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Title: Development Of Fatigue Limit Analysis Diagram
Author: F Takahashi, K Ando, K TAKAHASHI, H OKADA, M Oohas
Source: Conf Proc: ICSP-10 Tokyo, Japan 2008
Publication year 2008
Document number: 2008047
Number of pages: 6
Abstract:
ABSTRACT
Development of Fatigue Limit Analysis Diagram: FLAD was conducted to estimate the fatigue limit of materials with a surface defect like a surface flaw. To make the FLAD, new
criterion of cyclic plastic zone, based on Dugdale model, and cyclic Crack Tip Opening Displacement : CTOD, were proposed. The FLAD in this study considers the effect of
stress ratio. Therefore, assuming the residual stress as the stress ratio, the shot peening effect was considered. The FLAD using new criterion was compared with literature
data. As a result, the proposed FLAD concurred with experimental data despite differences in materials and stress ratios.
KEY WORDS
Fracture analysis diagram, Plastic zone, Crack tip opening displacement, Shot peening, Stress ratio
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