707 SPC試験でのクリープ破壊と寿命推定(OS13(2) エネルギー機器構造物の劣化現象の理解と健全性評価)

概要

論文の詳細を見る
A new testing apparatus to evaluate creep lives is newly developed using very small disc specimens: Small Punch Creep (SPC). Creep rupture lives obtained at SPC tests have a good relationship with those from conventional creep tests. A series of interrupted SPC tests are performed to investigate the deformation and rupture process. The thickness at the center of the disc rapidly decreases at the loading, and gradually decreases till rupture due to the friction between the disc and a loading ball. Creep cracks which lead to rupture initiate around the last point of contact of the loading ball and disc. Observations at sections of discs in interrupted SPC tests show that the shear stress dominates the rupture of SPC specimens.
一般社団法人日本機械学会の論文
2006-08-03