2024-03-29T12:22:29Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00007453
2023-01-16T03:52:58Z
320:321:322
Residual Stress Distribution in the Sub-Surface Region of Shot-Peened Ceramics
ショットピーニングしたセラミックスの表面下の残留応力分布
田中, 啓介
20880
TANAKA, Keisuke
20881
秋庭, 義明
20882
AKINIWA, Yoshiaki
20883
森下, 裕介
20884
MORISHITA, Yusuke
20885
X-Ray Stress Measurement
Residual Stress
Silicon Nitride
Shot Peening
Fracture Toughness
The surface of silicon nitride ceramics was modified by fine particles bombarding (FPB) of high strength steel with 50 μm in diameter and by ultrasonic shot peening (USP) of tungsten carbide shots with 1.1 mm in diameter. The residual stress in the sub-surface region measured by the X-ray diffraction method was compression. For FPB surfaces, the sin^2 ψ diagram was nonlinear, indicating a steep gradient of the residual stress distribution in the sub-surface region. The distribution of the residual stress was determined by the constant-penetration-depth method. The stress on the surface was a large compression of about -1.5 GPa and diminished 5 μm below the surface. The compressive stress increased with the shot pressure for FPB. For USP surfaces, the compressive stress was nearly constant with in the layer of 10 μm and increased up to -1.5 GPa with the peening time. The half value breadth of diffraction profiles increased nearly proportionally with the magnitude of the compressive residual stress. The fracture toughness measured by the Vickers indentation method also increased with the compressive residual stress.
journal article
日本機械学会
2005-12
application/pdf
日本機械学會論文集 A編
712
71
1714
1721
http://hdl.handle.net/2237/9134
0387-5008
https://nagoya.repo.nii.ac.jp/record/7453/files/JsMecEngA_71-712-1714.pdf
jpn
http://ci.nii.ac.jp/naid/110004999139/
日本機械学会
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