DOI: 10.3724/SP.J.1249.2018.05460

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2018/35:5 PP.460-466

Visual analysis for cracking evolution of micro-beam under three-point bending

The traditional three-point bending test is unable to realize visual quantitative analysis of sample internal crack. In order to observe the crack evolution process, we, in-situ, track and monitor the micro-beam cracking process under the three-point bending by X-ray microcomputed tomography technology (X-ray μCT). We analyze quantitatively the pore and crack of micro-beam by 2D/3D visualization of the morpholog characteristics. The results show that X-ray μCT technology test is an effective nondestructive and in-situ tracking method; The three-dimensional visualization of pore and crack and the crack propagation under three-point bending test can be obtained; moreover, crack and pore quantitative analysis can be performed to get the length variation curve of crack under X-ray μCT test and the crack volume histogram.

Key words:structural engineering,three-point bending,crack propagation process,crack length,3D visualization,X-ray microcomputed tomography

ReleaseDate:2018-12-14 06:52:39

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