Error and limit determination for dimensional measurements of thin-walled structures with industrial computed tomography
CHEN Zi-mu1,2,3, HU Zheng-wei1,2,3, WANG Qian-ni1,2,3, SHI Yi-wei1,2,3
1. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
2. Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing 100095, China;
3. Key Laboratory of Aeronautical Materials Testing and Evaluation, Aero Engine Corporation of China, Beijing 100095, China
Abstract:Due to the high-accuracy requirement of dimensional measurements for thin-walled structures of additive manufacturing products, the grayscale distribution of the industrial CT image and the location of the structural boundaries in the image space were derived. In addition, the validity of the half-height-width method and the maximum gradient method was compared and analyzed, and the limit of the dimensional measurement based on CT imaging was calculated. The thin-walled structures with different thicknesses were calibrated, and measured by industrial CT scanning and imaging experiment. The results show that the half-height-width method generates a smaller error compared with the maximum gradient method, when the thickness of the thin-walled structures is larger than the measurement limit of the CT system. Finally, the measurement limit can be obtained by numerical simulations based on the edge spread function with experimental measurements.
陈子木, 胡正伟, 王倩妮, 史亦韦. 薄壁结构工业CT尺寸测量误差与极限[J]. 材料工程, 2020, 48(8): 169-176.
CHEN Zi-mu, HU Zheng-wei, WANG Qian-ni, SHI Yi-wei. Error and limit determination for dimensional measurements of thin-walled structures with industrial computed tomography. Journal of Materials Engineering, 2020, 48(8): 169-176.
[1] 凌松. 增材制造技术及其制品的无损检测进展[J]. 无损检测,2016,38(6):60-64. LING S. Additive manufacture technique and related NDT for its products[J]. Nondestructive Testing, 2016, 38(6):60-64.
[2] 杨平华,高祥熙,梁菁,等. 金属增材制造技术发展动向及无损检测研究进展[J]. 材料工程,2017,45(9):13-21. YANG P H, GAO X X, LIANG J, et al. Development tread and NDT progress of metal additive manufacture technique[J]. Journal of Materials Engineering, 2017, 45(9):13-21.
[3] 张学军,唐思熠,肇恒跃,等. 3D打印技术研究现状和关键技术[J]. 材料工程,2016,44(2):122-128. ZHANG X J, TANG S Y, ZHAO H Y, et al. Research status and key technologies of 3D printing[J]. Journal of Materials Engineering, 2016, 44(2):122-128.
[4] THOMPSON A, MASKERY I, LEACH R K. X-ray computed tomography for additive manufacturing:a review[J]. Measurement Science & Technology, 2016, 27(7):072001.
[5] NTIVEROS S, YAGUE J A, JIMENEZ R, et al. Computer tomography 3D edge detection comparative for metrology applications[J]. Procedia Engineering, 2013, 63:710-719.
[6] MULLER P, CANTATORE A, ANDREASEN J L, et al. Computed tomography as a tool for tolerance verification of industrial parts[J]. Procedia CIRP, 2013, 10:125-132.
[7] MAIRE E, WITHERS P J. Quantitative X-ray tomography[J]. International Materials Reviews, 2017, 59(1):1-43.
[8] DE CHIFFRE L, CARMIGNATO S, KRUTH J P, et al. Industrial applications of computed tomography[J]. CIRP Annals-Manufacturing Technology, 2014, 63(2):655-677.
[9] ALOISI V, CARMIGNATO S. Influence of surface roughness on X-ray computed tomography dimensional measurements of additive manufactured parts[J]. Case Studies in Nondestructive Testing and Evaluation, 2016, 6:104-110.
[10] TAN Y, KIEKENS K, WELKENHUYZEN F, et al. Simulation-aided investigation of beam hardening induced errors in CT dimensional metrology[J]. Measurement Science & Technology, 2014, 25(6):064014.
[11] ANTONDU P, STEPHAN G R, JOHAN E, et al. Application of micro CT to the non-destructive testing of an additive manufactured titanium component[J]. Case Studies in Nondestructive Testing & Evaluation, 2015, 4:1-7.
[12] TOWNSEND A, PAGANI L, SCOTT P, et al. Areal surface texture data extraction from X-ray computed tomography reconstructions of metal additively manufactured parts[J]. Precision Engineering, 2017, 48:254-264.
[13] DEWULF W, KIEKENS K, TAN Y, et al. Uncertainty determination and quantification for dimensional measurements with industrial computed tomography[J]. CIRP Annals-Manufacturing Technology, 2013, 62(1):535-538.
[14] VAN BAEL S, KERCKHOFS G, MOESEN M, et al. Micro-CT-based improvement of geometrical and mechanical controllability of selective laser melted Ti6Al4V porous structures[J]. Materials Science and Engineering:A,2011,528(24):7423-7431.
[15] 王义旭,施玉书,高思田,等. 工业CT探测尺寸误差的校准及误差分析[J]. 计量学报,2014,35(3):216-220. WANG Y X, SHI Y S, GAO S T, et al. Calibration and analysis for probing size error of industrial CT[J]. Acta Metrologica Sinica, 2014, 35(3):216-220.