Effects of crack length and crack front geometry on KQ-values of aluminum 7075-T651 ct-specimens

✍ Scribed by Henk F. De Jong

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 554 KB
• Volume: 14
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(81)90041-2

✦ Synopsis

Fracture toughness tests on compact tension specimens of aluminum 7075-T6.51 were carried out to investigate the influence of the crack length ratio on the critical stress intensity factor. The results showed that there is probably no, or only a minor influence of the crack length ratio in the investigated range of crack length ratios (about 0.35 < a/W < 0.75). However, the results were influenced by an effect of the fatique crack surface geometry. This effect is also studied and its influence on the critical stress intensity factor is discussed.