Crack growth kinetics of 7050-T73651 aluminium alloy under constant load at 150°C
✍ Scribed by F. Sarioğlu; P. Abachi; M. Doruk
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 322 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2461
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✦ Synopsis
Crack growth tests at 150 ~ under constant load conditions were performed on compact tension specimens of 7050-T73651 aluminium alloy. The d.c. potential drop method was employed to monitor crack lengths throughout the tests. Fracture mechanics parameters such as the stress intensity factor (K) and energy-rate line integral ( C* ) were used to establish correlation with the crack propagation rates. As a result of experiments it was found that crack growth rates (da/dt) versus K, over discrete ranges of rates, can be described as a power-law equation in the form da/dt=AK". The parameter C* appears to correlate well with the crack propagation rates through a single power law over a wide range of rates.