山东大学学报 (工学版) ›› 2021, Vol. 51 ›› Issue (5): 84-90.doi: 10.6040/j.issn.1672-3961.0.2021.016
Junwei LI1(),Fei XU1,2,*(),Bing WANG3,Yang GAO1
摘要:
利用声发射技术对不同骨料粒径的混凝土试件进行断铅试验。探究不同骨料粒径对声发射检测混凝土材料定位精度、声速标定、时间参数设定的影响和最优传感器布置方式的选取。结果表明: 骨料是影响声发射检测精度的主要因素之一, 骨料粒径每增大5 mm, 声速下降7.5%;骨料粒径每增大5 mm, 上升时间下降3.5%左右, 且最大上升时间不超过200 μs; 进行“多次多点”测试能合理的确定最优传感器布置方式并有效减小定位误差, 但不能消除误差。
中图分类号:
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