Multi-scale cracking characterization
An asphalt mixture beam specimen whose cracking is simultaneously monitored by three-point bending, acoustic emission, and digital image correlation to capture the full process from microcrack initiation to macrocrack failure with multiple indexes, offering a more systematic evaluation than any single method.
Li, Jianfeng · Wang, Linbing · Wei, Duan · Su, Ningyi · Gao, Yang · Li, Fan · Zhang, Xiao
Construction and Building Materials 2024
Four stages of damage evolution and cracking process obtained by AE source location simulation
Principal strain points randomly distributed in tensile zone of beam bottom at initial loading, increasing in number with decreasing loading rate
Macroscopic main crack generated and expanded from maximum principal strain point P1 at later loading stage