期刊
INTERNATIONAL JOURNAL OF FRACTURE
卷 140, 期 1-4, 页码 141-157出版社
SPRINGER
DOI: 10.1007/s10704-006-6631-2
关键词
brittle fracture; ceramics; photomechanics
Digital image correlation is an appealing technique for studying crack propagation in brittle materials such as ceramics. A case study is discussed where the crack geometry, and the crack opening displacement are evaluated from image correlation by following two different measurement and identification routes. The displacement uncertainty can reach the nanometer range even though optical pictures are dealt with. The stress intensity factor is estimated with a 7% uncertainty in a complex loading set-up without having to resort to a numerical modelling of the experiment.
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