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Prof. Dr. A.G. González
University of Extremadura, Badajoz 06006,Spain

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0 Ecodesign
0 Energy Efficiency
0 Sustainability
0 Energy Efficiency in Building
0 Healthcare engineering

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Journal article
Published: 22 May 2020 in Applied Ergonomics
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Laparoscopic surgery techniques are customarily used in non-invasive procedures. That said traditional surgical instruments and devices used by surgeons suffer from certain ergonomic deficiencies that may lead to physical complaints in upper limbs and back and general discomfort that may, in turn, affect the surgeon’s skills during surgery. A novel design of the laparoscopic gripper handle is presented and compared with one of the most used instruments in this field in an attempt to overcome this problem. The assessment of the ergonomic feature of the novel design was performed by using time–frequency analysis of the surface electromyography (sEMG) signal during dynamic activities. Singular Spectrum Analysis (SSA) was used to decompose the sEMG signal and extract the median frequency of each muscle to assess muscle fatigue. The results reveal that using the proposed ergonomic grip reduces the mean values of the muscle activity during each of the proposed tasks. The novel design also improves the ease of use in laparoscopic surgery as it minimises high-pressure contact areas, reduces large amplitude movements and promotes a neutral position of the hand, wrist and forearm. Furthermore, the SSA method for time–frequency analysis provides a powerful tool to analyse a prescribed activity in ergonomic terms. The proposed methodology to assess muscle activity during surgery activities may be useful in the selection of surgical instruments when programming extended procedures, as it provides an additional selection criterion based on the surgeon’s biomechanics and the proposed activity.

ACS Style

A.G. González; J. Barrios-Muriel; F. Romero-Sánchez; D.R. Salgado; F.J. Alonso. Ergonomic assessment of a new hand tool design for laparoscopic surgery based on surgeons’ muscular activity. Applied Ergonomics 2020, 88, 103161 .

AMA Style

A.G. González, J. Barrios-Muriel, F. Romero-Sánchez, D.R. Salgado, F.J. Alonso. Ergonomic assessment of a new hand tool design for laparoscopic surgery based on surgeons’ muscular activity. Applied Ergonomics. 2020; 88 ():103161.

Chicago/Turabian Style

A.G. González; J. Barrios-Muriel; F. Romero-Sánchez; D.R. Salgado; F.J. Alonso. 2020. "Ergonomic assessment of a new hand tool design for laparoscopic surgery based on surgeons’ muscular activity." Applied Ergonomics 88, no. : 103161.

Journal article
Published: 24 February 2020 in Applied Sciences
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Previous studies have shown that the handle design of laparoscopic instruments is crucial to surgical performance and surgeon’s ergonomics. In this study, four different sizes of an ergonomic laparoscopic handle design were tested in a blind and randomized fashion with twelve surgeons. They performed three laparoscopic tasks in order to analyze the influence of handle size. Execution time, wrist posture, and finger and palm pressure were evaluated during the performance of each task. The results show a significant reduction in the time required to complete the eye-manual coordination task using the appropriate handle. The incorrectly sized handle resulted in a rise in palm pressure and a reduction in the force exerted by the thumb during the transfer task. In the hand-eye coordination task, the use of the right handle size led to an increase in middle finger pressure. In general, surgeons had an ergonomically adequate wrist flexion in all tasks and an acceptable radio-ulnar deviation during the transfer task using the ergonomic instrument handle. Surgeons found it comfortable the use of the ergonomic handle. Therefore, the use of an appropriately sized instrument handle allows surgeons to improve ergonomics and surgical performance during the laparoscopic practice.

ACS Style

Juan A. Sánchez-Margallo; Alfonso González González; Lorenzo García Moruno; J. Carlos Gómez-Blanco; J. Blas Pagador; Francisco M. Sánchez-Margallo; José B. Pagador Carrasco. Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery. Applied Sciences 2020, 10, 1526 .

AMA Style

Juan A. Sánchez-Margallo, Alfonso González González, Lorenzo García Moruno, J. Carlos Gómez-Blanco, J. Blas Pagador, Francisco M. Sánchez-Margallo, José B. Pagador Carrasco. Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery. Applied Sciences. 2020; 10 (4):1526.

Chicago/Turabian Style

Juan A. Sánchez-Margallo; Alfonso González González; Lorenzo García Moruno; J. Carlos Gómez-Blanco; J. Blas Pagador; Francisco M. Sánchez-Margallo; José B. Pagador Carrasco. 2020. "Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery." Applied Sciences 10, no. 4: 1526.

Journal article
Published: 01 January 2019 in Procedia Manufacturing
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Tools to encourage active participation and interaction between students and teachers through personal response systems have been incorporated into the educational arena in recent years. In this sense, this paper shows a teaching methodology used at the University of Extremadura to assess students’ competencies in real time in the area of Manufacturing Engineering, using a teaching tool called Socrative. The methodology was applied in the technical subjects and involved students from the School of Industrial Engineering (Badajoz) and the University Centre of Merida (UCM). The primary objective was to assess the specific competencies in the area of Manufacturing Engineering and ascertain the most relevant cross-sectional competencies students need to acquire in these subjects, which must also be assessed. The results reveal that students improve their skills and abilities, as well as their interest in the essential contents of the curriculum and show great satisfaction with the introduction of this type of activity as a complement to the classes. Finally, it should be pointed out that these methodologies, although they have resulted in improved results in the teaching-learning process in the subjects related with manufacturing engineering, require a considerable effort of coordination on the part of teachers.

ACS Style

A.G. González; D.R. Salgado; Justo García Sanz-Calcedo; C. Cruz García; J. Barrios Muriel; O. López Pérez; F.J. Álvarez García. A teaching methodology for the real-time assessment of students’ competencies related to manufacturing subjects using technology based on electronic devices. Procedia Manufacturing 2019, 41, 579 -586.

AMA Style

A.G. González, D.R. Salgado, Justo García Sanz-Calcedo, C. Cruz García, J. Barrios Muriel, O. López Pérez, F.J. Álvarez García. A teaching methodology for the real-time assessment of students’ competencies related to manufacturing subjects using technology based on electronic devices. Procedia Manufacturing. 2019; 41 ():579-586.

Chicago/Turabian Style

A.G. González; D.R. Salgado; Justo García Sanz-Calcedo; C. Cruz García; J. Barrios Muriel; O. López Pérez; F.J. Álvarez García. 2019. "A teaching methodology for the real-time assessment of students’ competencies related to manufacturing subjects using technology based on electronic devices." Procedia Manufacturing 41, no. : 579-586.

Journal article
Published: 30 August 2018 in Energies
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The use of benchmarking in the management of healthcare facilities enables immediate comparison between hospitals. Benchmarking allows ascertaining their expected energy consumption and estimating the possible savings margin. In the 2005–2015 period, 90 EU Eco-Audits of 23 public hospitals in Germany were studied to analyze the energy consumption related with weather conditions, built surface area, gross domestic product (GDP), geographic location (GL), bed numbers, and employee numbers. The results reveal that the average annual energy consumption of a hospital under normal conditions, both climatic and operational, is 0.27 MWh/m2, 14.37 MWh/worker, and 23.41 MWh/bed. The indicator dependent on the number of beds proved to be the most suitable as a reference to quantify the energy consumption of a hospital.

ACS Style

Alfonso González González; Justo García-Sanz-Calcedo; David Rodríguez Salgado. Evaluation of Energy Consumption in German Hospitals: Benchmarking in the Public Sector. Energies 2018, 11, 2279 .

AMA Style

Alfonso González González, Justo García-Sanz-Calcedo, David Rodríguez Salgado. Evaluation of Energy Consumption in German Hospitals: Benchmarking in the Public Sector. Energies. 2018; 11 (9):2279.

Chicago/Turabian Style

Alfonso González González; Justo García-Sanz-Calcedo; David Rodríguez Salgado. 2018. "Evaluation of Energy Consumption in German Hospitals: Benchmarking in the Public Sector." Energies 11, no. 9: 2279.

Journal article
Published: 22 July 2018 in Applied Sciences
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A study was carried out with 135 surgeons to obtain a surgical laparoscopic grasper handle design that adapts to the size of each surgeon’s hand, in a functionally appropriate way, and has the sufficient ergonomics to avoid generating the problems detected nowadays. The main conclusion of the work is the practical 3D parametric design obtained for a laparoscopic surgical graspers handle that is scalable to fit each particular surgeon's hand size. In addition, it has been possible to determine that the anthropometric measure of the surgeon's hand defined as Palm Length Measured (PLM) allows the design of the 3D parametric model of the surgical handle to be conveniently scaled. The results show that both additive manufacturing and the application of ergonomics criterion provide an efficient method for the custom design and manufacture of this type of specialised tool, with potential application in other sectors.

ACS Style

Alfonso González González; David Rodríguez Salgado; Lorenzo García Moruno; Alonso Sánchez Ríos. An Ergonomic Customized-Tool Handle Design for Precision Tools using Additive Manufacturing: A Case Study. Applied Sciences 2018, 8, 1200 .

AMA Style

Alfonso González González, David Rodríguez Salgado, Lorenzo García Moruno, Alonso Sánchez Ríos. An Ergonomic Customized-Tool Handle Design for Precision Tools using Additive Manufacturing: A Case Study. Applied Sciences. 2018; 8 (7):1200.

Chicago/Turabian Style

Alfonso González González; David Rodríguez Salgado; Lorenzo García Moruno; Alonso Sánchez Ríos. 2018. "An Ergonomic Customized-Tool Handle Design for Precision Tools using Additive Manufacturing: A Case Study." Applied Sciences 8, no. 7: 1200.

Journal article
Published: 23 March 2018 in Sustainability
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A hospital’s water installations are critical for its function, but the environmental cost is high. This study quantifies the mean potable cold water consumption (PCWC) in 19 hospitals belonging to the German Public Health System. The hospital floor area ranges from 3000 to 151,000 m2 and the number of beds from 45 to 1003 beds. To this end, 60 Eco-Management and Audit Scheme statements were analyzed corresponding to the period 2005–2015 in accordance with their geographic location, heating-degree-days per year, cold-degree-days per year, hospital category depending on the number of beds, floor area, and number of workers. It was found that PCWC is greater in hospitals located in areas with greater heating-degree-days per year. The potential mean annual savings estimated were 8,600,000 m3 of water equivalent to 15,000,000 euros, 4000 MWh energy, and 30,000 tons of CO2 emissions. It was concluded that, to determine the mean annual water consumption, it is preferable to use the number of beds as reference indicator, and the value of the consumption as reference indicator was proposed as 103 m3 per bed per year.

ACS Style

Alfonso González González; Justo García-Sanz-Calcedo; David Rodríguez Salgado. Quantitative Determination of Potable Cold Water Consumption in German Hospitals. Sustainability 2018, 10, 932 .

AMA Style

Alfonso González González, Justo García-Sanz-Calcedo, David Rodríguez Salgado. Quantitative Determination of Potable Cold Water Consumption in German Hospitals. Sustainability. 2018; 10 (4):932.

Chicago/Turabian Style

Alfonso González González; Justo García-Sanz-Calcedo; David Rodríguez Salgado. 2018. "Quantitative Determination of Potable Cold Water Consumption in German Hospitals." Sustainability 10, no. 4: 932.

Journal article
Published: 01 January 2018 in Sustainable Cities and Society
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ACS Style

Alfonso González González; Justo García-Sanz-Calcedo; David Rodríguez Salgado. A quantitative analysis of final energy consumption in hospitals in Spain. Sustainable Cities and Society 2018, 36, 169 -175.

AMA Style

Alfonso González González, Justo García-Sanz-Calcedo, David Rodríguez Salgado. A quantitative analysis of final energy consumption in hospitals in Spain. Sustainable Cities and Society. 2018; 36 ():169-175.

Chicago/Turabian Style

Alfonso González González; Justo García-Sanz-Calcedo; David Rodríguez Salgado. 2018. "A quantitative analysis of final energy consumption in hospitals in Spain." Sustainable Cities and Society 36, no. : 169-175.

Journal article
Published: 01 January 2017 in Procedia Manufacturing
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ACS Style

D.R. Salgado; A.G. González; J. García Sanz-Calcedo; E.M. Beamud; E. García; P.J. Núñez. Optimal design of planetary gearboxes for application in machine tools. Procedia Manufacturing 2017, 13, 267 -274.

AMA Style

D.R. Salgado, A.G. González, J. García Sanz-Calcedo, E.M. Beamud, E. García, P.J. Núñez. Optimal design of planetary gearboxes for application in machine tools. Procedia Manufacturing. 2017; 13 ():267-274.

Chicago/Turabian Style

D.R. Salgado; A.G. González; J. García Sanz-Calcedo; E.M. Beamud; E. García; P.J. Núñez. 2017. "Optimal design of planetary gearboxes for application in machine tools." Procedia Manufacturing 13, no. : 267-274.

Journal article
Published: 01 January 2017 in Procedia Manufacturing
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ACS Style

A.G. González; D.R Rodríguez; Justo García Sanz-Calcedo. Ergonomic analysis of the dimension of a precision tool handle: a case study. Procedia Manufacturing 2017, 13, 1336 -1343.

AMA Style

A.G. González, D.R Rodríguez, Justo García Sanz-Calcedo. Ergonomic analysis of the dimension of a precision tool handle: a case study. Procedia Manufacturing. 2017; 13 ():1336-1343.

Chicago/Turabian Style

A.G. González; D.R Rodríguez; Justo García Sanz-Calcedo. 2017. "Ergonomic analysis of the dimension of a precision tool handle: a case study." Procedia Manufacturing 13, no. : 1336-1343.

Journal article
Published: 22 September 2016 in Sensors
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Medium-cost devices equipped with sensors are being developed to get 3D measurements. Some allow for generating geometric models and point clouds. Nevertheless, the accuracy of these measurements should be evaluated, taking into account the requirements of the Building Information Model (BIM). This paper analyzes the uncertainty in outdoor/indoor three-dimensional coordinate measures and point clouds (using Spherical Accuracy Standard (SAS) methods) for Eyes Map, a medium-cost tablet manufactured by e-Capture Research & Development Company, Mérida, Spain. To achieve it, in outdoor tests, by means of this device, the coordinates of targets were measured from 1 to 6 m and cloud points were obtained. Subsequently, these were compared to the coordinates of the same targets measured by a Total Station. The Euclidean average distance error was 0.005–0.027 m for measurements by Photogrammetry and 0.013–0.021 m for the point clouds. All of them satisfy the tolerance for point cloud acquisition (0.051 m) according to the BIM Guide for 3D Imaging (General Services Administration); similar results are obtained in the indoor tests, with values of 0.022 m. In this paper, we establish the optimal distances for the observations in both, Photogrammetry and 3D Photomodeling modes (outdoor) and point out some working conditions to avoid in indoor environments. Finally, the authors discuss some recommendations for improving the performance and working methods of the device.

ACS Style

Alonso Sánchez; José-Manuel Naranjo; Antonio Jiménez; Alfonso González González. Analysis of Uncertainty in a Middle-Cost Device for 3D Measurements in BIM Perspective. Sensors 2016, 16, 1557 .

AMA Style

Alonso Sánchez, José-Manuel Naranjo, Antonio Jiménez, Alfonso González González. Analysis of Uncertainty in a Middle-Cost Device for 3D Measurements in BIM Perspective. Sensors. 2016; 16 (10):1557.

Chicago/Turabian Style

Alonso Sánchez; José-Manuel Naranjo; Antonio Jiménez; Alfonso González González. 2016. "Analysis of Uncertainty in a Middle-Cost Device for 3D Measurements in BIM Perspective." Sensors 16, no. 10: 1557.

Research article
Published: 16 June 2016 in Journal of Healthcare Engineering
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An estimation of the water used for human consumption in hospitals is essential to determine possible savings and to fix criteria to improve the design of new water consumption models. The present work reports on cold water for human consumption (CWHC) in hospitals in Spain and determines the possible savings. In the period of 2005–2012, 80 Eco-Management and Audit Schemes (EMAS) from 20 hospitals were analysed. The results conclude that the average annual consumption of CWHC is 1.59 m3/m2(with a standard deviation of 0.48 m3/m2), 195.85 m3/bed (standard deviation 70.07 m3/bed), or 53.69 m3/worker (standard deviation 16.64 m3/worker). The results demonstrate the possibility of saving 5,600,000 m3of water per year. Assuming the cost of water as approximately 1.22 € /m3, annual savings are estimated as 6,832,000 € . Furthermore, 2,912 MWh of energy could be saved, and the emission of 22,400 annual tonnes of CO2into the atmosphere could be avoided.

ACS Style

A.G. González; Justo García Sanz-Calcedo; D. R. Salgado; Angel Mena-Nieto. A Quantitative Analysis of Cold Water for Human Consumption in Hospitals in Spain. Journal of Healthcare Engineering 2016, 2016, 1 -10.

AMA Style

A.G. González, Justo García Sanz-Calcedo, D. R. Salgado, Angel Mena-Nieto. A Quantitative Analysis of Cold Water for Human Consumption in Hospitals in Spain. Journal of Healthcare Engineering. 2016; 2016 ():1-10.

Chicago/Turabian Style

A.G. González; Justo García Sanz-Calcedo; D. R. Salgado; Angel Mena-Nieto. 2016. "A Quantitative Analysis of Cold Water for Human Consumption in Hospitals in Spain." Journal of Healthcare Engineering 2016, no. : 1-10.

Journal article
Published: 01 April 2016 in Materials Science Forum
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This study presents an integrated approach to the teaching of surface metrology and the regulation of electrochemical polishing process control parameters. The electropolishing processes permits different ranges of surface finish through different combinations of the process parameters of current density (J) and electropolishing time (t), and students must have a sound knowledge of the procedure for selecting filters (λs, λc, λf). Thus, experimental trials are undertaken to establish the influence of current density (J) and electropolishing time (t) on surface finish by measuring the arithmetic average roughness parameter (Ra), and setting the filters and measurement procedure for each range of surface finish. The integrated learning of both disciplines enables students to consolidate their knowledge on the methodology for measuring surface roughness (Ra), and to establish direct correlations between variation in process control parameters and the surface finish obtained by characterizing the behaviour of the process.

ACS Style

Pedro José Núñez; E. Beamud; Eustaquio García-Plaza; Justo García Sanz-Calcedo; A.G. González; D. Rodriguez; I. Cambero; A. Marcelo; J.M. Herrera; O. López. Metrology of Surfaces Applied to the Electrochemical Polishing Process. Materials Science Forum 2016, 853, 52 -57.

AMA Style

Pedro José Núñez, E. Beamud, Eustaquio García-Plaza, Justo García Sanz-Calcedo, A.G. González, D. Rodriguez, I. Cambero, A. Marcelo, J.M. Herrera, O. López. Metrology of Surfaces Applied to the Electrochemical Polishing Process. Materials Science Forum. 2016; 853 ():52-57.

Chicago/Turabian Style

Pedro José Núñez; E. Beamud; Eustaquio García-Plaza; Justo García Sanz-Calcedo; A.G. González; D. Rodriguez; I. Cambero; A. Marcelo; J.M. Herrera; O. López. 2016. "Metrology of Surfaces Applied to the Electrochemical Polishing Process." Materials Science Forum 853, no. : 52-57.

Journal article
Published: 01 July 2015 in International Journal of Industrial Ergonomics
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ACS Style

Alfonso González Gonzalez; David Rodríguez Salgado; Lorenzo García-Moruno. Optimisation of a laparoscopic tool handle dimension based on ergonomic analysis. International Journal of Industrial Ergonomics 2015, 48, 16 -24.

AMA Style

Alfonso González Gonzalez, David Rodríguez Salgado, Lorenzo García-Moruno. Optimisation of a laparoscopic tool handle dimension based on ergonomic analysis. International Journal of Industrial Ergonomics. 2015; 48 ():16-24.

Chicago/Turabian Style

Alfonso González Gonzalez; David Rodríguez Salgado; Lorenzo García-Moruno. 2015. "Optimisation of a laparoscopic tool handle dimension based on ergonomic analysis." International Journal of Industrial Ergonomics 48, no. : 16-24.

Journal article
Published: 01 January 2015 in Procedia Engineering
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Welding characteristics has been currently studied according different methods. It generates non-homogeneity of the trials and different ways to develop welds. Academic field experiments don’t follow the same methods and parameters than industrial experiments, because of that results could be extrapolated but without guarantee of success. The regulation is widely used in the industry, but not in academic fields. The main objective of this work is to define a guideline for a comparative testing of different welding technologies and materials according to the regulations. Comparisons between this method and other studies show important differences in the parameters and qualifications of the welds. Using this method is guaranteed export results in the academic field but also in industry.

ACS Style

J.M. Herrera; A. Laso; D.R. Salgado; I. Cambero; A. Marcelo; A.G. González; J. García Sanz-Calcedo; O. Lopez. Definition of a Procedure for the Comparative Analysis of Different Welding Technologies. Procedia Engineering 2015, 132, 709 -715.

AMA Style

J.M. Herrera, A. Laso, D.R. Salgado, I. Cambero, A. Marcelo, A.G. González, J. García Sanz-Calcedo, O. Lopez. Definition of a Procedure for the Comparative Analysis of Different Welding Technologies. Procedia Engineering. 2015; 132 ():709-715.

Chicago/Turabian Style

J.M. Herrera; A. Laso; D.R. Salgado; I. Cambero; A. Marcelo; A.G. González; J. García Sanz-Calcedo; O. Lopez. 2015. "Definition of a Procedure for the Comparative Analysis of Different Welding Technologies." Procedia Engineering 132, no. : 709-715.

Journal article
Published: 01 January 2015 in Procedia Engineering
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The aim of this work is to analyse from a qualitative point of view, the possibility of managing integrated quality, environment and safety in the industry projects, by integrating traditional systems associated with international standards ISO 9001:2015 quality, ISO 14001:2015 environment, OHSAS 18001:2007 for safety and health at work. It will develop an integrated system of management that results in sustainable economic benefits from the perspective of social responsibility of business.

ACS Style

J.G. Sanz-Calcedo; A.G. Gonzalez; O. Lopez; D.R. Salgado; I. Cambero; J.M. Herrera. Analysis on Integrated Management of the Quality, Environment and Safety on the Industrial Projects. Procedia Engineering 2015, 132, 140 -145.

AMA Style

J.G. Sanz-Calcedo, A.G. Gonzalez, O. Lopez, D.R. Salgado, I. Cambero, J.M. Herrera. Analysis on Integrated Management of the Quality, Environment and Safety on the Industrial Projects. Procedia Engineering. 2015; 132 ():140-145.

Chicago/Turabian Style

J.G. Sanz-Calcedo; A.G. Gonzalez; O. Lopez; D.R. Salgado; I. Cambero; J.M. Herrera. 2015. "Analysis on Integrated Management of the Quality, Environment and Safety on the Industrial Projects." Procedia Engineering 132, no. : 140-145.

Journal article
Published: 01 January 2015 in Procedia Engineering
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This work shows an analysis of the design of commercial instruments used in laparoscopic surgery mainly the used materials. In a first phase the study has carried out the current state of the art of these instruments, based mainly on bibliographical references and in consultations to the Jesús Usón Minimally Invasive Surgery Centre and the Institute of Biomechanics of Valencia. In a second phase, a tweezer was been modeled and developed with the software CAD 3D SolidWorks, and later the design has been evaluated, modifying lightly its geometry and materials for reducing the weight. It is important to emphasize the possibilities that SolidWorks offers for the optimization of the design of instruments of laparoscopic surgery. Finally, the study has revealed that with some geometric modifications, that do not modify the use of these instruments, and with some changes in the used materials, it is possible to reduce the weight and facilitates the employment to the user.

ACS Style

A.G. Gonzalez; J. García Sanz-Calcedo; O. Lopez; D.R. Salgado; I. Cambero; J.M. Herrera. Guide Design of Precision tool Handle Based on Ergonomics Criteria Using Parametric CAD Software. Procedia Engineering 2015, 132, 1014 -1020.

AMA Style

A.G. Gonzalez, J. García Sanz-Calcedo, O. Lopez, D.R. Salgado, I. Cambero, J.M. Herrera. Guide Design of Precision tool Handle Based on Ergonomics Criteria Using Parametric CAD Software. Procedia Engineering. 2015; 132 ():1014-1020.

Chicago/Turabian Style

A.G. Gonzalez; J. García Sanz-Calcedo; O. Lopez; D.R. Salgado; I. Cambero; J.M. Herrera. 2015. "Guide Design of Precision tool Handle Based on Ergonomics Criteria Using Parametric CAD Software." Procedia Engineering 132, no. : 1014-1020.

Journal article
Published: 01 June 2014 in Materials Science Forum
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This paper presents a tool wear monitoring system that uses the same signals and prediction strategy for monitoring the machining process of different materials, i.e., a steel and an aluminium alloy. It is an important requirement for a monitoring system to be applied in real applications. Experiments have been performed on a lathe over a range of different cutting conditions, and TiN coated tools were used. The monitoring signals used are the AC feed drive motor current and the cutting vibrations. The geometry tool parameters used as inputs are the tool angle and the radius. The performance of the proposed system was validated against different experiments. In particular, different tests were performed using different numbers of experiments obtaining a rmse for tool wear estimation of 17.63 μm and 13.45 μm for steel and aluminium alloys respectively.

ACS Style

D.R. Salgado; I. Cambero; J.M. Herrera; J. García Sanz-Calcedo; Alfonso González González; Pedro Jose Núñez López; Eustaquio García-Plaza; Pedro Jose Núñez. A Tool Wear Monitoring System for Steel and Aluminium Alloys Based on the same Sensor Signals and Decision Strategy. Materials Science Forum 2014, 797, 17 -22.

AMA Style

D.R. Salgado, I. Cambero, J.M. Herrera, J. García Sanz-Calcedo, Alfonso González González, Pedro Jose Núñez López, Eustaquio García-Plaza, Pedro Jose Núñez. A Tool Wear Monitoring System for Steel and Aluminium Alloys Based on the same Sensor Signals and Decision Strategy. Materials Science Forum. 2014; 797 ():17-22.

Chicago/Turabian Style

D.R. Salgado; I. Cambero; J.M. Herrera; J. García Sanz-Calcedo; Alfonso González González; Pedro Jose Núñez López; Eustaquio García-Plaza; Pedro Jose Núñez. 2014. "A Tool Wear Monitoring System for Steel and Aluminium Alloys Based on the same Sensor Signals and Decision Strategy." Materials Science Forum 797, no. : 17-22.

Conference paper
Published: 01 January 2009 in THIRD MANUFACTURING ENGINEERING SOCIETY INTERNATIONAL CONFERENCE: MESIC‐09
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In this paper a comparative study between the surface roughness obtained in a milling process and in the same process using a mechanical spindle speeder with aluminum workpieces is presented. Mechanical spindle speeders are one of the cheapest solutions to upgrade a conventional machine tool to high‐speed machining. The two machining processes were made under the same cutting conditions, covering a wide range of the cutting conditions with all the experiments. The surface roughness(Ra) is the value measured to obtain the comparative between the two machining operations. It must be noted that when the cutting speed is low (less than 6000 rpm), independently of the feed rate, the surface roughness obtained with the spindle speeder is higher. Nevertheless, the surface roughness is less at higher values of the tool cutting speed when the spindle speeder is used for machining. As result, the optimal cutting conditions for the use of mechanical spindle speeders are determined.

ACS Style

D.R. Salgado; Javier Alonso; I. Cambero; A. Marcelo; A.G. González; Vicente Jesus Segui. Surface Roughness Obtained With And Without The Use Of A Mechanical Spindle Speeder In Milling: A Comparative Study. THIRD MANUFACTURING ENGINEERING SOCIETY INTERNATIONAL CONFERENCE: MESIC‐09 2009, 1 .

AMA Style

D.R. Salgado, Javier Alonso, I. Cambero, A. Marcelo, A.G. González, Vicente Jesus Segui. Surface Roughness Obtained With And Without The Use Of A Mechanical Spindle Speeder In Milling: A Comparative Study. THIRD MANUFACTURING ENGINEERING SOCIETY INTERNATIONAL CONFERENCE: MESIC‐09. 2009; ():1.

Chicago/Turabian Style

D.R. Salgado; Javier Alonso; I. Cambero; A. Marcelo; A.G. González; Vicente Jesus Segui. 2009. "Surface Roughness Obtained With And Without The Use Of A Mechanical Spindle Speeder In Milling: A Comparative Study." THIRD MANUFACTURING ENGINEERING SOCIETY INTERNATIONAL CONFERENCE: MESIC‐09 , no. : 1.

Conference paper
Published: 01 January 2007 in IFAC Proceedings Volumes
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In this paper a new robotized inspection system for PCBs is presented. Electrical and optical tests are carried out by the system, using four mobile probes where two micro CCD cameras are mounted. This new approach becomes a costless and quick setup alternative to the currently used spiked beds for those applications of prototyping developments where maximum flexibility is demanded for the inspection system. A computer vision system provides the capacity for optical inspections where visual tests, like part presence/absence or polarity, can be performed.

ACS Style

J. Gomez; J. Gamez; A.G. González; L. Nieto; S. Satorres; A. Sanchez. A ROBOTIC SYSTEM FOR PCBS INSPECTION BASED ON COMPUTER VISION AND MOBILE PROBES. IFAC Proceedings Volumes 2007, 40, 171 -176.

AMA Style

J. Gomez, J. Gamez, A.G. González, L. Nieto, S. Satorres, A. Sanchez. A ROBOTIC SYSTEM FOR PCBS INSPECTION BASED ON COMPUTER VISION AND MOBILE PROBES. IFAC Proceedings Volumes. 2007; 40 (3):171-176.

Chicago/Turabian Style

J. Gomez; J. Gamez; A.G. González; L. Nieto; S. Satorres; A. Sanchez. 2007. "A ROBOTIC SYSTEM FOR PCBS INSPECTION BASED ON COMPUTER VISION AND MOBILE PROBES." IFAC Proceedings Volumes 40, no. 3: 171-176.

Journal article
Published: 01 January 2004 in Información tecnológica
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ACS Style

D.R. Salgado; A.G. Gonzalez. Diseño de una Transmisión Mecánica para Realizar la División Diferencial. Información tecnológica 2004, 15, 9 -16.

AMA Style

D.R. Salgado, A.G. Gonzalez. Diseño de una Transmisión Mecánica para Realizar la División Diferencial. Información tecnológica. 2004; 15 (5):9-16.

Chicago/Turabian Style

D.R. Salgado; A.G. Gonzalez. 2004. "Diseño de una Transmisión Mecánica para Realizar la División Diferencial." Información tecnológica 15, no. 5: 9-16.