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观测了不同切口相对深度的三点弯曲梁的声发射（ＡＥ）特性，发现切口相对深度对声发射特性有明显的影响．随切口相对深度增加，声发射事件突发性明显减小．采用Ｗｅｉｂｕｌ函数方法定量分析了切口相对深度对声发射特性和混凝土试件断裂特性及脆性的影响．结果表明，参数θ，ｍ具有明显的物理意义，θ表征由试件几何尺寸引起的试件脆性，ｍ值则表征材料的脆性．
The acoustic emission (AE) characteristics of three-point bending beams with different depths of cut were observed. It was found that the relative depth of cuts had a significant effect on acoustic emission characteristics. With the increase of the relative depth of incision, the sudden burst of acoustic emission events is significantly reduced. Weihole function method was used to quantitatively analyze the influence of the relative depth of the incision on acoustic emission characteristics and fracture characteristics and brittleness of concrete specimens. The results show that the parameters θ,m have obvious physical meanings, the θ characterizes the brittleness of the specimen caused by the geometrical dimensions of the specimen, and the m value characterizes the brittleness of the material.