Paper Title:
Acoustic Emission Behavior during Fatigue Crack Propagation in 304 Stainless Steel
  Abstract

This study investigated acoustic emission behavior during fatigue crack growth test under constant and variable amplitude loading in 304 stainless steel. To describe the acoustic emission behavior, counts rate(dη/dn) was related with stress intensity factor range (SIFR, ΔK) in log-log plot. As a result of test, the relationship was represented a curve, which forms rise and fall behavior in counts rate as the SIFR increases. AE response to a single overload was sudden drop and slow recovery in counts rate, which was similar to crack growth retardation behavior. Under block loading, counts rate of each loading block was same as that of constant amplitude loading. Overall experimental results indicated that stress intensity factor controls the counts rate (dη/dn) as well as crack growth rate (da/dn) regardless of load range or crack length.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1325-1330
DOI
10.4028/www.scientific.net/KEM.261-263.1325
Citation
K. H. Oh, C.K. Jung, Y.C. Yang, K. S. Han, "Acoustic Emission Behavior during Fatigue Crack Propagation in 304 Stainless Steel", Key Engineering Materials, Vols. 261-263, pp. 1325-1330, 2004
Online since
April 2004
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Price
$32.00
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