Electrical Potential Drop and Notch Opening Displacement Methods for Detecting High Temperature Low Cycle Fatigue Cracks of Circumferential Notched Specimens

Author:

Sakane Masao1,Ohnami Masateru1

Affiliation:

1. Department of Mechanical Engineering, Ritsumeikan University, 56-1 Tojiin Kita-machi Kita-ku, Kyoto, 603, Japan

Abstract

This paper assesses the accuracy of the crack initiation detection methods for type 304 SS circumferential notched specimens subjected to strain and stress controlled low cycle fatigue loads at 873 K in air. The methods examined were DC potential drop method (PDM) and the maximum stress criterion in the strain controlled test while they were DC potential drop method and the minimum notch opening displacement method (NOD) in the stress controlled test. The DC potential method and the minimum notch opening displacement method were proved to have a sufficient accuracy for the detection of crack initiation while the maximum stress criterion has less accuracy. The crack length detection based on DC potential drop method is also discussed.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Cited by 10 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Potential difference methods for measuring crack growth: A review;International Journal of Fatigue;2020-07

2. Notch effect on multiaxial low cycle fatigue;International Journal of Fatigue;2011-08

3. Notch effect on creep–fatigue life for Sn–3.5Ag solder;Engineering Fracture Mechanics;2011-05

4. Notch Effect on Multiaxial Low Cycle Fatigue Life for Mod.9Cr-1Mo Steel;Journal of the Society of Materials Science, Japan;2011

5. Notch Effect on Low Cycle Fatigue of Sn–3.5Ag Solder;Journal of Engineering Materials and Technology;2007-12-20

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