{"title":"利用光学断层扫描技术对激光粉末床融合表面进行原位表面粗糙度评估","authors":"Cagdas Sen , Gokhan Sail , Levent Subasi , Soner Oren , Gokhan Dursun , Akin Orhangul","doi":"10.1016/j.procir.2024.05.064","DOIUrl":null,"url":null,"abstract":"<div><p>Laser powder bed fusion (LPBF) is an additive manufacturing technique that enables significant design freedom and high-complexity part production. However, the process requires unconventional analysis methods for surface characterization due to process-induced variations. One possible technique is to use in-situ optical tomography (OT) technique for quality control of LPBF surfaces during fabrication. In-situ characterization approach would enable better first time yield and inspection possibility of inner channels without the need of destructive testing. In this study, samples with varied angles and process parameters are produced by LPBF. Camera images are collected during the production per every process layer using the optical-tomography system. These OT images are interpreted to obtain roughness estimates of sample overhanging surfaces. OT roughness outputs are analyzed and correlated with optical coherence scanning interferometry (CSI) measurements. The relationship between OT surface roughness estimates and optical measurements for different process parameters are presented. The possibility of using an in-situ surface analysis method for the characterization of LPBF surfaces is discussed.</p></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2212827124002683/pdf?md5=3afad6624061bc45d1952651346fbe6a&pid=1-s2.0-S2212827124002683-main.pdf","citationCount":"0","resultStr":"{\"title\":\"In-situ surface roughness evaluation of laser powder bed fusion surfaces using optical tomography\",\"authors\":\"Cagdas Sen , Gokhan Sail , Levent Subasi , Soner Oren , Gokhan Dursun , Akin Orhangul\",\"doi\":\"10.1016/j.procir.2024.05.064\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Laser powder bed fusion (LPBF) is an additive manufacturing technique that enables significant design freedom and high-complexity part production. However, the process requires unconventional analysis methods for surface characterization due to process-induced variations. One possible technique is to use in-situ optical tomography (OT) technique for quality control of LPBF surfaces during fabrication. In-situ characterization approach would enable better first time yield and inspection possibility of inner channels without the need of destructive testing. In this study, samples with varied angles and process parameters are produced by LPBF. Camera images are collected during the production per every process layer using the optical-tomography system. These OT images are interpreted to obtain roughness estimates of sample overhanging surfaces. OT roughness outputs are analyzed and correlated with optical coherence scanning interferometry (CSI) measurements. The relationship between OT surface roughness estimates and optical measurements for different process parameters are presented. The possibility of using an in-situ surface analysis method for the characterization of LPBF surfaces is discussed.</p></div>\",\"PeriodicalId\":20535,\"journal\":{\"name\":\"Procedia CIRP\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2212827124002683/pdf?md5=3afad6624061bc45d1952651346fbe6a&pid=1-s2.0-S2212827124002683-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Procedia CIRP\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2212827124002683\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Procedia CIRP","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2212827124002683","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
激光粉末床熔融(LPBF)是一种增材制造技术,可实现极大的设计自由度和高复杂性零件生产。然而,由于工艺引起的变化,该工艺需要非常规的表面表征分析方法。一种可行的技术是在制造过程中使用原位光学断层扫描(OT)技术对 LPBF 表面进行质量控制。原位表征方法可提高首次成品率和内通道检测的可能性,而无需进行破坏性测试。本研究采用 LPBF 制作不同角度和工艺参数的样品。在生产过程中,使用光学层析成像系统采集每个工艺层的相机图像。对这些 OT 图像进行解释,以获得样品悬挂表面的粗糙度估计值。OT 粗糙度输出与光学相干扫描干涉测量法 (CSI) 测量结果进行分析和关联。介绍了不同工艺参数下 OT 表面粗糙度估计值与光学测量值之间的关系。讨论了使用原位表面分析方法表征 LPBF 表面的可能性。
In-situ surface roughness evaluation of laser powder bed fusion surfaces using optical tomography
Laser powder bed fusion (LPBF) is an additive manufacturing technique that enables significant design freedom and high-complexity part production. However, the process requires unconventional analysis methods for surface characterization due to process-induced variations. One possible technique is to use in-situ optical tomography (OT) technique for quality control of LPBF surfaces during fabrication. In-situ characterization approach would enable better first time yield and inspection possibility of inner channels without the need of destructive testing. In this study, samples with varied angles and process parameters are produced by LPBF. Camera images are collected during the production per every process layer using the optical-tomography system. These OT images are interpreted to obtain roughness estimates of sample overhanging surfaces. OT roughness outputs are analyzed and correlated with optical coherence scanning interferometry (CSI) measurements. The relationship between OT surface roughness estimates and optical measurements for different process parameters are presented. The possibility of using an in-situ surface analysis method for the characterization of LPBF surfaces is discussed.