Crack propagation analysis and fatigue life prediction for structural alloy steel based on metal magnetic memory testing

2018 ◽  
Vol 462 ◽  
pp. 144-152 ◽  
Author(s):  
Chen Ni ◽  
Lin Hua ◽  
Xiaokai Wang
Keyword(s):  
Fatigue Life ◽  
Crack Propagation ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Magnetic Memory ◽  
Memory Testing ◽  
Metal Magnetic Memory ◽  
Structural Alloy ◽  
Propagation Analysis ◽  
Metal Magnetic Memory Testing

Short Crack Propagation Law and Fatigue Life Prediction Method for Structural Alloy Steel

2011 ◽  
Vol 197-198 ◽  
pp. 1400-1405
Author(s):  
Zan Zhi Wang
Keyword(s):  
Fatigue Life ◽  
Crack Initiation ◽  
Crack Propagation ◽  
Life Prediction ◽  
Prediction Method ◽  
Short Crack ◽  
Fatigue Life Prediction ◽  
Structural Alloy ◽  
Propagation Law ◽  
Alloy Steels

35CrMo and 42CrMo are the two main structural alloy steels in China, and are widely used in making important structural components subjected to heavy loads. In order to search after their fatigue properties under cyclic loads, 33 specimens were tested, under different stress level and different stress ratio from each other, to observe their crack initiation lives and the failure lives, together with the growing short crack lengths at various cycles. All tests were conducted using the MTS 810-22 material testing system. Based on the results from the tests, the relationships between the maximum stress range at crack tip and the number of cycles prior to crack initiation were determined, and in the meanwhile, the small crack propagation laws and the threshold stresses for fatigue crack initiation were obtained. In the end, the fatigue life prediction method for the two structural alloy steels was carried out.

scholarly journals Stress measurement using magnetic Barkhausen noise and metal magnetic memory testing

2010 ◽  
Vol 21 (5) ◽  
pp. 055703 ◽  
Author(s):  
Ping Wang ◽  
Shougao Zhu ◽  
Gui Yun Tian ◽  
Haitao Wang ◽  
John Wilson ◽  
...  
Keyword(s):  
Stress Measurement ◽  
Barkhausen Noise ◽  
Magnetic Memory ◽  
Memory Testing ◽  
Metal Magnetic Memory ◽  
Magnetic Barkhausen Noise ◽  
Metal Magnetic Memory Testing

Magnetic crawler climbing detection robot basing on metal magnetic memory testing technology

2020 ◽  
Vol 125 ◽  
pp. 103439 ◽  
Author(s):  
Fumin Gao ◽  
JianChun Fan ◽  
Laibin Zhang ◽  
Jiankang Jiang ◽  
Shoujie He
Keyword(s):  
Magnetic Memory ◽  
Memory Testing ◽  
Metal Magnetic Memory ◽  
Testing Technology ◽  
Metal Magnetic Memory Testing

scholarly journals Characteristics of Metal Magnetic Memory Testing of 35CrMo Steel during Fatigue Loading

Metals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 119 ◽  
Author(s):  
Zhibin Hu ◽  
Jianchun Fan ◽  
Shengnan Wu ◽  
Haoyuan Dai ◽  
Shujie Liu
Keyword(s):  
Fatigue Loading ◽  
Magnetic Memory ◽  
Memory Testing ◽  
Metal Magnetic Memory ◽  
35Crmo Steel ◽  
Metal Magnetic Memory Testing

Eddy Current and Metal Magnetic Memory Testing Nondestructive Evaluation for Superficial Defects of Old Cylinder Barrel

2016 ◽  
Vol 850 ◽  
pp. 107-112
Author(s):  
Chang Liang Shi ◽  
Shi Yun Dong ◽  
Wei Xue Tang ◽  
Hao Zhan
Keyword(s):  
Stress Concentration ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
Magnetic Memory ◽  
Memory Testing ◽  
Metal Magnetic Memory ◽  
Current Testing ◽  
Cylinder Barrel ◽  
Metal Magnetic Memory Testing

Eddy current testing and metal magnetic memory testing, cooperated with special testing devices, were applied to detect the superficial defects of old cylinder barrel. It was indicated that there were three types of the signals, which were non-defect signals, discontinuous peak signals and continuous peak signals. Non-defect signals indicated that there was no defect in cylinder barrel, and the discontinuous peak signals denoted that there was circumferential cracking, and the continuous peak signals showed that there was longitudinal cracking in the surface of cylinder barrel. The amplitude of eddy current testing signals characterizes the depth of cracking, and the gradient of magnetic signals descript the degree of stress concentration. The method mentioned above detects the cracking and stress concentration in the superficial coat of old cylinder barrel, which effectively guarantee the quality of automobile cylinder.

Analysis of Metal Magnetic Memory Testing Technology

2012 ◽  
Vol 503-504 ◽  
pp. 1623-1626
Author(s):  
Guo Min Lin ◽  
Hang Yun Lin ◽  
Kai Dong
Keyword(s):  
Memory Effect ◽  
Magnetic Memory ◽  
Memory Testing ◽  
Metal Magnetic Memory ◽  
Testing Technology ◽  
Metal Magnetic Memory Testing

The magnetic memory effect and the principle of magnetic memory testing are described; The phenomenon of the magnetostriction is discussed. An instance is used with detail to analysis of the effect and mechanism of metal magnetic memory testing technology. Some opinions about the further work needs to be done in this area are given finally.

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