Backscatter absorption spectroscopy for process monitoring in powder bed fusion

Author:

Beuting MatthiasORCID,Fairhall Alex J.,Goldsmith Randall H.ORCID,Chen Lianyi,Sanders Scott T.

Abstract

Laser powder bed fusion is a metal 3D printing technology that involves melting and solidifying a metal powder using a process laser or electron beam. The interaction of metal vapors with the melt pool is known to cause manufacturing defects. Here we use absorption spectroscopy of laser light reflected from the liquid metal surface to measure atomic Ti vapor during processing of Ti-6Al-4 V inside the vapor cavity forming in the melt pool. The absorption line strength and shape were found to vary significantly with processing parameters. In addition, laser-induced fluorescence (LIF) was observed, providing further opportunities for in situ diagnostics.

Funder

National Defense Science and Engineering Graduate

National Institute of Health

National Institute of Standards and Technology

Publisher

Optica Publishing Group

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3