423 アルミニウム合金の単一引張り大荷重負荷後のき裂進展特性と遅延繰返し数に及ぼす試験片形状の影響(OS3-1 圧電応力,熱応力の特異性の解析と実験,OS3 圧電応力,熱応力の特異性の解析と実験)
詳細
Fatigue delay cycles and crack propagation behavior after a single tensile overload were investigated using two different specimens, the compact tension specimen (CT) and the center cracked panel specimen (CCP). Differences in the delay behavior between CT and CCP specimens were observed at the higher R ratio region, R>0.7. In the former, the delay cycles increased with an increase of R ratio at the higher R ratio region. While in the latter, the delay cycles decreased at the region. Mechanism for the different behavior was discussed in detail.
