Teja Bizjak Govedič, Daša Krapež Tomec, Manja Kitek Kuzman, L. Oblak, B. Glavonjić
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引用次数: 0
Abstract
In recent years, additive manufacturing has become a regular process in various industries, and consequently there is an increasing need to evaluate the environmental aspects of this technology and its associated materials. In this paper, comparative cradle-to-grave life cycle assessments between a conventional product and a 3D-printed alternative made of polylactic acid (PLA) and PLA-wood material were investigated based on the standard ISO 14044:2006. The environmental impact of each product was quantified for 18 categories. The goal of life cycle assessment (LCA) was to determine whether the use of 3D printed PLA/PLA-wood products can be a sustainable alternative to traditional metal products. The paper presents a case study in which a comparative LCA was conducted. The results show that a metal part manufactured using conventional subtractive processes (milling, drilling, welding, etc.) has a higher environmental impact compared to 3D-printed alternatives made from renewable materials. However, there are many sub-issues that need to be adequately addressed.
近年来，增材制造已成为各行各业的常规工艺，因此越来越有必要对该技术及其相关材料的环境方面进行评估。本文根据 ISO 14044:2006 标准，对传统产品与由聚乳酸（PLA）和聚乳酸木质材料制成的 3D 打印替代产品进行了 "从摇篮到坟墓 "生命周期比较评估。每种产品对环境的影响被量化为 18 个类别。生命周期评估（LCA）的目的是确定使用三维打印聚乳酸/聚乳酸木材产品能否成为传统金属产品的可持续替代品。本文介绍了一项进行生命周期评估比较的案例研究。结果表明，使用传统减法工艺（铣削、钻孔、焊接等）制造的金属零件与使用可再生材料制造的 3D 打印替代品相比，对环境的影响更大。然而，还有许多子问题需要充分解决。
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