Pilot evaluation of a fracture process zone in a modified compact tension specimen by X-ray tomography
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In the case of quasi-brittle material, there is a zone of non-linear behaving material, near the crack tip. A major part of this zone forms a so-called fracture process zone (FPZ), where mechanisms of material toughening take place. The main idea is to estimate the size of the fracture process zone under various types of load by using X-ray tomography. The estimation of the zone is supported by the theory of linear elastic fracture mechanics (LEFM) that could be a limit case of quasi-brittle mechanics. The size of the zone envelop is provided in X-ray snaps and compared with the theoretical size form LEFM.
KeywordsFracture process zone, X-ray, concrete, composites, stress intensity factor, compact tension specimen.
Document typePeer reviewed
Document versionFinal PDF
SourceFrattura ed Integrita Strutturale. 2017, issue 42, p. 161-169.
- Ústav stavební mechaniky