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Luis P. Ferreira is the Sub-Director of the Master's Degree in Industrial Engineering at ISEP. He has a Ph.D. in Industrial Engineering and is the author of more than 50 papers in peer-reviewed journals (indexed on SCOPUS and SJR).
The structure of car seats is becoming increasingly complex, with mixing of wire conformation and plastic injection. The plastic over-molding process implies some labor, which can be reduced if novel solutions are applied in this manufacturing area. The handling of the wires used in car seats is the main problem identified in the process, wasting time both in the feeding and in the extraction of the molds used in the wire over-molding process. However, these machines are usually extremely compact and the free space around them is too short. In classic molding injection machines, there are just two half-molds, the female, and the male. In the over-molding process of wires used in car seats, three half-molds are used in order to increase the cycle time. Thus, to solve this problem, the classic robotic solutions are not appliable due to lack of space and elevated cost. This work describes the development of an automated solution able to handle the wires in both the feeding and the extracting phases of the production cycle, avoiding the traditional labor costs associated with this type of machine. Departing from an industrial need, the developed novel solution is described in detail and can be successfully adapted to other situations of low added-value products where it is needed to increase the productivity and competitiveness of the product. The system developed uses mechanical and pneumatic solutions which, combined, can be used to solve the identified problem, occupying a restricted space and requiring a small budget. This solution can be translated into guidelines that will allow the analysis of situations where the same system can be applied.
F. Silva; M. Soares; L. Ferreira; A. Alves; M. Brito; R. Campilho; V. Sousa. A Novel Automated System for the Handling of Car Seat Wires on Plastic Over-Injection Molding Machines. Machines 2021, 9, 141 .
AMA StyleF. Silva, M. Soares, L. Ferreira, A. Alves, M. Brito, R. Campilho, V. Sousa. A Novel Automated System for the Handling of Car Seat Wires on Plastic Over-Injection Molding Machines. Machines. 2021; 9 (8):141.
Chicago/Turabian StyleF. Silva; M. Soares; L. Ferreira; A. Alves; M. Brito; R. Campilho; V. Sousa. 2021. "A Novel Automated System for the Handling of Car Seat Wires on Plastic Over-Injection Molding Machines." Machines 9, no. 8: 141.
The purpose of the present study consists in the development of a conceptual model to optimize assignments between staff’s and workstations with manual assembly processes. This model is planned to satisfy customers’ needs without compromising workers’ health. The development of occupational risk measurement tools is urgent and essential to prevent health problems in work teams. Staff managers should establish appropriate assignments to the characteristics of available and existing resources to complete the tasks without compromising productivity, safety, and health. A life free of work-related musculoskeletal disorders can extend career length and the number of active workers. Therefore, industrial managers need to integrate knowledge from different scientific fields into their decision-making process. They need to identify, specify and focus their efforts on the changes that characterize their productive systems (e.g., layout, workload, cycle time, occupational diseases), and follow the evolution of demographic changes, in order to adjust, with greater celerity, their actions to different dynamic problems. Hence, the implementation of an instrument of measure can contribute to increasing the wellbeing of people at industrial workplaces. Consequently, workers’ health is less compromised over the span of an entire professional career.
Arminda Pata; José Carlos Sá; Francisco José Gomes da Silva; Olga Silva; Luís Barreto; Luís Pinto Ferreira. Conceptual Model of Production Engineers’ Actions to Monitor Workers’ Exposure to Occupational Risks. Recent Advances in Computational Mechanics and Simulations 2021, 79 -87.
AMA StyleArminda Pata, José Carlos Sá, Francisco José Gomes da Silva, Olga Silva, Luís Barreto, Luís Pinto Ferreira. Conceptual Model of Production Engineers’ Actions to Monitor Workers’ Exposure to Occupational Risks. Recent Advances in Computational Mechanics and Simulations. 2021; ():79-87.
Chicago/Turabian StyleArminda Pata; José Carlos Sá; Francisco José Gomes da Silva; Olga Silva; Luís Barreto; Luís Pinto Ferreira. 2021. "Conceptual Model of Production Engineers’ Actions to Monitor Workers’ Exposure to Occupational Risks." Recent Advances in Computational Mechanics and Simulations , no. : 79-87.
As a pillar of Industry 4.0, simulation embodies an extremely useful tool in the resolution of issues related to decision-making and the choice of strategies. Since these are problems which exist in the wine sector, the purpose of this work was to build a decision support tool based on system dynamics, which would encompass the main factors that influence the price of wine. Its main objective is to assist managers in the definition of the strategies which are best suited to the company’s mission. In order to build this tool, several interviews were conducted with various experts in the industry, thus gaining an insight into the factors which most influence the price of wine, both according to pertinent literature or according to these specialists.
Jéssica Sá; Luís Pinto Ferreira; Teresa Dieguez; José Carlos Sá; Francisco José Gomes da Silva. Industry 4.0 in the Wine Sector – Development of a Decision Support System Based on Simulation Models. Recent Advances in Computational Mechanics and Simulations 2021, 371 -384.
AMA StyleJéssica Sá, Luís Pinto Ferreira, Teresa Dieguez, José Carlos Sá, Francisco José Gomes da Silva. Industry 4.0 in the Wine Sector – Development of a Decision Support System Based on Simulation Models. Recent Advances in Computational Mechanics and Simulations. 2021; ():371-384.
Chicago/Turabian StyleJéssica Sá; Luís Pinto Ferreira; Teresa Dieguez; José Carlos Sá; Francisco José Gomes da Silva. 2021. "Industry 4.0 in the Wine Sector – Development of a Decision Support System Based on Simulation Models." Recent Advances in Computational Mechanics and Simulations , no. : 371-384.
The new digital era is highly transforming and influencing the hotel industry. Customer’ satisfaction impacts future business and customer networks emanate from digital platforms. Digital customer networks influence consumer perceptions, attitudes, and decisions to purchase. However, these digital customer networks are applicable as strategies to improve sales, reduce costs, and build loyal relationships through customers’ access, connection, engage and collaboration. The present research slicked to assess the influence of digital customer network strategy on hotel business. For this purpose, it has been conducted an exploratory study, through interviews, using remote videoconference, in July 2020 to near five General Manager of five different hotels based in Portugal. The study shows that nowadays the digital is effectively transforming the way stakeholders do business, innovate, work and cooperate. It also adds that in future this influence will be higher, which demands an accurate attention from the management and an incorporation of digital on hotel strategies. In fact, the study shows that digital marketing enhances customer service, it is cheaper and reaches the market and consumers more effectively. Social media promotes the hotel's image and brand, but it can also blacken it quickly. The SEO (Search Engine Optimization) strategy is impactful and if wisely managed, it can have a long-lasting impact with free-of-cost and an attractive website. The website helps the business to get to know about its customers and represents the major operations of the hotel.
Teresa Dieguez; Nguyen Thi Ly; Luis Pinto Ferreira; Francisco José Gomes da Silva. Digital Customer Network Strategy Influences on Hotel Business. Recent Advances in Computational Mechanics and Simulations 2021, 420 -431.
AMA StyleTeresa Dieguez, Nguyen Thi Ly, Luis Pinto Ferreira, Francisco José Gomes da Silva. Digital Customer Network Strategy Influences on Hotel Business. Recent Advances in Computational Mechanics and Simulations. 2021; ():420-431.
Chicago/Turabian StyleTeresa Dieguez; Nguyen Thi Ly; Luis Pinto Ferreira; Francisco José Gomes da Silva. 2021. "Digital Customer Network Strategy Influences on Hotel Business." Recent Advances in Computational Mechanics and Simulations , no. : 420-431.
The manual assembly processes and the dynamic industrial environment usually requires fast adjustments between work teams and workstations to accomplish customers’ needs. Sometimes, activities are scheduled without considering occupational health of work teams. Those occurrences can compromise work conditions and employee’s health. Thus, the specific objective of this study was to develop a mathematical programming model, to permit monitoring the exposure to occupational risks of workers teams. The mathematical model proposed was validated through solutions generated via the CPLEX® optimization software and OPL language, which was applied in an assembly line of bicycle handlebar where 6 employees produce 800 units per day. First, the results for the original scenario were generated considering the people all the time in the same workstation. The solution was achieved in 12 ms and provided as solution OF = 26153. Then, to allow a deeper perception about the importance of monitoring people exposure at the shop floor, limits of subjection were established. The assignments between work teams and workstations were generated considering those limits. An admissible solution OF = 17888 with the potential to ensure the same output of bicycle handlebar was found in 14 ms. It is expected that the balanced employees’ exposure to the work conditions may contribute to minimize occupational diseases, increase the active aging and ensure future healthy generations, in different manual assembly processes.
Arminda Pata; José Carlos Sá; Gilberto Santos; Francisco José Gomes da Silva; Luís Pinto Ferreira; Luís Barreto. Mathematical Model to Monitory Exposure of People to Occupational Risk in Manual Assembly Processes. Recent Advances in Computational Mechanics and Simulations 2021, 122 -134.
AMA StyleArminda Pata, José Carlos Sá, Gilberto Santos, Francisco José Gomes da Silva, Luís Pinto Ferreira, Luís Barreto. Mathematical Model to Monitory Exposure of People to Occupational Risk in Manual Assembly Processes. Recent Advances in Computational Mechanics and Simulations. 2021; ():122-134.
Chicago/Turabian StyleArminda Pata; José Carlos Sá; Gilberto Santos; Francisco José Gomes da Silva; Luís Pinto Ferreira; Luís Barreto. 2021. "Mathematical Model to Monitory Exposure of People to Occupational Risk in Manual Assembly Processes." Recent Advances in Computational Mechanics and Simulations , no. : 122-134.
The industry 4.0 revolution provides the machines with a sensory and communicational capacity, which allows them to monitor and collect large amounts of information. This kind of data have an impact on planning, maintenance, and management of production, enabling real time reaction, efficiency increase, and the development of predictive and process improvement models. The most recent machines are prepared to communicate with the existing monitoring systems, however, many (around 60%) do not. The objective of this work is to present the proposal of a system for remote monitoring of equipment in real time that meets the requirements of low cost, simplicity, and flexibility. The system monitors the equipment in a simple and agile way, regardless of its sophistication, installation constraints and company resources. A prototype of a system was developed and tested both laboratory conditions and a productive environment. The proposed architecture of the system comprises of a sensor that transmits the machine’s signal wirelessly to a gateway which is responsible of collecting all surrounding signals and send it to the cloud. During the testing and assessment of the tools, the results validated the developed prototype. As main result, the proposed solution offers to the industrial market a new low-cost monitoring system based in mature and tested technology laid upon flexible and scalable solutions. Industry 4.0, Machine Monitoring, Beacon, Bluetooth BLE, Remote Monitoring, Low Cost, SME’s, b-Remote
Joao Pedro Nieves DA Costa; Paulo Avila; Joao Bastos; Luis Pinto Ferreira. A NEW SIMPLE, FLEXIBLE AND LOW-COST MACHINE MONITORING SYSTEM. DYNA 2021, DYNA-ACELE, [ 7 pp.] -[ 7 pp.].
AMA StyleJoao Pedro Nieves DA Costa, Paulo Avila, Joao Bastos, Luis Pinto Ferreira. A NEW SIMPLE, FLEXIBLE AND LOW-COST MACHINE MONITORING SYSTEM. DYNA. 2021; DYNA-ACELE ():[ 7 pp.]-[ 7 pp.].
Chicago/Turabian StyleJoao Pedro Nieves DA Costa; Paulo Avila; Joao Bastos; Luis Pinto Ferreira. 2021. "A NEW SIMPLE, FLEXIBLE AND LOW-COST MACHINE MONITORING SYSTEM." DYNA DYNA-ACELE, no. : [ 7 pp.]-[ 7 pp.].
Purpose: This study was carried out in a cork company and its purpose was to observe and analyze the practices and methods used during the tools/series change moments and to propose improvements and alternatives to these same procedures so that the time needed to carry out the setup is reduced by 15% in both lines. Methodology/Approach:The methodology included the following phases: 1st - historical data collection and setup video recording, 2nd - footage analysis and conduction of informal interviews with employees, 3rd - flow, Gantt, and spaghetti charts creation and making of an action plan based on the waste and improvement opportunities identified in video analysis, 4th - validation with the line workers of the new operating mode created with the Single Minute Exchange of Dies (SMED) tool and communication to the Maintenance department about their role in this project, 5th - making and placement of plasticized cards on the cutting lines to ensure that new operating mode is followed and carrying out the actions identified in the action plan. Findings: Throughout this project using observations, video recording and its subsequent analysis, as well as interviews to the workers operating in the line, it was found the existence of several actions carried out by them during the setups which did not add value to the product, lack of adequate tools for the work to be performed and lack of work tools in general Research Limitation/implication: The study was limited by the lines and products under study and by the duration of the curricular internship, which was about five months. Originality/Value of paper: The article demonstrates the added value in terms of product quality and production output rate that SMED methodology can bring to companies that adopt the lean philosophy and in particular this continuous improvement tool.
Alexandre Silva; José C. Sá; Gilberto Santos; Francisco J.G. Silva; Luís P. Ferreira; Maria T. Pereira. A Comparison of the Application of the SMED Methodology in Two Different Cutting Lines. Quality Innovation Prosperity 2021, 25, 124 -149.
AMA StyleAlexandre Silva, José C. Sá, Gilberto Santos, Francisco J.G. Silva, Luís P. Ferreira, Maria T. Pereira. A Comparison of the Application of the SMED Methodology in Two Different Cutting Lines. Quality Innovation Prosperity. 2021; 25 (1):124-149.
Chicago/Turabian StyleAlexandre Silva; José C. Sá; Gilberto Santos; Francisco J.G. Silva; Luís P. Ferreira; Maria T. Pereira. 2021. "A Comparison of the Application of the SMED Methodology in Two Different Cutting Lines." Quality Innovation Prosperity 25, no. 1: 124-149.
To remain competitive, companies must continuously improve the processes at hand, be they administrative, production, or logistics. The objective of the study described in this paper was to develop a decision-making tool based on a simulation model to support the production of knits and damask fabrics. The tool was used to test different control strategies for material flow, from the raw material warehouse to the finished product warehouse, and thus can also be used to evaluate the impacts of these strategies on the productivity. The data upon which the decision support tool was built were collected from five sectors of the plant: the raw material warehouse, knit production, damask production, finishing work, and the finished product warehouse. The decision support tool met the objectives of the project, with all five strategies developed showing positive results. Knit and damask production rates increased by up to 8% and 44%, respectively, and a reduction of 75% was observed in the waiting time on the point of entry to the finishing work area, compared to the company’s existing system.
Vítor Silva; Luís Ferreira; Francisco Silva; Benny Tjahjono; Paulo Ávila. Simulation-Based Decision Support System to Improve Material Flow of a Textile Company. Sustainability 2021, 13, 2947 .
AMA StyleVítor Silva, Luís Ferreira, Francisco Silva, Benny Tjahjono, Paulo Ávila. Simulation-Based Decision Support System to Improve Material Flow of a Textile Company. Sustainability. 2021; 13 (5):2947.
Chicago/Turabian StyleVítor Silva; Luís Ferreira; Francisco Silva; Benny Tjahjono; Paulo Ávila. 2021. "Simulation-Based Decision Support System to Improve Material Flow of a Textile Company." Sustainability 13, no. 5: 2947.
PurposeThis study aims to improve the reception and positioning of materials in the warehouse, as well as the internal logistics of a bus manufacturing company by acting upon the processes of supply line management.Design/methodology/approachThis study is based on the action research methodology which, through a practical approach, intends to generate transferrable knowledge to other organizations whose situations are similar to that of this study. The practical actions and the knowledge acquired co-create the changes needed for the improvement processes.FindingsThrough these improvements, it is possible to standardize supply and eliminate the retention of picking carts on the line, simplify the management of materials provided in supermarket boxes, improve the control of materials and facilitate the process of picking and materials storage. A kanban card-based supply system was also expanded to the bus assembly line, allowing more control over valuable materials.Originality/valueThis study has demonstrated how the implementation of lean techniques on a bus assembly line can lead to increased consistency of supply to the line and improved working conditions, both in the production and warehouse areas. Furthermore, it has set a new standard of the internal logistics processes and the inclusion of process recording in the working instructions.
José Mourato; Luís Pinto Ferreira; José Carlos Sá; Francisco J.G. Silva; Teresa Dieguez; Benny Tjahjono. Improving internal logistics of a bus manufacturing using the lean techniques. International Journal of Productivity and Performance Management 2020, ahead-of-p, 1 .
AMA StyleJosé Mourato, Luís Pinto Ferreira, José Carlos Sá, Francisco J.G. Silva, Teresa Dieguez, Benny Tjahjono. Improving internal logistics of a bus manufacturing using the lean techniques. International Journal of Productivity and Performance Management. 2020; ahead-of-p (ahead-of-p):1.
Chicago/Turabian StyleJosé Mourato; Luís Pinto Ferreira; José Carlos Sá; Francisco J.G. Silva; Teresa Dieguez; Benny Tjahjono. 2020. "Improving internal logistics of a bus manufacturing using the lean techniques." International Journal of Productivity and Performance Management ahead-of-p, no. ahead-of-p: 1.
The main purpose of this paper was to introduce procedural changes based on a type of human resources management tool using Lean Leadership (LL). We sought to determine which Lean Tools (LTs) are able to promote a rapid impact on a company; namely, we aimed to determine which LTs are able to facilitate fast and positive results for companies after their implementation, thus allowing for quick wins. This study was conducted at a medium-sized Portuguese company in the metalworking sector. Results were assessed from two surveys (involving 17 people) regarding perceptions of employee awareness in the machining area for Quality, Maintenance/Equipment, Process/Products, Leadership/Management by Objectives, and Trust and Training. The surveys were conducted at the beginning of the study and at the end of a quarterly period. LTs were used over a period of three months, thus enabling changes to the company’s manufacturing processes which could lead to improved organization, orientation, consistency and viability. Three months were considered an adequate time period to measure whether the tools were effective in the production of quick wins or not. LL allowed for greater awareness of the importance of LTs, the most important feature of which is the aggregation of all of the employees’ energies, which culminates in better operational efficiency and an increase in the employees’ overall positive perceptions of their company’s principles and mindset. The introduction of LL, as well as the implementation of 10 LTs, which are considered to be Quick-Win Tools, enabled employees to improve their perceptions of their company by 6.1%. Lean tools can be implemented quickly and are easily understood by their intended users. These benefits provide additional motivation for their use and for the achievement of highly satisfactory operating results across production areas. This study aims to identify which lean tools allow companies to obtain benefits/gains quickly. This outcome is the main contribution of this study to the scientific community and to companies. A Quick Win means a rapid improvement in a short period of time. As such, lean tools that provide Quick Wins also contribute to economic development. Due to the restricted time period imposed by the main purpose of this study, statistical analysis of the results was unfeasible.
Jorge Rodrigues; José Carlos Sá; Francisco J. G. Silva; Luís Pinto Ferreira; Genett Jimenez; Gilberto Santos. A Rapid Improvement Process through “Quick-Win” Lean Tools: A Case Study. Systems 2020, 8, 55 .
AMA StyleJorge Rodrigues, José Carlos Sá, Francisco J. G. Silva, Luís Pinto Ferreira, Genett Jimenez, Gilberto Santos. A Rapid Improvement Process through “Quick-Win” Lean Tools: A Case Study. Systems. 2020; 8 (4):55.
Chicago/Turabian StyleJorge Rodrigues; José Carlos Sá; Francisco J. G. Silva; Luís Pinto Ferreira; Genett Jimenez; Gilberto Santos. 2020. "A Rapid Improvement Process through “Quick-Win” Lean Tools: A Case Study." Systems 8, no. 4: 55.
The tradition of wine production and consumption in Portugal is widely spread since the country presents climatic and territorial characteristics which have made wine-making an important strategic sector. In addition, the essence of the wine industry has led to greater tourism, thus enhancing the growth of enotourism. Given the importance of the wine production sector in the national context, as well as the potential of Industry 4.0 to stimulate improvements both in efficiency and competitiveness, the objective of this work is to achieve a better understanding of how Industry 4.0 and its key features, namely simulation, can influence wine production and enotourism.
Jéssica Sá; Luís Pinto Ferreira; Teresa Dieguez; José Carlos Sá; F. J. G. Silva. Role of the Industry 4.0 in the Wine Production and Enotourism Sectors. Blockchain Technology and Innovations in Business Processes 2020, 171 -180.
AMA StyleJéssica Sá, Luís Pinto Ferreira, Teresa Dieguez, José Carlos Sá, F. J. G. Silva. Role of the Industry 4.0 in the Wine Production and Enotourism Sectors. Blockchain Technology and Innovations in Business Processes. 2020; ():171-180.
Chicago/Turabian StyleJéssica Sá; Luís Pinto Ferreira; Teresa Dieguez; José Carlos Sá; F. J. G. Silva. 2020. "Role of the Industry 4.0 in the Wine Production and Enotourism Sectors." Blockchain Technology and Innovations in Business Processes , no. : 171-180.
Machining processes remain an unavoidable technique in the production of high-precision parts. Tool behavior is of the utmost importance in machining productivity and costs. Tool performance can be assessed by the roughness left on the machined surfaces, as well as of the forces developed during the process. There are various techniques to determine these cutting forces, such as cutting force prediction or measurement, using dynamometers and other sensor systems. This technique has often been used by numerous researchers in this area. This paper aims to give a review of the different techniques and devices for measuring the forces developed for machining processes, allowing a quick perception of the advantages and limitations of each technique, through the literature research carried out, using recently published works.
Vitor F. C. Sousa; Francisco J. G. Silva; José S. Fecheira; Hernâni M. Lopes; Rui Pedro Martinho; Rafaela B. Casais; Luís Pinto Ferreira. Cutting Forces Assessment in CNC Machining Processes: A Critical Review. Sensors 2020, 20, 4536 .
AMA StyleVitor F. C. Sousa, Francisco J. G. Silva, José S. Fecheira, Hernâni M. Lopes, Rui Pedro Martinho, Rafaela B. Casais, Luís Pinto Ferreira. Cutting Forces Assessment in CNC Machining Processes: A Critical Review. Sensors. 2020; 20 (16):4536.
Chicago/Turabian StyleVitor F. C. Sousa; Francisco J. G. Silva; José S. Fecheira; Hernâni M. Lopes; Rui Pedro Martinho; Rafaela B. Casais; Luís Pinto Ferreira. 2020. "Cutting Forces Assessment in CNC Machining Processes: A Critical Review." Sensors 20, no. 16: 4536.
Additive manufacturing (AM) can be seen as a disruptive process that builds complex components layer upon layer. Two of its distinct technologies are Selective Laser Melting (SLM) and Electron Beam Melting (EBM), which are powder bed fusion processes that create metallic parts with the aid of a beam source. One of the most studied and manufactured superalloys in metal AM is the Ti–6Al–4V, which can be applied in the aerospace field due to its low density and high melting point, and in the biomedical area owing to its high corrosion resistance and excellent biocompatibility when in contact with tissues or bones of the human body. The research novelty of this work is the aggregation of all kinds of data from the last 20 years of investigation about Ti–6Al–4V parts manufactured via SLM and EBM, namely information related to residual stresses (RS), as well as the influence played by different heat treatments in reducing porosity and increasing mechanical properties. Throughout the report, it can be seen that the expected microstructure of the Ti–6Al–4V alloy is different in both manufacturing processes, mainly due to the distinct cooling rates. However, heat treatments can modify the microstructure, reduce RS, and increase the ductility, fatigue life, and hardness of the components. Furthermore, distinct post-treatments can induce compressive RS on the part’s surface, consequently enhancing the fatigue life.
Óscar Teixeira; Francisco J. G. Silva; Luís P. Ferreira; Eleonora Atzeni. A Review of Heat Treatments on Improving the Quality and Residual Stresses of the Ti–6Al–4V Parts Produced by Additive Manufacturing. Metals 2020, 10, 1006 .
AMA StyleÓscar Teixeira, Francisco J. G. Silva, Luís P. Ferreira, Eleonora Atzeni. A Review of Heat Treatments on Improving the Quality and Residual Stresses of the Ti–6Al–4V Parts Produced by Additive Manufacturing. Metals. 2020; 10 (8):1006.
Chicago/Turabian StyleÓscar Teixeira; Francisco J. G. Silva; Luís P. Ferreira; Eleonora Atzeni. 2020. "A Review of Heat Treatments on Improving the Quality and Residual Stresses of the Ti–6Al–4V Parts Produced by Additive Manufacturing." Metals 10, no. 8: 1006.
Paper aims POLCA is a production control system that forwards to gateway manufacturing cells jobs that arrive to a manufacturing system. However, Workload Control literature shows benefits from using a centralized release pre-shop pool. Thus, the paper aims at investigating the performance impact of incorporating centralized job release into POLCA, in high-variety make-to-order production. Originality This has not been investigated before. Research method Simulation was used for experimentation. Main findings In the case of the general flow shop, a manufacturing system configuration aligned with many real-world production systems, the investigation shows that adding centralized job release to the POLCA system, together with job release based on job workload, leads to a markedly improvement of job delivery performance. Implications for theory and practice The results show theoretical and practical relevance of applying central job release to POLCA system, in high-variety production, due to its markedly positive impact on delivery performance.
Sílvio Carmo-Silva; Nuno Fernandes; Matthias Thürer; Luís Pinto Ferreira. Extending the POLCA production control system with centralized job release. Production 2020, 30, 1 .
AMA StyleSílvio Carmo-Silva, Nuno Fernandes, Matthias Thürer, Luís Pinto Ferreira. Extending the POLCA production control system with centralized job release. Production. 2020; 30 ():1.
Chicago/Turabian StyleSílvio Carmo-Silva; Nuno Fernandes; Matthias Thürer; Luís Pinto Ferreira. 2020. "Extending the POLCA production control system with centralized job release." Production 30, no. : 1.
POLCA (Paired-cell Overlapping Loops of Cards with Authorization) is a production control system specifically designed for low-volume, high-mix and custom-engineered products. It is a visual control system that manages the flow of jobs though the shop floor by making use of overlapping loops of cards between pairs of successive manufacturing cells. These overlapping loops of cards realize a decentralized decision-making structure for job release. This means that jobs do not await release in a centralized pre-shop pool. Rather jobs are immediately forwarded to a gateway manufacturing cells at their shop arrival, where they wait in release lists for available POLCA cards. However, the Workload Control literature has shown that using a centralized pre-shop pool provides important benefits. Therefore, this paper investigates the impact of centralized job release on POLCA performance. Using simulation, we demonstrate that centralized job release outperforms decentralised release if the right card acquisition rule for job release is used. This has important implications for both research and practice calling for more research on POLCA systems.
Nuno O. Fernandes; Matthias Thürer; Luís Pinto Ferreira; S. Carmo-Silva. POLCA: Centralised vs. Decentralised Job Release. IFAC-PapersOnLine 2019, 52, 1427 -1431.
AMA StyleNuno O. Fernandes, Matthias Thürer, Luís Pinto Ferreira, S. Carmo-Silva. POLCA: Centralised vs. Decentralised Job Release. IFAC-PapersOnLine. 2019; 52 (13):1427-1431.
Chicago/Turabian StyleNuno O. Fernandes; Matthias Thürer; Luís Pinto Ferreira; S. Carmo-Silva. 2019. "POLCA: Centralised vs. Decentralised Job Release." IFAC-PapersOnLine 52, no. 13: 1427-1431.
Purpose: This study comprised two main goals. The first goal demonstrates how LT (Lean Tools) allows the highest impact during the implementation phase.The second goal consisted of introducing procedure changes based on the Management of Human Resources through Lean Leadership tool. The target for these two objectives is to achieve an increase of 5% in machine occupancy rate and a reduction of 10% regarding the costs of defective products per hour.Methodology/Approach: The research methodology is a Action-Research/Research-Action developed by Professor Kurt Lewin of MIT that goes through cycles of five stages: Diagnosis; Planning; Implementation; Evaluation, Conclusions.Findings: Regarding the two objectives above mentioned, it was observed an increase of 8.5% in machine occupancy rate and a reduction of 27.9% regarding the costs per hour of defective products. It was created an additional motivation in the employees and very satisfying results in every production.Research Limitation/implication: The study is limited to a Portuguese Small and Medium-sized Enterprise (SME) in the metalworking sector.Originality/Value of paper: Lean tools can be rapidly and easily implemented and quickly understood by the workers. With that implementation, the occupation of the machines has increased and the defects and their costs have decreased, so the added value grows.
Jorge Rodrigues; José C.V. De Sá; Luís P. Ferreira; Francisco J.G. Silva; Gilberto Santos. Lean Management “Quick-Wins”: Results of Implementation. A Case Study. Quality Innovation Prosperity 2019, 23, 3 -21.
AMA StyleJorge Rodrigues, José C.V. De Sá, Luís P. Ferreira, Francisco J.G. Silva, Gilberto Santos. Lean Management “Quick-Wins”: Results of Implementation. A Case Study. Quality Innovation Prosperity. 2019; 23 (3):3-21.
Chicago/Turabian StyleJorge Rodrigues; José C.V. De Sá; Luís P. Ferreira; Francisco J.G. Silva; Gilberto Santos. 2019. "Lean Management “Quick-Wins”: Results of Implementation. A Case Study." Quality Innovation Prosperity 23, no. 3: 3-21.
The purpose of this paper is to examine settings for the Open Innovation Arena. In greater depth, this paper aims to analyse and reveal which factors influence the formation of an appropriate arena for doing open innovation and furthermore to prescribe how a firm can create an effective arena to gain access to external knowledge. This paper presents a review on open innovation literature with the purpose of examining the current understanding of factors influencing a firm's capacity to embrace and practice open innovation as well as understanding what is critical when fitting outside systems. It presents the results of a survey conducted among 25 researchers from INESC TEC, the Portuguese Institute for Systems and Computer Engineering, Technology, and Science. The study concludes that conditions, namely culture, leadership and strategy, are the main drivers to an open innovation arena, highlighting culture as the most important one. Highlights Nowadays, the goal of each organisation is to conquest competition and to win new customers. Firms must create physical locations where collaboration is encouraged. Companies must be able to diagnose, measure and question its innovation performance and potential. The Innovation Scoring System impacts a firm's capacity to embrace and practice open innovation; Impacting factors on Innovation Scoring System: Conditions, Resources, Processes and Results. Open Innovation is a powerful tool for the sustainable development of the companies.
Ashwin Sivam; Teresa Dieguez; Luís Pinto Ferreira; F.J.G. Silva. Key settings for successful Open Innovation Arena. Journal of Computational Design and Engineering 2019, 6, 507 -515.
AMA StyleAshwin Sivam, Teresa Dieguez, Luís Pinto Ferreira, F.J.G. Silva. Key settings for successful Open Innovation Arena. Journal of Computational Design and Engineering. 2019; 6 (4):507-515.
Chicago/Turabian StyleAshwin Sivam; Teresa Dieguez; Luís Pinto Ferreira; F.J.G. Silva. 2019. "Key settings for successful Open Innovation Arena." Journal of Computational Design and Engineering 6, no. 4: 507-515.
This article presents the analysis of a process by using four distinct approaches, each of them recurring to different Lean tools in order to get a detailed and multidimensional overview of the process. The primary objective of this study was to identify activities which add value in the order fulfilment process of a metalwork company. In this context, one also addressed issues such as waste, problems and their causes, in order to define intervention priorities and select actions capable to enhance the performance and efficiency of the process. The secondary objective was to evaluate and compare the results of the analysis made through different mapping techniques. From this study results the proposal of a tool to identify perceived micro-inefficiencies, as well as the impact of these on the production sub-process. Designated as Perceived Waste Mapping (PWM), this method allowed one to estimate that the ratio between the value-added hours and the total number of work hours at the company will be approximately 30%, far from the figure of 84% registered in the existing time and production records.
José António Dias; Luís Pinto Ferreira; Maria A. Gonçalves; F.J.G. Silva; Enrique Ares. Analysis Of An Order Fulfilment Process At A Metalwork Company Using Different Lean Methodologies. Procedia Manufacturing 2019, 41, 399 -406.
AMA StyleJosé António Dias, Luís Pinto Ferreira, Maria A. Gonçalves, F.J.G. Silva, Enrique Ares. Analysis Of An Order Fulfilment Process At A Metalwork Company Using Different Lean Methodologies. Procedia Manufacturing. 2019; 41 ():399-406.
Chicago/Turabian StyleJosé António Dias; Luís Pinto Ferreira; Maria A. Gonçalves; F.J.G. Silva; Enrique Ares. 2019. "Analysis Of An Order Fulfilment Process At A Metalwork Company Using Different Lean Methodologies." Procedia Manufacturing 41, no. : 399-406.
This article is the result of a work developed in plastic products manufacturing plant. The main objective of this project was the implementation of Lean tools in the two main products of this company, the wheel covers and the front bumpers, in order to obtain a reduction in the cycle times, an increased output in the production lines and a reduction in the complains associated to these products. The investigation methodology used was Action Research. This investigation began with the bibliographic review of Lean and the main Lean tools used in this organizational model such as 5S, Visual Management, SMED, Standard Work and OEE. The diagnose was initiated through a detailed description and analysis of the several processes associated with each product. For that, several parameters were analyzed (non-conformities, complains, delivery delays and calculating the OEE values) and the improvement opportunities were identified. For each identified aspect, improvements were proposed trough Lean tools and methodologies such as 5S, Visual Management, SMED and Standard Work. Some improvements also applied to the process had no relation to Lean tools and methodologies. The implementation of the suggested improvement proposals had quite positive impacts such as the 70% reduction of transportation times in the painting production line and the growth of the OEE index in 18% in the injection process, 16% in the painting production line of the Wheel Covers and 17% in the painting production line of the Front Bumpers.
P. Ribeiro; J.C. Sá; Luís Pinto Ferreira; F.J.G. Silva; M.T. Pereira; G. Santos. The Impact of the Application of Lean Tools for Improvement of Process in a Plastic Company: a case study. Procedia Manufacturing 2019, 38, 765 -775.
AMA StyleP. Ribeiro, J.C. Sá, Luís Pinto Ferreira, F.J.G. Silva, M.T. Pereira, G. Santos. The Impact of the Application of Lean Tools for Improvement of Process in a Plastic Company: a case study. Procedia Manufacturing. 2019; 38 ():765-775.
Chicago/Turabian StyleP. Ribeiro; J.C. Sá; Luís Pinto Ferreira; F.J.G. Silva; M.T. Pereira; G. Santos. 2019. "The Impact of the Application of Lean Tools for Improvement of Process in a Plastic Company: a case study." Procedia Manufacturing 38, no. : 765-775.
In a market as competitive as the automotive industry, it becomes increasingly important for the organizations to adopt a culture of continuous improvement, which should cross-over all stakeholders in the organization. The continuous improvement of the processes, the increase in efficiency, and the elimination of waste, leads to a considerable increase in market competitiveness, not only economically, but also technologically. The focus of this work was the optimization of a production line, with the main goal being the increase of its productive capacity, so that it can comply with customer’s requests. Thus, it was defined as a goal of this project: to increase the productive capacity to 1800 parts/day. The methodologies used were based on several continuous improvements and lean techniques, such as line balancing, standard work, visual management and 5S. The work developed allowed an increase of 37% of the production line capacity and an increase of 22% in the OEE of the production line.
P. Dias; F.J.G. Silva; R.D.S.G. Campilho; L.P. Ferreira; T. Santos. Analysis and Improvement of an Assembly Line in the Automotive Industry. Procedia Manufacturing 2019, 38, 1444 -1452.
AMA StyleP. Dias, F.J.G. Silva, R.D.S.G. Campilho, L.P. Ferreira, T. Santos. Analysis and Improvement of an Assembly Line in the Automotive Industry. Procedia Manufacturing. 2019; 38 ():1444-1452.
Chicago/Turabian StyleP. Dias; F.J.G. Silva; R.D.S.G. Campilho; L.P. Ferreira; T. Santos. 2019. "Analysis and Improvement of an Assembly Line in the Automotive Industry." Procedia Manufacturing 38, no. : 1444-1452.