Subsurface Defect Evaluation of Selective-Laser-Melted Inconel 738LC Alloy Using Eddy Current Testing for Additive/Subtractive Hybrid Manufacturing

Guo, Sai1,2; Ren, Guanhui1; Zhang, Bi1

2021-12-01

10.1186/s10033-021-00633-9

Chinese Journal of Mechanical Engineering   影响因子和分区

1000-9345

2192-8258

New materials and manufacturing technologies require applicable non-destructive techniques for quality assurance so as to achieve better performance. This study comprehensively investigated the effect of influencing factors including excitation frequency, lift-off distance, defect depth and size, residual heat, and surface roughness on the defect EC signals of an Inconel 738LC alloy produced by selective laser melting (SLM). The experimental investigations recorded the impedance amplitude and phase angle of EC signals for each defect to explore the feasibility of detecting subsurface defects by merely analyzing these two key indicators. Overall, this study revealed preliminary qualitative and roughly quantitative relationships between influencing factors and corresponding EC signals, which provided a practical reference on how to quantitively inspect subsurface defects using eddy current testing (ECT) on SLMed parts, and also made solid progress toward on-line ECT in additive/subtractive hybrid manufacturing (ASHM) for fabricating SLMed parts with enhanced quality and better performance.

Eddy current testing Subsurface defect Additive subtractive hybrid manufacturing Selective laser melting Inconel 738LC alloy

SCI ; EI

英语

第一 ; 通讯

Basic Research Project of Science and Technology Plan of Shenzhen[JCYJ20170817111811303]

Engineering

Engineering, Mechanical

WOS:000720724500001

SPRINGER

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen, Guangdong, Peoples R China
2.Hong Kong Polytech Univ, Dept Ind & Syst Engn, State Key Lab Ultraprecis Machining Technol, Kowloon, Hong Kong, Peoples R China

Guo, Sai,Ren, Guanhui,Zhang, Bi. Subsurface Defect Evaluation of Selective-Laser-Melted Inconel 738LC Alloy Using Eddy Current Testing for Additive/Subtractive Hybrid Manufacturing[J]. Chinese Journal of Mechanical Engineering,2021,34(1).

Guo, Sai,Ren, Guanhui,&Zhang, Bi.(2021).Subsurface Defect Evaluation of Selective-Laser-Melted Inconel 738LC Alloy Using Eddy Current Testing for Additive/Subtractive Hybrid Manufacturing.Chinese Journal of Mechanical Engineering,34(1).

Guo, Sai,et al."Subsurface Defect Evaluation of Selective-Laser-Melted Inconel 738LC Alloy Using Eddy Current Testing for Additive/Subtractive Hybrid Manufacturing".Chinese Journal of Mechanical Engineering 34.1(2021).