Paper Title:
Material Fatigue Behavior and its Mechanism Based on MMM Technology
  Abstract

In order to investigate material behavior at the stage of early fatigue damage and critical fatigue fracture, a new nondestructive testing called metal magnetic memory (MMM) technology, has been introduced in this paper. The fatigue experiments are carried out on the PQ1-6 rotary bending fatigue machine. The MMM fatigue characteristics are presented and analyzed. It has been found that Hp(x) is increasing up to the peak value while the fatigue crack is initiating and growing. After that peak, Hp(x) decreases gradually with the fatigue crack deepening and stress releasing. The gradual increasing Hp(x) is the sign of the early fatigue damage and the Hp(x) peak predicts the critical fracture state. The validity of MMM results has been certified by microscopic metallographic examination. Furthermore, the MMM fatigue behavior is deduced theoretically based on the dislocation mechanics and fracture mechanics.

  Info
Periodical
Advanced Materials Research (Volumes 146-147)
Edited by
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
Pages
408-411
DOI
10.4028/www.scientific.net/AMR.146-147.408
Citation
H. Y. Xing, D. B. Wu, M. Q. Xu, "Material Fatigue Behavior and its Mechanism Based on MMM Technology", Advanced Materials Research, Vols. 146-147, pp. 408-411, 2011
Online since
October 2010
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Price
$32.00
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