Determination of the dynamic stress intensity factors for 7075-T6 aluminum alloy using the reflected caustic method
Conference
·
OSTI ID:563631
- Kanto-Gakuin Univ., Yokouhama (Japan)
- Saitama Institute of Technology (Japan)
Dynamic fracture initiation and propagation in Al 7075-T6 was investigated experimentally using the optical method of reflected caustics combined with a simplified high speed photography. A crack propagation testing configuration consisting of a three point bending specimen loaded In a drop weighting was used. It was found that prior to crack initiation the stress intensity factor time record calculated using the dynamic impact load and a static formula disagrees with the actual stress Intensity factor measured by caustics. The impact fracture tests are performed. With use of Al 7075-T6 band plate test specimens with a V-notch on their one side. The dynamic stress intensity factor K{sub id} are given. With this, the authors experimentally calculated the dynamic fracture toughness K{sub ID}.
- OSTI ID:
- 563631
- Report Number(s):
- CONF-9606176--
- Country of Publication:
- United States
- Language:
- English
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