2024-03-29T12:12:53Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00007472
2023-01-16T03:52:58Z
320:321:322
防振ゴム材料における疲労き裂進展挙動へのJ 積分の適用
J-Integral Approach to Fatigue Crack Propagation in Vulcanized Natural Rubber
田中, 啓介
TANAKA, Keisuke
秋庭, 義明
AKINIWA, Yoshiaki
來海, 博央
KIMACHI, Hirohisa
伊藤, 和之
ITOH, Kazuyuki
open access
日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである。
Fatigue Crack Propagation
Fracture Mechanics
Rubber
J Integral
Smooth Specimen
Natural Defect
Artificial Surface Defect
Through-thickness Crack
Fatigue tests of vulcanized natural rubber were conducted under displacement-controlled conditions. The specimens were of three types: smooth specimen, specimen with an artifical surface defect of 0.2 mm in diameter, and specimen with an artifical through-thickness defect of 2 mm in length. In smooth specimens, a fatigue crack started from natural defects of about 0.15 mm in size, and grew as an internal crack, and then became a through-thickness crack. The spring constant of the specimen decreased slowly in the range of about 80% of the total life (Stage A), followed by a rapid decrease (Stage B). The transition from Stage A to B took place when a crack penetrated through the thickness. The rate of fatigue crack propagation is expressed as a second-power function of the J-integral range both for surface cracks and through-thickness cracks. The J-integral was evaluated from the crack-center opening displacement.
日本機械学会
2003-04
jpn
journal article
VoR
http://hdl.handle.net/2237/9154
https://nagoya.repo.nii.ac.jp/records/7472
http://ci.nii.ac.jp/naid/110002370370/
0387-5008
日本機械学會論文集 A編
69
680
758
765
https://nagoya.repo.nii.ac.jp/record/7472/files/JsMecEngA_69-680-758.pdf
application/pdf
1.1 MB
2018-02-19