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Carlos Javierre   Dr.  University Educator/Researcher 
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Carlos Javierre published an article in November 2018.
Top co-authors See all
Juan José Aguilar

51 shared publications

Instituto de Investigación en Ingeniería de Aragón, Universidad de Zaragoza, María de Luna 3, Zaragoza 50018, Spain

Patricia Gómez

36 shared publications

Instituto de Ciencias del Mar y Limnología, Unidad Académica Ecología y Biodiversidad Acuática, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, D.F. México C.P. 04510

Daniel Elduque

17 shared publications

I+AITIIP, Department of Mechanical Engineering, EINA; University of Zaragoza, C/María de Luna, 3, 50018 Zaragoza, Spain

Judith Sarasa

8 shared publications

Ana Elduque

7 shared publications

BSH Electrodomésticos España S. A., Avda. de la Industria, 49, 50016 Zaragoza, Spain

12
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27
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4
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Publication Record
Distribution of Articles published per year 
(2006 - 2018)
Total number of journals
published in
 
6
 
Publications See all
Article 0 Reads 0 Citations Analysis of self-lubrication enhancement via PA66 strategies: Texturing and nano-reinforcement with ZrO2 and graphene Isabel Clavería, Daniel Elduque, Aleida Lostalé, Ángel Ferná... Published: 01 November 2018
Tribology International, doi: 10.1016/j.triboint.2018.10.044
DOI See at publisher website
Article 0 Reads 0 Citations Influence of the Composition on the Environmental Impact of Soft Ferrites Patricia Gómez, Daniel Elduque, Carmelo Pina, Carlos Javierr... Published: 20 September 2018
Materials, doi: 10.3390/ma11101789
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The aim of this paper is to analyze the influence of the composition on the environmental impact of the two main types of soft ferrites, allowing scientists and engineers to compare them based not only on cost and properties, but also on an environmental point of view. Iron oxides are the basis of soft ferrites, but these ferrites have a wide range of compositions, using materials such as manganese or nickel, which affect their magnetic properties, but also modify the environmental impact. A Life Cycle Assessment has been carried out for manganese‒zinc (MnZn) and nickel‒zinc (NiZn) soft ferrites, with a Monte Carlo approach to assess multiple compositions. The LCA model was developed with SimaPro 8.4, using the EcoInvent v3.4 life cycle inventory database. Environmental impact values were calculated under the ReCiPe and Carbon Footprint methodologies, obtaining a broad variety of results depending on the composition. The results were also significantly different from the standard EcoInvent ferrite. For the analyzed soft ferrites, the presence of manganese or nickel is a key factor from an environmental perspective, as these materials involve high environmental impacts, and their supply risk has increased during recent years, making them a concern for European manufacturers.
Article 0 Reads 0 Citations Electricity Consumption Estimation of the Polymer Material Injection-Molding Manufacturing Process: Empirical Model and ... Ana Elduque, Daniel Elduque, Carmelo Pina, Isabel Clavería, ... Published: 16 September 2018
Materials, doi: 10.3390/ma11091740
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Polymer injection-molding is one of the most used manufacturing processes for the production of plastic products. Its electricity consumption highly influences its cost as well as its environmental impact. Reducing these factors is one of the challenges that material science and production engineering face today. However, there is currently a lack of data regarding electricity consumption values for injection-molding, which leads to significant errors due to the inherent high variability of injection-molding and its configurations. In this paper, an empirical model is proposed to better estimate the electricity consumption and the environmental impact of the injection-molding process. This empirical model was created after measuring the electricity consumption of a wide range of parts. It provides a method to estimate both electricity consumption and environmental impact, taking into account characteristics of both the molded parts and the molding machine. A case study of an induction cooktop housing is presented, showing adequate accuracy of the empirical model and the importance of proper machine selection to reduce cost, electricity consumption, and environmental impact.
Article 3 Reads 2 Citations Influence of Composition on the Environmental Impact of a Cast Aluminum Alloy Patricia Gómez, Daniel Elduque, Judith Sarasa, Carmelo Pina,... Published: 25 May 2016
Materials, doi: 10.3390/ma9060412
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The influence of alloy composition on the environmental impact of the production of six aluminum casting alloys (Al Si12Cu1(Fe), Al Si5Mg, Al Si9Cu3Zn3Fe, Al Si10Mg(Fe), Al Si9Cu3(Fe)(Zn) and Al Si9) has been analyzed. In order to perform a more precise environmental impact calculation, Life Cycle Assessment (LCA) with ReCiPe Endpoint methodology has been used, with the EcoInvent v3 AlMg3 aluminum alloy dataset as a reference. This dataset has been updated with the material composition ranges of the mentioned alloys. The balanced, maximum and minimum environmental impact values have been obtained. In general, the overall impact of the studied aluminum alloys varies from 5.98 × 10−1 pts to 1.09 pts per kg, depending on the alloy composition. In the analysis of maximum and minimum environmental impact, the alloy that has the highest uncertainty is AlSi9Cu3(Fe)(Zn), with a range of ±9%. The elements that contribute the most to increase its impact are Copper and Tin. The environmental impact of a specific case, an LED luminaire housing made out of an Al Si12Cu1(Fe) cast alloy, has been studied, showing the importance of considering the composition. Significant differences with the standard datasets that are currently available in EcoInvent v3 have been found.
Article 4 Reads 1 Citation Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker Sergio Aguado, Jorge Santolaria, David Samper, Jesús Velázqu... Published: 07 April 2016
Applied Sciences, doi: 10.3390/app6040100
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Besides presenting a volumetric verification technique that allows characterization of the different geometric errors of a machine tool (MT) depending on its kinematic chain and geometry through a kinematic model, this paper investigates the influence of measurement tools and techniques available on the final accuracy of the MT. Volumetric verification based on a laser tracker (LT) relates the coordinates of the tool with the coordinates of the LT, including it into the kinematic model. Using a non-lineal optimization process, approximation functions that characterize the joint influence of MT geometric errors are obtained. However, measurement data will be affected by previous compensation of the MT, the accuracy of the measurement system, LT measurement technology, the type of retroreflector used, and techniques used to improve data accuracy, among other sources of errors. This paper studies the adequacy of different commercial alternatives such as: retroreflectors, LTs from different manufacturers, etc., that can be applied in MT verification using a long-range MT. As the accuracy is strongly affected by the uncertainty of its angular encoders, the multilateration technique tries to improve data accuracy using only LT radial information. Nonetheless, a new bundle adjustment which uses radial and angular information is presented in current metrology software. This paper studies both techniques and analyzes their adequacy for MT verification too.
CONFERENCE-ARTICLE 4 Reads 0 Citations Environmental Assessment Design Tool Specially Developed for Mechanical Engineering Students Daniel Elduque, Ana Elduque, Jorge Santolaria, Carlos Javier... Published: 17 November 2014
The 4th World Sustainability Forum, doi: 10.3390/wsf-4-h004
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Over the last two decades, the environmental conscience has been steadily growing. Nowadays a wide range of companies have started to measure the environmental impact of their products performing Life Cycle Assessment in order to reduce it and contribute to sustainable growing. This environmental awareness has also influenced legislation, for example, the European Union has devoted several laws to introduce ecodesign measures in energy-using and energy-related products. However, although most industrial products (TVs, computers, cars...) are designed and developed by engineers, most of them have not received environmental training in their university studies. In order to teach environmental design concepts to mechanical engineering undergraduates, an environmental impact assessment tool has been created. In this paper the ECOCAD software is shown, as commercially LCA software is not prepared to be used by untrained users. ECOCAD allows students to easily analyze the influence of design decisions on the environmental impact of a component, allowing them to compare different materials (steel, aluminum, plastics... each one with different Young Modules and elastic admissible strains), calculating how the safety coefficient changes depending on the loading conditions. Also the environmental impact of manufacturing processes (stamping, plastic injection, thermoforming, die cast, extrusion....), transportation from suppliers, and to the final customers (truck, train, freight ship...), and end-of-life treatments (recycling, incineration, land-filling...) can be taken into account, allowing the students to fully understand how design decisions influence the environmental impact of a product and compare design alternatives.
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