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RISS 인기검색어
- 검색키워드
- 저자 : Daniel Elduque (검색결과 3 건)
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Ana Elduque,Daniel Elduque,Isabel Clavería,Carlos Javierre 한국정밀공학회 2018 International Journal of Precision Engineering and Vol.5 No.1
Reducing energy consumption is an important issue for green manufacturing. In this paper, the specific energy consumption (SEC) of the injection molding process is analyzed. Results showed significant variations depending on the injected thermoplastic material and the type of injection molding machine (IMM) suggesting that IMM selection has a high relevance for the efficiency, cost and environmental impact of the process. The manufacturing of 36 plastic parts has been characterized by measuring the electricity consumption and obtaining the environmental impact, being this consumption its most important factor. A descending tendency for both is observed when high throughputs are obtained because the size of the IMM is more optimized. Conversely, the savings obtained by the all-electric IMMs are significant. This research could help engineers to properly select an IMM by taking into account the part weight, material and environmental criteria. Also, this study will be useful for life cycle assessment (LCA) practitioners. Real consumption data is presented, providing details about the materials, and relationships with the IMM that was used. The high variability suggests that if the injection molding process is relevant in a LCA study, its consumption must be analyzed in depth, preferably by measuring real consumptions in the factory.
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Influence of the Material Composition on the Environmental Impact of Ceramic Glasses
Patricia Gómez,Daniel Elduque,Isabel Clavería,Carmelo Pina,Carlos Javierre 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.7 No.2
An exhaustive study of the influence of ceramic glass material composition on the environmental impact has been performed. In order to perform a more accurate calculation of the environmental impact a life cycle assessment (LCA) was implemented using real material composition of ceramic glasses. Employing a sequential X-rays Fluorescence spectrometer, the composition of several ceramic glasses were analyzed, as this information is not published by the manufacturers. The environmental impact results of each ceramic glass were surveyed using EcoInvent v3.4 data, and SimaPro 8.4 software, following ReCiPe Endpoint and Carbon Footprint methodologies. The importance of considering the composition on the LCA is shown, establishing significant differences among the analyzed glasses. Few variations in the quantity of material composition generate high differences on the environmental impact values, demonstrating the high influence of the material composition on the environmental impact. Elements such as tin, lithium, and titanium are the ones that generate the highest contribution on the environmental impact. In contrast, silica sand shows the lowest impact in both methodologies despite it supposes between 58% and 63% of their compositions. Others such as barite and magnesium, together with neodymium emerged in the composition of the studied ceramic glasses as they are considered Critical Raw Materials by the European Union, due to their supply risk and economic importance.
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José Eduardo Galve,Daniel Elduque,Carmelo Pina,Carlos Javierre 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.3
Plastics recycling is becoming a common action to reduce our products and processes’ environmental impact, and it is of the utmost importance to introduce circular economy strategies. However, for most of the different types of thermoplastics, recycling is not currently its usual end of life due to the technical difficulties in the sorting and recycling processes. This paper presents the complete life cycle assessment of an industrial component made with three different thermoplastics; two virgin thermoplastics typically used for similar parts in the market as Polyamide 6 and Polypropylene, and an alternative source of 100% recycled Polypropylene. All life cycle stages are included in the study. After carrying out the life cycle inventory, calculations of the environmental impact of each life cycle steps have been performed with ReCiPe 2016 EndPoint (H/A) v1.03/World and with IPCC 2013 GWP 100a v1.03 methodologies, comparing all three materials under the same conditions. A sensibility assessment has also been performed, calculating a worst-case scenario of the recycled material, and considering higher material acquisition distances. This study shows that recycled Polypropylene contributes to reducing the overall environmental impact of the component life cycle by 29.8% under ReCiPe, and by 42.8% under Carbon Footprint when compared to virgin Polypropylene. For the worst-case scenario, these reductions in the environmental impact of the component life cycle are also significant: 23.2% and 36.4%, respectively, showing that the use of recycled polymers is a key approach to reduce the environmental impact of plastic components
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