Development and implantation of a Thesaurus of Manufacturing Engineering terms

Present work shows the teaching-learning experience developed in the Department of Manufacturing Engineering of the University of Malaga. This experience is based on the need to generate a specific glossary of manufacturing engineering terms to be used as a study guide by the students. Eventually, it was decided to make a Thesaurus that would be aimed at a teaching activity. Also, it would take part in the educational innovation project PIE 13-025 of the University of Malaga, within the biennium 2013/2015. The first step consisted of the design of Thesaurus pattern, taking into account the kind of information that it was necessary include in it. Afterward, this pattern would be place on the Virtual Campus and the student would have to complete the information required. Finally, the results obtained in the different applications of this activity would be analyzed and evaluated.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Sound recordings of leading professors of Spanish Manufacturing Engineering. Analysis of contents.

ISBN 978-84-09-10387-4"Academic Lives in Industrial Engineering" is one of the different initiatives developed by PATRIF, a Working Group of the Manufacturing Engineering Society (MES) / Sociedad de Ingeniería de Fabricación (SIF). This activity intends to create a sound recording archive with interview format, in order to disseminate the trajectory of the great professors of the Spanish Industrial Engineers Faculties. It seeks to preserve and bring closer to the new generations the experiences and the personality of these professors, with a story told in the first person. This work aims to show the characteristics of this activity, presenting the profile of the interviewees, pointing out the most outstanding aspects of their interventions, carrying out an analysis of the follow-up of the broadcasted interviews and assessing their impact. Despite other areas of engineering are covered in this initiative, present work limit its analysis to the group of professors who have developed their academic and professional life within the Manufacturing Engineering and it also wants to serve as tribute and recognition to their trajectories and dedication to the Spanish Manufacturing Engineering.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Indirect monitoring method of tool wear using the analysis of cutting force during dry machining of Ti alloys

In recent decades, optimize tool life is in constant evolution so many researchers have focused to analysis the tool wear by indirect monitoring (e.g. acoustic emission, cutting forces, vibrations) that plays a significant role in control and improvement of product during of machining operations - in real time to prevent instabilities of process. On another hand, it is recalled that titanium alloys are used in many industries as aerospace sector that have been utilized in strength to weight ration reduction in some parts of aircraft. On the negative side, Ti alloys tends to be hard machining due to their mechanical properties such as low thermal conductivity and modulus of elasticity causing increase cutting temperature, tool breakage or possibility interruption of process.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Application of the Upper Bound Theorem to indentation processes with tilted punch by means of Modular Model

Nowadays, the indentation processes are resuming it importance due to the new deformation processes that are being developed, as the Incremental Forming Process (IFP) or the Localized-Incremental Forming Process (LIFP) [1]. In this paper, a tilt punch is considered in order to cover the largest possible number of cases in the study of the indentation,. Thus, using combinations of flat and tilt punches, it will be possible to analyze complex geometries in future studies. Present study shows the analysis of the indentation process by the Upper Bound Theorem (UBT), when it is performed with a tilt punch. A modular model is developed, compound by two modules of Triangular Rigid Zones (TRZ) each [2], which adapts to the configuration of the punch.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Indirect Adhesion Wear Parametric Analysis in the Dry Turning of UNS A97075 Alloys

In this work a study of the influence of cutting parameters (cutting speed, feed and depth of cut) on indirect adhesion tool wear in the dry machining of UNS A97075 Al-Zn alloys has been made. In addition, an experimental methodology for a first approach to the measurement of Built-Up-Layer on the tool has been developed. Finally, different parametric models have been obtained, which allow predicting the BUL evolution as a function of cutting parameters applied.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Fatigue test bench manufacturing by reusing a parallel lathe

Fatigue life of machined parts strongly depends on their surface condition. The rotating bar bending fatigue testing method is widely used to obtain the fatigue behavior of metallic materials due to its simplicity. In this work, the methodology for the design, manufacturing and setup of a fatigue test bench is exposed. The main novelty lies on the reuse of several elements from an old parallel lathe, currently out of order, and their use to manufacture some parts for the test bench. In this way, a double objective is achieved: high quality elements are recycled and the machine manufacturing cost is reduced.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Upper bound solutions of ring compression test

El presente trabajo aborda una particularización del proceso de forja, estudiando la deformación de un anillo. El conformado plástico se realiza mediante el empleo del Teorema del Límite Superior y siguiendo el modelo de Bloques Rígidos Triangulares para calcular la carga mínima necesaria para deformar plásticamente la pieza. Se establece la pieza a deformar como un anillo de geometría determinada por el denominado Ensayo de Compresión de Anillo (Ring Compression Test) bajo su configuración canónica, justificándose asimilar el proceso a uno de deformación plana. Se plantea desde una nueva perspectiva el estudio del radio neutro (radio a partir del cual el material de la pieza fluye en sentidos contrarios), elemento clave en la solución del problema.Universidad de Málaga, C.E.I. Andalucía Tec

Use of additive manufacturing on models for sand casting process

Casting is a forming process based on material pouring in liquid state. Heat is applied to melt the material from its solid state and pour it in a mold previously constructed to obtain the desired shape after letting it cool. Molds can be permanent or expendable. In sand casting processes, the mold is manufactured from a model that usually is extracted before pouring the melted material (Figure 1). To obtain the part, the sand model needs to be destroyed. Notwithstanding, the sand can be reused several times for new molds. Several elements are needed to obtain a part by a sand casting process: permanent patterns, flasks (cope and drag), gating system (pouring cup, sprue, risers and feeding channels) and cores (only if it is needed). The aim of this work is the manufacturing of some of these elements by additive manufacturing process. The equipment will be used for the practical activities (Figure 1) that currently take place on the subjects where this topic is taught, in the different Degrees in Industrial Engineering at the University of Malaga.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Parametric Analysis of the Ultimate Tensile Strength in Dry Machining of UNS A97075 Alloy

Aluminium alloys (mainly 2XXX and 7XXX series) have been traditionally used in the industry in the manufacture of structural parts in aircrafts, due to their excellent ratio density-mechanical properties. Machining is commonly used in the manufacture of these parts. In addition, the actual trend is machining in dry, due to environmental and economic reasons. Under these conditions, surface integrity becomes one of the most important quality requirements applicable to machined parts. The micro and macro-geometrical properties analysis of the dry machined surface as a function of the cutting parameters is widely studied. Notwithstanding, there is a lack of research in the field dedicated to the physicochemical properties. In this paper the feed influence on the ultimate tensile strength for UNS A97075 (Al-Zn) alloy turned in dry is presented, as a first approximation to the study of the influence of the cutting parameters on this mechanical property.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Influence of the Axial Machining Length on Microgeometrical Deviations of Horizontally Dry-Turned UNS A97075 Al-Zn Alloy

The arithmetical average roughness, Ra, is widely used to evaluate the quality of surface finish in machining parts. Its value depends on cutting parameters: cutting speed, feed and cutting depth. It is necessary to optimize the value of these parameters to achieve the desired quality, especially in the absence of cutting fluids. In this work, a study of the superficial quality of test bars, turned in dry, of an AL-Zn UNS A97075 alloy is presented. The value of Ra has been analyzed along the axial machining length for a series of test-pieces obtained under different combinations of cutting parameters values. The obtained results confirm that feed has the biggest influence. Finally, a potential relationship between Ra, cutting parameters and machining time has been obtained. This relationship allows predicting the behavior of Ra in the range of cutting parameters considered, along the machining time.Universidad de Málaga – Campus de Excelencia Internacional Andalucía Tec