β Scribed by R. P. Wei
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The rates of fatigue-crack propagatmn for a h~gh-strength aluminum alloy (7075-T651) in a~ envaronment of D20 (99 98~ purity) at room temperature were determined and compared with data obtained in [ugh-purity argon and dastflled water. The results showed that D20 caused a ten-fold Increase in the ra
Fatigue-crack propagation data have been obtained for a variety of aluminum alloys. tempers, and products in relatively thick sections of interest for large aircraft shapes. For the higher stress-intensity ranges. the alloys rate in about the same order with regard to resistance to fatigue crack pro
The crack propagation velocity in corroGon fatigue (du/dN), were measured on the Ni-Cr-Mo steel quenched and tempered at 473 or 773 K. The steel with high sensitivity to delayed failure reveals the largest (du/dN), under square load and the smaller (da/dN), under positive saw tooth load. The frequen