摘要
在研究了混凝土材料三点弯曲试验下声发射累积能量随载荷变化关系曲线的基础上,提取了混凝土材料不同破坏阶段的全波形声发射信号并分析了其频谱特性,并且通过与参数分析结果的比较,发现全波形声发射信号能够实时反映混凝土材料在载荷作用下破坏过程的特征信息。
Based on results of the three-point-bending experiments on concrete materials, the relationship between the cumulative energy of acoustic emission and load is studied, and waveform acoustic emission signal of different destruction states is picked up. Spectrum analysis is carried out, the results of which are compared with those of parameter analysis. The comparison shows that waveform acoustic emission signal can be used to disclose the characteristics of the concrete materials under loading in real time.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第5期803-807,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
江苏省自然科学基金重点资助项目(BK2001213)
关键词
建筑材料
全波形
声发射信号
参数分析
Acoustic emission testing
Load testing
Nondestructive examination
Safety testing
Spectrum analysis
Waveform analysis
