用于局部测量有效层厚、粉末床密度和体积能量密度的新实验方法，以增强金属激光粉末床熔融效果

IF 10.3 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Additive manufacturing Pub Date : 2024-08-05 DOI:10.1016/j.addma.2024.104432

Filippo Zanini, Nicolò Bonato, Simone Carmignato

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引用次数: 0

摘要

这项工作提出了一种同时测量有效层厚度、粉末床密度和体积能量密度的实验方法，有助于改进工艺动态分析并提高金属激光粉末床熔化的精度。该方法基于一个特殊的构建平台，包括具有参考几何形状的可移动插入件和高分辨率 X 射线计算机断层扫描。对层厚度和能量密度的局部变化进行评估，并将其作为工艺稳定性和能量传输效率的指标。通过对粉末床层密度的上下文测量，还可以深入了解与工艺相关的潜在影响因素，如飞溅形成和变性。

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New experimental approach for local measurements of effective layer thickness, powder bed density and volumetric energy density to enhance metal laser powder bed fusion

This work presents an experimental approach for simultaneous measurements of effective layer thickness, powder bed density, and volumetric energy density, useful to improve the analysis of process dynamics and enhance precision in metal laser powder bed fusion. The approach is based on a special building platform, including removable inserts with reference geometries, and high-resolution X-ray computed tomography. The local variability in layer thickness and energy density are evaluated and used as indicators of process stability and energy transmission efficiency. The contextual measurement of powder bed density offers additional insights into potential process-related influences such as spatter formation and denudation.

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来源期刊

Additive manufacturing Materials Science-General Materials Science

CiteScore

19.80

自引率

12.70%

发文量

648

审稿时长

35 days

期刊介绍： Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.