2006年
High space-resolutive evaluation of subsurface stress distribution by strain scanning method with analyzer using high-energy synchrotron X-rays
JSME International Journal, Series A: Solid Mechanics and Material Engineering
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- 巻
- 49
- 号
- 3
- 開始ページ
- 376
- 終了ページ
- 381
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1299/jsmea.49.376
The surface aberration effect in the strain scanning method with a Ge analyzer was examined using high- energy X-rays from the undulator synchrotron source. The synchrotron X-rays from the undulator source had an enough intensity for the strain scanning method using a goniometer with the analyzer. The use of a Ge (111) analyzer showed remarkable reduction of the surface aberration effect. However, there still existed the surface aberration or the very-near surface region from the surface to the depth of 50 μm. A correction method was proposed by taking into account of the effects of the divergence of the Ge analyzer, the mis-setting of the analyzer and the X-ray attenuation. The proposed correction method was very useful for eliminating the surface aberration effect. The correction method enables a high space-resolutive evaluation of the subsurface stress distribution. The method was successfully applied to the determination of the residual stress distribution of the shot-peened steel. A precise d0 value of the strain-free lattice spacing necessary was determined from the surface stress measured by the conventional sin2 Ψ method using Cr-Kα radiation.
- リンク情報
- ID情報
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- DOI : 10.1299/jsmea.49.376
- ISSN : 1344-7912
- ISSN : 1347-5363
- SCOPUS ID : 33847310799