On-line Damage Detection of Wave-Guiding Rods Under High Temperature Conditions

Under high temperature, the acoustic emission sensors cannot be coupled directly onto the surface of the object to be measured,so the wave-guiding rod is used to connect the sensor and the measured object. Therefore,for the convenience of the scene detection,it is necessary to carry out studies on the characteristics of the wave-guiding rod auxiliary detection tool,the influence of the material, diameter and length of the waveguide rod on the acoustic emission detection results is analyzed.