Detecting Fatigue Crack Initiation by Strain Interference Method. (IV). Monitoring Fatigue Crack Initiation by Strain Information.
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- MAKABE Chobin
- Dept. of Mech. Systems Eng., Univ. of Ryukyus
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- NISHIDA Shin-ichi
- Dept. of Mech. Eng., Saga Univ.
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- KANESHIRO Hideo
- Dept. of Mech. Systems Eng., Univ. of Ryukyus
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- URASHIMA Chikayuki
- Nippon Steel Corp., Yawata R & D Lab.
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- TAKARA Kazuo
- Dept. of Mech. Systems Eng., Univ. of Ryukyus
Bibliographic Information
- Other Title
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- ひずみ干渉法による疲労き裂発生の検知について (第4報) ひずみ情報による疲労き裂発生の検知について
- ヒズミ ジョウホウ ニ ヨル ヒロウ キレツ ハッセイ ノ ケンチ ニ ツイテ
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Abstract
Usually, the fracture accident of a machine equipment originates in the notched section. However, it is very difficult to monitor the fatigue crack initiation for all parts of the machine equipment. In this study, a method of detecting and monitoring fatigue crack initiation in the notched section of running machine equipment is proposed. Fatigue crack initiation can easily be detected by the observation and analysis of the waveform of the strain function composed of the strains in the vicinity of the notch, because the waveform of the strain changes its shape after the crack initiation. In the present study, the crack initiation under the constant or fluctuating stress amplitude was monitored using the specimen with a small hole. It was found that the crack initiation can be detected when the crack length reaches about 1mm.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 42 (481), 1224-1230, 1993
The Society of Materials Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680368138240
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- NII Article ID
- 110002299040
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 3846398
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed