3609 ストッピングホールからのき裂発生の抑制手法について(S13-2 疲労き裂,S13 実用構造材料の疲労問題と健全性評価)

概要

論文の詳細を見る
Drilling a hole at crack tip is one of the methods for arresting crack growth. This hole is called stopping hole. Some application studies for arresting crack growth were performed and the improvement of fatigue life of cracked material was shown. In the present study, also, the arresting method of crack growth was investigated with drilling plural holes at crack tips and in the vicinity of the crack tips. In some cases of drilling positions of holes, fatigue life became longer than the case that stopping holes only were drilled. This is related to the decreasing stress concentration at the stopping hole edges.
社団法人日本機械学会の論文
2006-09-15