Application of acoustic emission on the characterization of fracture in textile reinforced cement laminates.
作者： J. Blom , J. Wastiels , D. G. Aggelis
DOI: 10.1155/2014/178020
关键词:
摘要: This work studies the acoustic emission (AE) behavior of textile reinforced cementitious (TRC) composites under flexural loading. The main objective is to link specific AE parameters fracture mechanisms that are successively dominating failure this laminated material. At relatively low load, initiated by matrix cracking while, at moment peak load and thereafter, fiber pull-out stage reached. Stress modeling material bending reveals initiation shear phenomena can also be activated depending on shape (curvature) plate specimens. Preliminary results show waveform like frequency energy changing during loading, following shift fracturing mechanisms. Additionally, specimens with different curvature very indicative stress mode confirming modeling. Moreover, source location shows extent process zone its development in relation load. It seen monitoring yields valuable real time information same supplies feedback
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