This page has only limited features, please log in for full access.

Unclaimed
Carolina Bermudo
Department of Civil, Materials and Manufacturing Engineering, EII, University of Malaga, 29071 Malaga, Spain

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 13 June 2021 in Metals
Reads 0
Downloads 0

Geometrical tolerances play a very important role in the functionality and assembly of parts made of light alloys for aeronautical applications. These parts are frequently machined in dry conditions. Under these conditions, the tool wear becomes one of the most important variables that influence geometrical tolerances. In this work, the influence of tool wear on roundness, straightness and cylindricity of dry-turned UNS A97075 alloy has been analyzed. The tool wear and form deviations evolution as a function of the cutting parameters and the cutting time has been assessed. In addition, the predominant tool wear mechanisms have been checked. The experimental results revealed that the indirect adhesion wear (BUL and BUE) was the main tool-wear mechanism, with the feed being the most influential cutting parameter. The combination of high feed and low cutting speed values resulted in the highest tool wear. The analyzed form deviations showed a general trend to increase with both cutting parameters. The tool wear and the form deviations tend to increase with the cutting time only within the intermediate range of feed tested. As the main novelty, a relationship between the cutting parameters, the cutting time (and, indirectly, the tool wear) and the analyzed form deviations has been found.

ACS Style

Francisco Trujillo Vilches; Sergio Martín Béjar; Carolina Bermudo Gamboa; Manuel Herrera Fernández; Lorenzo Sevilla Hurtado. Influence of Tool Wear on Form Deviations in Dry Machining of UNS A97075 Alloy. Metals 2021, 11, 958 .

AMA Style

Francisco Trujillo Vilches, Sergio Martín Béjar, Carolina Bermudo Gamboa, Manuel Herrera Fernández, Lorenzo Sevilla Hurtado. Influence of Tool Wear on Form Deviations in Dry Machining of UNS A97075 Alloy. Metals. 2021; 11 (6):958.

Chicago/Turabian Style

Francisco Trujillo Vilches; Sergio Martín Béjar; Carolina Bermudo Gamboa; Manuel Herrera Fernández; Lorenzo Sevilla Hurtado. 2021. "Influence of Tool Wear on Form Deviations in Dry Machining of UNS A97075 Alloy." Metals 11, no. 6: 958.

Journal article
Published: 12 May 2020 in Metals
Reads 0
Downloads 0

Fatigue behavior takes special relevance in structural parts for aircraft due to safety reasons. Despite its environmental advantages, dry machining of these parts may negatively affect their surface integrity, which may lead to a reduction in fatigue life. Nevertheless, there is a lack of research focused on the analysis of the cutting parameters influence on fatigue behavior in dry machining of aeronautical aluminum alloys, in spite of its importance. Therefore, in this work, an analysis of the cutting speed and feed influence on fatigue behavior of dry turned UNS A97075-T6 alloy is presented. The stress-fatigue life curves have been obtained and corrected according to the applied cutting parameters values. Additionally, the surface roughness and two macro-geometrical deviations (cylindricity and concentricity) have been controlled. The experimental results have revealed that fatigue life is reduced when high values of cutting speed and feed are combined. Finally, a parametric potential equation for fatigue life, as a function of the load and the cutting parameters, has been developed. The relation has been obtained for the theoretical fracture section and, as the main novelty, corrected for the real one.

ACS Style

Sergio Martín Béjar; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. Fatigue Behavior Parametric Analysis of Dry Machined UNS A97075 Aluminum Alloy. Metals 2020, 10, 631 .

AMA Style

Sergio Martín Béjar, Francisco Javier Trujillo Vilches, Carolina Bermudo Gamboa, Lorenzo Sevilla Hurtado. Fatigue Behavior Parametric Analysis of Dry Machined UNS A97075 Aluminum Alloy. Metals. 2020; 10 (5):631.

Chicago/Turabian Style

Sergio Martín Béjar; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. 2020. "Fatigue Behavior Parametric Analysis of Dry Machined UNS A97075 Aluminum Alloy." Metals 10, no. 5: 631.

Journal article
Published: 05 February 2020 in Applied Sciences
Reads 0
Downloads 0

In this work, an analysis of the cutting speed and feed influence on surface roughness and microhardness of UNS A97075-T6 alloy, turned under dry conditions, was carried out. The results were compared before and after a corrosion process. The influence of these cutting parameters on each of these variables was analyzed, as well as the possible interrelation between them. The microgeometrical deviations showed a general trend to increase with feed. However, no significant modifications were observed as a function of the cutting speed. This trend was softer after the corrosion process, due to the surface alterations produced by pitting corrosion, which resulted in higher dispersion of the experimental data. In addition, a surface microhardness increment was observed in all samples, after machining and before corrosion, regardless of the cutting parameter values. The experimental results revealed that the mechanical effects, produced by the feed, should not be neglected against the thermal effects, produced by the cutting speed, within the range of the tested cutting speed. Finally, the corrosion process negatively affected the microhardness, but it was not possible to establish a direct relationship between the cutting parameters, surface roughness, and microhardness after a corrosion process.

ACS Style

Sergio Martín-Béjar; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. Cutting Speed and Feed Influence on Surface Microhardness of Dry-Turned UNS A97075-T6 Alloy. Applied Sciences 2020, 10, 1049 .

AMA Style

Sergio Martín-Béjar, Francisco Javier Trujillo Vilches, Carolina Bermudo Gamboa, Lorenzo Sevilla Hurtado. Cutting Speed and Feed Influence on Surface Microhardness of Dry-Turned UNS A97075-T6 Alloy. Applied Sciences. 2020; 10 (3):1049.

Chicago/Turabian Style

Sergio Martín-Béjar; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. 2020. "Cutting Speed and Feed Influence on Surface Microhardness of Dry-Turned UNS A97075-T6 Alloy." Applied Sciences 10, no. 3: 1049.

Journal article
Published: 11 December 2019 in Materials
Reads 0
Downloads 0

Nowadays, localized forming operations, such as incremental forming processes, are being developed as an alternative to conventional machining or forming techniques. An indentation process is the main action that takes places in these forming activities, allowing small, localized deformations. It is essential to have the knowledge of the material behavior under the punch and the transmitted forces to achieve correct control of the entire procedure. This paper presents the work carried out with the digital image correlation (DIC) technique applied to the study of the material flow that takes place under an indentation process. The material flow analysis is performed under 2D and 3D conditions, establishing the methodology for the calibration and implementation for each alternative. Two-dimensional DIC has been proven to be a satisfactory technique compared with the 3D method, showing results in good agreement with experimental tests and models developed by the finite element method. Notwithstanding, part of the indented material flows under the punch, emerging on the front surface and generating a dead zone that can only be addressed with a 3D technique. So, the main objective is to carry out a comparison between the 2D and 3D techniques to identify if the 3D application could be mandatory for this type of process. Also, a 2D–3D mix analysis is proposed for study cases in which it is necessary to know the material flow in that specific area of the workpiece.

ACS Style

Carolina Bermudo Gamboa; Sergio Martín-Béjar; F. Javier Trujillo Vilches; G. Castillo López; Lorenzo Sevilla Hurtado. 2D–3D Digital Image Correlation Comparative Analysis for Indentation Process. Materials 2019, 12, 4156 .

AMA Style

Carolina Bermudo Gamboa, Sergio Martín-Béjar, F. Javier Trujillo Vilches, G. Castillo López, Lorenzo Sevilla Hurtado. 2D–3D Digital Image Correlation Comparative Analysis for Indentation Process. Materials. 2019; 12 (24):4156.

Chicago/Turabian Style

Carolina Bermudo Gamboa; Sergio Martín-Béjar; F. Javier Trujillo Vilches; G. Castillo López; Lorenzo Sevilla Hurtado. 2019. "2D–3D Digital Image Correlation Comparative Analysis for Indentation Process." Materials 12, no. 24: 4156.

Journal article
Published: 24 October 2019 in Metals
Reads 0
Downloads 0

Macro-geometrical deviations play a very important role in the functionality and reliability of structural parts for aircraft. The use of environmentally friendly techniques, such as dry machining, may negatively affect these deviations. Despite its importance, there is a lack of research that analyzes them as a function of the cutting parameters in the case of aluminum alloys for aeronautical purpose. In this work, the cutting speed and feed influence on several macro-geometrical deviations (parallelism, straightness, circular run-out, roundness, concentricity, total circular run-out and cylindricity) in dry turning of UNS A97075 alloy was analyzed. The main novelty of this work lies in the use of high slenderness parts used in further fatigue tests. The results showed that feed seems to be the most influential parameter in most of the deviations studied. In addition, the parts with lower rigidity exhibited higher sensitivity to change with the cutting parameters. Finally, different parametric models were proposed to obtain the geometrical deviations as a function of the cutting parameters.

ACS Style

Sergio Martín Béjar; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. Parametric Analysis of Macro-Geometrical Deviations in Dry Turning of UNS A97075 (Al-Zn) Alloy. Metals 2019, 9, 1141 .

AMA Style

Sergio Martín Béjar, Francisco Javier Trujillo Vilches, Carolina Bermudo Gamboa, Lorenzo Sevilla Hurtado. Parametric Analysis of Macro-Geometrical Deviations in Dry Turning of UNS A97075 (Al-Zn) Alloy. Metals. 2019; 9 (11):1141.

Chicago/Turabian Style

Sergio Martín Béjar; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. 2019. "Parametric Analysis of Macro-Geometrical Deviations in Dry Turning of UNS A97075 (Al-Zn) Alloy." Metals 9, no. 11: 1141.

Journal article
Published: 17 September 2019 in Metals
Reads 0
Downloads 0

In this work, the analysis of the cutting speed and feed rate influence on tool wear and cutting forces in Ti6Al4V alloy dry machining is presented. The study has been focused on the machining in a transient state. The tool wear mechanisms, tool wear intensity and cutting forces evolution have been analyzed as a function of the cutting parameters. Experimental results show that the main cutting force amplitude exhibits a general trend to increase with both cutting parameters. Crater wear was more evident at high cutting speeds, whereas flank wear was present on the whole interval of the cutting parameters analyzed. Furthermore, the cutting speed shows a slightly higher influence on crater wear and the feed rate shows a higher influence on flank wear. Finally, several experimental parametric models have been obtained. These models allow predicting the evolution of crater and flank tool wear, as well as the cutting forces, as a function of the cutting parameters. Additionally, a model that allows monitoring the tool wear on the machining transient state as a function of the main cutting force amplitude has been developed.

ACS Style

Yezika Sánchez Hernández; F. Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado; Sánchez Hernández; Trujillo Vilches; Bermudo Gamboa; Sevilla Hurtado. Online Tool Wear Monitoring by the Analysis of Cutting Forces in Transient State for Dry Machining of Ti6Al4V Alloy. Metals 2019, 9, 1014 .

AMA Style

Yezika Sánchez Hernández, F. Javier Trujillo Vilches, Carolina Bermudo Gamboa, Lorenzo Sevilla Hurtado, Sánchez Hernández, Trujillo Vilches, Bermudo Gamboa, Sevilla Hurtado. Online Tool Wear Monitoring by the Analysis of Cutting Forces in Transient State for Dry Machining of Ti6Al4V Alloy. Metals. 2019; 9 (9):1014.

Chicago/Turabian Style

Yezika Sánchez Hernández; F. Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado; Sánchez Hernández; Trujillo Vilches; Bermudo Gamboa; Sevilla Hurtado. 2019. "Online Tool Wear Monitoring by the Analysis of Cutting Forces in Transient State for Dry Machining of Ti6Al4V Alloy." Metals 9, no. 9: 1014.

Journal article
Published: 01 January 2019 in Procedia Manufacturing
Reads 0
Downloads 0

Focusing on the application of the 3D Digital Image Correlation technique, this work proposes a material flow analysis of an indentation process. The study establishes the methodology for the calibration and implementation of the 3D image sensing technology for deformation measurements. The purpose is to continue with the validation of DIC application on the indentation processes, where a deep penetration is achieved and extensive material flow is produced. With the 3D DIC technique is possible to perform accurate deformation measurements in non planar specimens and study the material emerging towards the exterior of the tested specimen, which is not possible with the 2D DIC technique. Although previous 2D studies were efficient detecting the flow field and von Mises strains on the specimens tested, the bulge emerging under the punch on the front surface (dead zone) could not be studied due to its predominantly 3D character. Therefore, present work implements a 3D methodology that carries out a complete deformation study, including the material flow that occurs on the Z axis, towards the exterior of the tested specimen, optimizing previous analyses.

ACS Style

C. Bermudo; S. Martín-Béjar; F.J. Trujillo; G. Castillo; L. Sevilla. Material flow analysis in indentation process by 3D Digital Image Correlation. Procedia Manufacturing 2019, 41, 26 -33.

AMA Style

C. Bermudo, S. Martín-Béjar, F.J. Trujillo, G. Castillo, L. Sevilla. Material flow analysis in indentation process by 3D Digital Image Correlation. Procedia Manufacturing. 2019; 41 ():26-33.

Chicago/Turabian Style

C. Bermudo; S. Martín-Béjar; F.J. Trujillo; G. Castillo; L. Sevilla. 2019. "Material flow analysis in indentation process by 3D Digital Image Correlation." Procedia Manufacturing 41, no. : 26-33.

Journal article
Published: 23 July 2018 in Materials
Reads 0
Downloads 0

The Ti6Al4V alloy is included in the group of difficult-to-cut materials. Segmented chips are generated for a wide range of cutting parameters. This kind of chip geometry leads to the periodic variation of machining forces, tool vibrations, and work part-tolerance inaccuracies. Therefore, the analysis of chip morphology and geometry becomes a fundamental machinability criterion. However, few studies propose experimental parametric relationships that allow predicting chip-geometry evolution as a function of cutting parameters. In this work, an experimental analysis of the influence of cutting speed and feed rate on various chip-geometric parameters in dry machining of the Ti6Al4V alloy was carried out. In addition, the chip morphology and chip microstructure were studied. A clear dependence of certain chip-geometric parameters on the cutting parameters studied was found. From the experimental data, several parametric relationships were developed. These relationships were able to predict the evolution of different geometric parameters as a function of cutting speed and feed, within the tested range of values. The differences between the proposed models and the experimental data were also highlighted. These parametric equations allowed quantifying the value of parameters in which the trend was clear.

ACS Style

Yezika Sánchez Hernández; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. Experimental Parametric Relationships for Chip Geometry in Dry Machining of the Ti6Al4V Alloy. Materials 2018, 11, 1260 .

AMA Style

Yezika Sánchez Hernández, Francisco Javier Trujillo Vilches, Carolina Bermudo Gamboa, Lorenzo Sevilla Hurtado. Experimental Parametric Relationships for Chip Geometry in Dry Machining of the Ti6Al4V Alloy. Materials. 2018; 11 (7):1260.

Chicago/Turabian Style

Yezika Sánchez Hernández; Francisco Javier Trujillo Vilches; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. 2018. "Experimental Parametric Relationships for Chip Geometry in Dry Machining of the Ti6Al4V Alloy." Materials 11, no. 7: 1260.

Article
Published: 21 June 2017 in Materials
Reads 0
Downloads 0

The present work shows the material flow analysis in indentation by the numerical two dimensional Finite Elements (FEM) method and the experimental two-dimensional Digital Image Correlation (DIC) method. To achieve deep indentation without cracking, a ductile material, 99% tin, is used. The results obtained from the DIC technique depend predominantly on the pattern conferred to the samples. Due to the absence of a natural pattern, black and white spray painting is used for greater contrast. The stress-strain curve of the material has been obtained and introduced in the Finite Element simulation code used, DEFORM™, allowing for accurate simulations. Two different 2D models have been used: a plain strain model to obtain the load curve and a plain stress model to evaluate the strain maps on the workpiece surface. The indentation displacement load curve has been compared between the FEM and the experimental results, showing a good correlation. Additionally, the strain maps obtained from the material surface with FEM and DIC are compared in order to validate the numerical model. The Von Mises strain results between both of them present a 10–20% difference. The results show that FEM is a good tool for simulating indentation processes, allowing for the evaluation of the maximum forces and deformations involved in the forming process. Additionally, the non-contact DIC technique shows its potential by measuring the superficial strain maps, validating the FEM results.

ACS Style

Carolina Bermudo; Lorenzo Sevilla; Germán Castillo López. Material Flow Analysis in Indentation by Two-Dimensional Digital Image Correlation and Finite Elements Method. Materials 2017, 10, 674 .

AMA Style

Carolina Bermudo, Lorenzo Sevilla, Germán Castillo López. Material Flow Analysis in Indentation by Two-Dimensional Digital Image Correlation and Finite Elements Method. Materials. 2017; 10 (6):674.

Chicago/Turabian Style

Carolina Bermudo; Lorenzo Sevilla; Germán Castillo López. 2017. "Material Flow Analysis in Indentation by Two-Dimensional Digital Image Correlation and Finite Elements Method." Materials 10, no. 6: 674.

Journal article
Published: 19 May 2017 in Materials
Reads 0
Downloads 0

The application of incremental processes in the manufacturing industry is having a great development in recent years. The first stage of an Incremental Forming Process can be defined as an indentation. Because of this, the indentation process is starting to be widely studied, not only as a hardening test but also as a forming process. Thus, in this work, an analysis of the indentation process under the new Modular Upper Bound perspective has been performed. The modular implementation has several advantages, including the possibility of the introduction of different parameters to extend the study, such as the friction effect, the temperature or the hardening effect studied in this paper. The main objective of the present work is to analyze the three hardening models developed depending on the material characteristics. In order to support the validation of the hardening models, finite element analyses of diverse materials under an indentation are carried out. Results obtained from the Modular Upper Bound are in concordance with the results obtained from the numerical analyses. In addition, the numerical and analytical methods are in concordance with the results previously obtained in the experimental indentation of annealed aluminum A92030. Due to the introduction of the hardening factor, the new modular distribution is a suitable option for the analysis of indentation process.

ACS Style

Carolina Bermudo; Lorenzo Sevilla; Francisco Martín; Francisco Javier Trujillo. Hardening Effect Analysis by Modular Upper Bound and Finite Element Methods in Indentation of Aluminum, Steel, Titanium and Superalloys. Materials 2017, 10, 556 .

AMA Style

Carolina Bermudo, Lorenzo Sevilla, Francisco Martín, Francisco Javier Trujillo. Hardening Effect Analysis by Modular Upper Bound and Finite Element Methods in Indentation of Aluminum, Steel, Titanium and Superalloys. Materials. 2017; 10 (5):556.

Chicago/Turabian Style

Carolina Bermudo; Lorenzo Sevilla; Francisco Martín; Francisco Javier Trujillo. 2017. "Hardening Effect Analysis by Modular Upper Bound and Finite Element Methods in Indentation of Aluminum, Steel, Titanium and Superalloys." Materials 10, no. 5: 556.

Journal article
Published: 27 January 2017 in Applied Sciences
Reads 0
Downloads 0

Aluminum alloys are widely used in the manufacturing of structural parts for aircraft, frequently in combination with other materials such as CFRP (Carbon Fiber Reinforced Polymer), to form FML (Fiber Metal Laminates) structures (CFRP/Al). The dry machining of these structures presents several problems, some of which are related to chip evacuation, either when machining aluminum alloys as an isotropic material, or during hybridization with composites. In this work, a study of the way in which cutting parameters influence the chip morphology in the dry machining of UNS A97075-T6 (Al-Zn) and UNS A92024-T3 (Al-Cu) alloys, is performed. Thus, different geometric parameters of the chip morphology have been obtained, and their evolution with feed has been analysed. Finally, the different relationships which occur between these geometric parameters and feed, have been obtained. These relationships allow a prediction of the evolution of some of the geometric parameters of the chip, as a function of feed.

ACS Style

Francisco Javier Trujillo Vilches; Lorenzo Sevilla Hurtado; Francisco Martín Fernández; Carolina Bermudo Gamboa. Analysis of the Chip Geometry in Dry Machining of Aeronautical Aluminum Alloys. Applied Sciences 2017, 7, 132 .

AMA Style

Francisco Javier Trujillo Vilches, Lorenzo Sevilla Hurtado, Francisco Martín Fernández, Carolina Bermudo Gamboa. Analysis of the Chip Geometry in Dry Machining of Aeronautical Aluminum Alloys. Applied Sciences. 2017; 7 (2):132.

Chicago/Turabian Style

Francisco Javier Trujillo Vilches; Lorenzo Sevilla Hurtado; Francisco Martín Fernández; Carolina Bermudo Gamboa. 2017. "Analysis of the Chip Geometry in Dry Machining of Aeronautical Aluminum Alloys." Applied Sciences 7, no. 2: 132.

Journal article
Published: 01 January 2017 in International Journal of Mechatronics and Manufacturing Systems
Reads 0
Downloads 0

Present study yields an alternative technique to model an indentation process, considering the hardening effect. Earlier works focus on modelling the material behaviour during indentation under the new Modular Upper Bound Theorem. The material was analysed under plane strain conditions and rigidperfectly plastic material. Now, the aim of this research is to confer versatility to the new model developed, enriching the study and bringing results closer reality. Hence, a better approximation of the new Modular Upper Bound Theorem to a real indentation process is achieved by the introduction and study of the hardening effect. This is accomplished following the Ludwik equation for the modular configuration and implementing several simulations under finite element method analysis. To investigate the effectiveness of the developed model, results obtained with both methods are compared, showing only a difference between 3% to 5% for the optimum configuration considered, exposing again the consistency of the model.

ACS Style

Lorenzo Sevilla Hurtado; Carolina Bermudo Gamboa; Francisco De Sales Martín Fernández. Hardening effect analysis in indentation processes by modular configuration of the upper bound theorem. International Journal of Mechatronics and Manufacturing Systems 2017, 10, 59 .

AMA Style

Lorenzo Sevilla Hurtado, Carolina Bermudo Gamboa, Francisco De Sales Martín Fernández. Hardening effect analysis in indentation processes by modular configuration of the upper bound theorem. International Journal of Mechatronics and Manufacturing Systems. 2017; 10 (1):59.

Chicago/Turabian Style

Lorenzo Sevilla Hurtado; Carolina Bermudo Gamboa; Francisco De Sales Martín Fernández. 2017. "Hardening effect analysis in indentation processes by modular configuration of the upper bound theorem." International Journal of Mechatronics and Manufacturing Systems 10, no. 1: 59.

Journal article
Published: 01 January 2017 in International Journal of Mechatronics and Manufacturing Systems
Reads 0
Downloads 0

Present study yields an alternative technique to model an indentation process, considering the hardening effect. Earlier works focus on modelling the material behaviour during indentation under the new Modular Upper Bound Theorem. The material was analysed under plane strain conditions and rigidperfectly plastic material. Now, the aim of this research is to confer versatility to the new model developed, enriching the study and bringing results closer reality. Hence, a better approximation of the new Modular Upper Bound Theorem to a real indentation process is achieved by the introduction and study of the hardening effect. This is accomplished following the Ludwik equation for the modular configuration and implementing several simulations under finite element method analysis. To investigate the effectiveness of the developed model, results obtained with both methods are compared, showing only a difference between 3% to 5% for the optimum configuration considered, exposing again the consistency of the model.

ACS Style

Carolina Bermudo Gamboa; Francisco De Sales Martín Fernández; Lorenzo Sevilla Hurtado. Hardening effect analysis in indentation processes by modular configuration of the upper bound theorem. International Journal of Mechatronics and Manufacturing Systems 2017, 10, 59 .

AMA Style

Carolina Bermudo Gamboa, Francisco De Sales Martín Fernández, Lorenzo Sevilla Hurtado. Hardening effect analysis in indentation processes by modular configuration of the upper bound theorem. International Journal of Mechatronics and Manufacturing Systems. 2017; 10 (1):59.

Chicago/Turabian Style

Carolina Bermudo Gamboa; Francisco De Sales Martín Fernández; Lorenzo Sevilla Hurtado. 2017. "Hardening effect analysis in indentation processes by modular configuration of the upper bound theorem." International Journal of Mechatronics and Manufacturing Systems 10, no. 1: 59.

Journal article
Published: 12 July 2016 in Applied Sciences
Reads 0
Downloads 0

Focusing on incremental bulk metal forming processes, the indentation process is gaining interest as a fundamental part of these kinds of processes. This paper presents the analysis of the pressure obtained in indentation under the influence of different punch geometries. To this end, an innovative Upper Bound Theorem (UBT) based solution is introduced. This new solution can be easily applied to estimate the necessary force that guarantees plastic deformation by an indentation process. In this work, we propose an accurate analytical approach to analyse indentation under different punches. The new Modular Upper Bound (MUB) method presents a simpler and faster application. Additionally, its complexity is not considerably increased by the addition of more Triangular Rigid Zones. In addition, a two-dimensional indentation model is designed and implemented using the Finite Element Method (FEM). The comparison of the two methods applied to the indentation process analysed—the new Modular Upper Bound technique and the Finite Element Method—reveal close similarities, the new Modular Upper Bound being more computationally efficient.

ACS Style

Carolina Bermudo; Lorenzo Sevilla; Francisco Martín; Francisco J. Trujillo. Study of the Tool Geometry Influence in Indentation for the Analysis and Validation of the New Modular Upper Bound Technique. Applied Sciences 2016, 6, 203 .

AMA Style

Carolina Bermudo, Lorenzo Sevilla, Francisco Martín, Francisco J. Trujillo. Study of the Tool Geometry Influence in Indentation for the Analysis and Validation of the New Modular Upper Bound Technique. Applied Sciences. 2016; 6 (7):203.

Chicago/Turabian Style

Carolina Bermudo; Lorenzo Sevilla; Francisco Martín; Francisco J. Trujillo. 2016. "Study of the Tool Geometry Influence in Indentation for the Analysis and Validation of the New Modular Upper Bound Technique." Applied Sciences 6, no. 7: 203.

Journal article
Published: 01 April 2016 in Materials Science Forum
Reads 0
Downloads 0

The purpose of this work is to analyze the methodology developed in the Educational Innovation Project PIE13-025 implementation. The methodology aims to promote the ICT tools (Information and Communication Technologies) use by means of the Campus Virtual platform. The subjects set in which the methodology is applied belongs to the Area of “Manufacturing Engineering”, being all of them taught in the majority of the technical degrees within University of Malaga and Andalusia Tech. When the distinguishing characteristics of these contents have been identified, two specific teaching resources have been considered to be the best of the Manufacturing Engineering: “Thesaurus” and “Graphipedia”. Both can be developed using the Campus Virtual tools and other external applications.

ACS Style

Lorenzo Sevilla; M.J. Martin; F. Martín; C. Bermudo; F.J. Trujillo; Carolina Bermudo Gamboa. Thesaurus and Graphipedia Tools Development at the Manufacturing Engineering Subjects of the University of Malaga. Materials Science Forum 2016, 853, 85 -90.

AMA Style

Lorenzo Sevilla, M.J. Martin, F. Martín, C. Bermudo, F.J. Trujillo, Carolina Bermudo Gamboa. Thesaurus and Graphipedia Tools Development at the Manufacturing Engineering Subjects of the University of Malaga. Materials Science Forum. 2016; 853 ():85-90.

Chicago/Turabian Style

Lorenzo Sevilla; M.J. Martin; F. Martín; C. Bermudo; F.J. Trujillo; Carolina Bermudo Gamboa. 2016. "Thesaurus and Graphipedia Tools Development at the Manufacturing Engineering Subjects of the University of Malaga." Materials Science Forum 853, no. : 85-90.

Other
Published: 01 January 2015 in Procedia Engineering
Reads 0
Downloads 0
ACS Style

C. Bermudo; F. Martín; L. Sevilla; Carolina Bermudo Gamboa. Hardening Study on the Application of the Upper Bound Theorem in Indentation Processes by Means of Modules of Triangular Rigid Zones. Procedia Engineering 2015, 132, 282 -289.

AMA Style

C. Bermudo, F. Martín, L. Sevilla, Carolina Bermudo Gamboa. Hardening Study on the Application of the Upper Bound Theorem in Indentation Processes by Means of Modules of Triangular Rigid Zones. Procedia Engineering. 2015; 132 ():282-289.

Chicago/Turabian Style

C. Bermudo; F. Martín; L. Sevilla; Carolina Bermudo Gamboa. 2015. "Hardening Study on the Application of the Upper Bound Theorem in Indentation Processes by Means of Modules of Triangular Rigid Zones." Procedia Engineering 132, no. : 282-289.

Other
Published: 01 January 2015 in Procedia Engineering
Reads 0
Downloads 0
ACS Style

C. Bermudo; F. Martín; L. Sevilla; Carolina Bermudo Gamboa. Application of the Upper Bound Theorem to Indentation Processes with Tilted Punch by Means of Modular Model. Procedia Engineering 2015, 132, 274 -281.

AMA Style

C. Bermudo, F. Martín, L. Sevilla, Carolina Bermudo Gamboa. Application of the Upper Bound Theorem to Indentation Processes with Tilted Punch by Means of Modular Model. Procedia Engineering. 2015; 132 ():274-281.

Chicago/Turabian Style

C. Bermudo; F. Martín; L. Sevilla; Carolina Bermudo Gamboa. 2015. "Application of the Upper Bound Theorem to Indentation Processes with Tilted Punch by Means of Modular Model." Procedia Engineering 132, no. : 274-281.

Journal article
Published: 31 December 2013 in Procedia Engineering
Reads 0
Downloads 0

Having established the best adaptation and solution offered by the modular model in previous studies, the current choice is based on the minimization of the p/2k dimensionless relation obtained in each model, analyzed under the same boundary conditions and efforts. This paper shows the study for the optimal choice of the geometric distribution of blocks among the different covered. The Upper Bound Theorem (UBT) is applied by Triangular Rigid Blocks (TRB) under modular distribution to an indentation process. Cases of different thicknesses are considered to extend the application of the model.

ACS Style

C. Bermudo; F. Martín; L. Sevilla; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. Analysis and Selection of the Modular Block Distribution in Indentation Process by the Upper Bound Theorem. Procedia Engineering 2013, 63, 388 -396.

AMA Style

C. Bermudo, F. Martín, L. Sevilla, Carolina Bermudo Gamboa, Lorenzo Sevilla Hurtado. Analysis and Selection of the Modular Block Distribution in Indentation Process by the Upper Bound Theorem. Procedia Engineering. 2013; 63 ():388-396.

Chicago/Turabian Style

C. Bermudo; F. Martín; L. Sevilla; Carolina Bermudo Gamboa; Lorenzo Sevilla Hurtado. 2013. "Analysis and Selection of the Modular Block Distribution in Indentation Process by the Upper Bound Theorem." Procedia Engineering 63, no. : 388-396.

Book chapter
Published: 13 October 2013 in Mechanical Engineering and Materials
Reads 0
Downloads 0

The knowledge of the different machines operation and their main mechanism has a great importance in mechanical engineer formation. Thus, in the manufacturing field, it is essential to understand the behaviour and basic principles of the machine tools. This paper presents some experiences developed by the manufacturing teachers of the University of Malaga to facilitate teaching of a high number of common machine-tools in mechanical engineering such as lathes, milling machines, drill press, planers or shapers. For this, a lot of technological data have been compiled to recreate the mechanical configurations, with more than 300 pieces in several cases, resulting in a virtual environment. Actually, the high number of students in the Engineering Faculties, the limited availability of these machines in laboratories and the difficulty to visualize the internal mechanisms show that the virtualization of this machine tools, presented in this work, provide an effective mean to transmit knowledge to the Engineering students, serving as an essential complement in the study of motion transmission mechanisms. In order to achieve greater effectiveness, each education project is enclosed with a guide where students can follow the operation of the machine tools in each virtualization.

ACS Style

M. J. Martín; F. Martín; C. Bermudo; L. Sevilla. Teaching Machines Tools Operation in Virtual Laboratories of Engineering Faculties. Mechanical Engineering and Materials 2013, 163 -169.

AMA Style

M. J. Martín, F. Martín, C. Bermudo, L. Sevilla. Teaching Machines Tools Operation in Virtual Laboratories of Engineering Faculties. Mechanical Engineering and Materials. 2013; ():163-169.

Chicago/Turabian Style

M. J. Martín; F. Martín; C. Bermudo; L. Sevilla. 2013. "Teaching Machines Tools Operation in Virtual Laboratories of Engineering Faculties." Mechanical Engineering and Materials , no. : 163-169.

Journal article
Published: 01 February 2012 in Materials Science Forum
Reads 0
Downloads 0

Present work poses, from the methodological point of view, an approach to a case offorging by indentation by means of the application of the Upper Bound Element Technique(UBET), in his development of triangular rigid blocks (TRB). With two approaches of differentnature (Modulate and not Modulate), it tackles the study of the evolution of the necessary minimumenergy to attain the required deformation. The UBET allows a suitable implementation of theboundary conditions of the process, as well as the characteristic of the same, such as the kind offriction or the geometrical considerations, without limit on the flow of material in contrary directionto the applied load by the tool.

ACS Style

F. Martín; L. Sevilla; C. Bermudo; Lorenzo Sevilla Hurtado; Carolina Bermudo Gamboa. Analytical Approach to the Indentation Process. Application of the Upper Bound Element Technique. Materials Science Forum 2012, 713, 13 -18.

AMA Style

F. Martín, L. Sevilla, C. Bermudo, Lorenzo Sevilla Hurtado, Carolina Bermudo Gamboa. Analytical Approach to the Indentation Process. Application of the Upper Bound Element Technique. Materials Science Forum. 2012; 713 ():13-18.

Chicago/Turabian Style

F. Martín; L. Sevilla; C. Bermudo; Lorenzo Sevilla Hurtado; Carolina Bermudo Gamboa. 2012. "Analytical Approach to the Indentation Process. Application of the Upper Bound Element Technique." Materials Science Forum 713, no. : 13-18.