Evaluation of fatigue damage using a magnetic measurement technique

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/20.800727· OSTI ID:20000832

Lo, C C.H.; Tang, F; Jiles, D C; Biner, S B

A series of strain-controlled fatigue tests were performed on 0.1wt% C Fe-C alloy samples under different strain amplitudes. The measured coercivity of these samples was found to behave differently in the initial and final stages of fatigue. In the intermediate stage of fatigue it was found that coercivity tended to increase, while initial and maximum permeabilities tended to decrease. This could be related to the changes in the surface structure which were observed by SEM. The present results indicate that hysteresis parameters are related to the accumulation of fatigue damage, and therefore it is possible to develop a magnetic measurement technique for monitoring fatigue damage in steel components.

• Research Organization: Ames Lab., IA (US)
• Sponsoring Organization: USDOE; National Science Foundation (NSF)
• OSTI ID: 20000832
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers), Vol. 35, Issue 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
FATIGUE
MAGNETIC TESTING
MICROSTRUCTURE
COERCIVE FORCE
HYSTERESIS
STEELS