Effect of the pre-crack non-uniformity on the initiation of brittle fracture in a mini-CT
(2021) IGRDM — Location: online due to COVID (11.October.2021)
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- et. al.
- Abstract
- Given the limited thickness of the mini-CT geometry (4 mm), a non-uniform pre-crack tends to develop during fatigue pre-cracking, resulting in a possible non-uniform portion of mini-CT specimens being considered invalid because of the tight requirements in the ASTM standards regarding the fatigue pre-crack curvature. In order to demonstrate that meaningful results can still be obtained in the brittle regime from invalid mini-CT specimens, finite element simulations as well as experimental verifications were performed. DIC (digital image correlation), 3D-optical microscopy and SEM methodology were conducted to study the effect of pre-crack non-uniformity on the initiation of the brittle fracture.
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Citations
Li, M., & et al. (2021). Effect of the pre-crack non-uniformity on the initiation of brittle fracture in a mini-CT. IGRDM, online due to COVID. https://hdl.handle.net/2078.5/106360