会员注册 会员登录 主办单位:国家建筑材料工业局技术图书馆 加为收藏 设为主页
1151web_logo
专注建材行业知识大数据
首页 外文期刊 中文期刊 图书馆 建材智网
您所在的位置:首页>>论文报告
Characteristic analysis of acoustic emission signals of masonry specimens under uniaxial compression test
【文件类型】 【消费金额】3.6 【文章页数】12 【会员操作】  
【文章作者】Yanqi Wu;Shengli Li;Dongwei Wang
【文章摘要】      Damage assessment of masonry buildings in service is the key to structural health monitoring. A uniaxial compression test of brick masonry specimens based on acoustic emission (AE) technology was conducted to monitor and assess the dynamic damage and failure mechanisms of masonry structures under load in real time. The variation characteristics of the ringing counts, energy, and peak frequency of the AE characteristic parameters of the masonry specimens during the entire uniaxial compression process were collected and recorded, and the reference values of the time parameters of AE monitoring were determined. Results showed that the number of AE ringing counts increased sharply and the slope of the cumulative energy curve increased remarkably at the final failure stage of the brick masonry specimens under compression. In addition, the component ratio of the peak frequency in the low-frequency band increased and that of the peak frequency in the high-frequency band decreased. The damage status of the masonry structures could be predicted qualitatively by the AE signals with high energy in the low-frequency band. The ringing counts of the AE sensors at different locations on the masonry specimens were compared, and the rationalities of the position and number of AE sensors fixed on the brick masonry specimens in the uniaxial compression test were discussed.
【关 键 字】
【卷】196【ISSUE】Jan.30【ISSUEID】861C0056    【文章期份】2019    【发布日期】2019/8/27 11:26:03    点击率:0    打印    关闭
关于我们 公告信息 业务资费 广告合同 友情链接 购买阅读卡 在线订《水泥》
网络市场部:010-65761182 网络技术部:010-51164639  传真:010-65761182 Email:service@chinabmi.com
在线咨询:  
国家建筑材料工业局技术图书馆 京ICP备06011358号   京公网安备11010502024146