钢筋混凝土梁弯曲破坏时声发射信号能量特征及其辅助定位

为了得到钢筋混凝土梁在弯曲破坏时声发射能量特征,对钢筋混凝土梁进行了弯曲破坏实验,捕捉实时能量特征。加载方式分为直接加载至破坏和分段加载至破坏两种方式。通过分析捕获的实时声发射信号能量信息以及整个加载阶段钢筋混凝土梁的能量释放特征,对钢筋混凝土梁的损伤断裂进行了预示。加载之前进行了断铅实验,进行了能量辅助定位,并获得了较好的精度。

Energy characteristics of acoustic emission signals of the reinforced concrete beams during bending failure and the auxiliary location

To get the real-time energy characteristics of acoustic emission signals, we carried out bending failure experiments of the reinforced concrete beams. The loading methods consist of direct loading and segment loading. By analyzing the the real-time energy characteristics of acoustic emission signal of the reinforced concrete beams during the entire period, the damage and fracture of reinforced concrete beams were indicated. We conducted the lead-off experiments before loading ,doing energy-assisted location, which is more accurate.