期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：2
页码：1-6
DOI：10.1088/1755-1315/252/2/022128
出版社：IOP Publishing
摘要：Concrete is frequently used as construction material, because of its favourable properties. However, concrete material is a kind of artificial multiphase composite material, which has the inevitable flaws, such as the anisotropy. As a result, it is necessary for structure to make real time monitoring. The wave speed has a significant effect on the AE location results. The experiments between AE wave velocity and different distances condition under concrete was conducted. With the increase of distance in concrete, the wave propagation speed will have a little reduction. However, the acoustic emission location system adopts constant wave velocity, so the error will be tremendous. For this reason, this paper utilizes the thought of mutative speed and find a influence between wave velocity and propagation distance, max aggregate and water-cement ratio.
