Flaw detection for microcrack in spring steel and estimation of crack shape with eddy current testing

2019 ◽  
Vol 59 (4) ◽  
pp. 1267-1274 ◽  
Author(s):  
Katsuhiro Fukuoka ◽  
Ryo Hasegawa
Keyword(s):  
Eddy Current ◽  
Flaw Detection ◽  
Spring Steel ◽  
Eddy Current Testing ◽  
Current Testing ◽  
Crack Shape

Optimized design of flaw detection method based on pulsed eddy current testing

2021 ◽  
Author(s):  
Xianwei Wu ◽  
Yifan Chen ◽  
Jialing Huang ◽  
Xue Li ◽  
Chenke Yin ◽  
...  
Keyword(s):  
Eddy Current ◽  
Detection Method ◽  
Flaw Detection ◽  
Eddy Current Testing ◽  
Optimized Design ◽  
Current Testing ◽  
Pulsed Eddy Current

Crack shape identification arising in eddy current testing by multi coil probes

2003 ◽  
Vol 2003.16 (0) ◽  
pp. 649-650
Author(s):  
Fumio KOJIMA ◽  
Nobuhiro KAWAI ◽  
Futoshi KOBAYASI ◽  
Akira NISHIMIZU ◽  
Masahiro KOIKE ◽  
...  
Keyword(s):  
Eddy Current ◽  
Eddy Current Testing ◽  
Shape Identification ◽  
Current Testing ◽  
Crack Shape

Quantitative Analysis of Transverse Cracking of Rail Using Eddy Current Non-Destructive Testing

2012 ◽  
Vol 249-250 ◽  
pp. 70-75
Author(s):  
Zeng Lu Song ◽  
Tsutomu Yamada ◽  
Hideki Shitara ◽  
Yasushi Takemura
Keyword(s):  
Finite Element ◽  
Quantitative Analysis ◽  
Eddy Current ◽  
Transverse Crack ◽  
Flaw Detection ◽  
Element Model ◽  
Eddy Current Testing ◽  
Future Research ◽  
Transverse Cracks ◽  
Current Testing

In this study, we analyzed transverse cracks in rails using eddy current testing. Quantitative analysis was performed on transverse crack defect signals ascertained by actual flaw detection and finite element simulation of the rail that had developed a central transverse crack. The conductivity and width of the finite element model were equivalent to those of the actual rail. By analyzing the distribution of eddy current on the rail surface, the relationship between the variation in the density of eddy current and size of transverse crack was obtained. Experimental and simulation results indicated that the application of eddy current testing in quantitative analysis of a rail flaw was feasible and would be a valuable reference in future research.

Evaluation of eddy current signatures for predicting different heat treatment effects in chromium–vanadium (CrV) spring steel

2015 ◽  
Vol 231 (3) ◽  
pp. 259-271 ◽  
Author(s):  
Javeria Hashmi ◽  
Mahmood Khan ◽  
Mushtaq Khan ◽  
Syed Husain Imran Jaffery ◽  
Liaqat Ali ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Eddy Current ◽  
Spring Steel ◽  
Eddy Current Testing ◽  
Test Method ◽  
Current Testing ◽  
Frequency Optimization ◽  
Current Signatures ◽  
Quenching And Tempering ◽  
Normalizing Annealing

The nondestructive test method (eddy current) was employed to study the effect of different heat treatment cycles (normalizing, annealing, quenching, and tempering) on chromium–vanadium (CrV) spring steel. The calibration of eddy current setup was carried out as per ASTM E566 and frequency optimization for the evaluation of heat treatment was carried out in absolute mode using shielded eddy current testing core probe. The eddy current signatures successfully distinguished the effect of different heat treatments cycles and variation in hardness for CrV samples. Scanning electron microscopy images confirmed the different microstructures as predicted by the eddy current testing.

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