Evaluation of Dislocation Behavior Due to Fatigue Damage Using Ultrasonic Spectroscopy.
Bibliographic Information
- Other Title
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- 疲労損傷に伴う転位挙動の超音波スペクトロスコピーによる評価
- ヒロウ ソンショウ ニ トモナウ テンイ キョドウ ノ チョウオンパ スペクトロスコピー ニ ヨル ヒョウカ
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Abstract
The dislocation behavior, i.e. density of mobile dislocation and eigen-frequency of dislocation strings, are closely related to fatigue damage of materials. We can estimate the density of mobile dislocation under fatigue process by measuring ultrasonic wave velocities with three-different propagating frequencies via Granato-Lucke's dislocation string theory. In the present paper, the correlation of the mobile dislocation density with fatigue damages both of aluminum alloy and chromium-molybdenum alloy steels was examined. The results obtained are as follows. The ultrasonic wave velocities with three-different propagating frequencies (5, 10 and 15 MHz) decreased due to increasing of number of fatigue cycles in the both cases of aluminum alloy and chromium-molybdenum alloy steel. The density of mobile dislocation in the both cases estimated by Granato-Lucke's model increased in the fatigue damage progress.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 68 (675), 1533-1539, 2002
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001204446535040
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- NII Article ID
- 110002378123
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- NII Book ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- NDL BIB ID
- 6365926
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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