With the large-scale dynamic finite element software ANSYS/LS-DYNA,the propagation laws of Acoustic emission(AE) in the wave-guide poles are studied for two simulation schemes.The results indicate that,the propagation of AE in the wave-guide pole will show the attenuation law,which is affected by the diameter or length of the wave-guide pole.According to the numerical simulation results,it is known that,in the range of 5mm to 40mm the diameter of wave guides affects AE propagation a little.When the diameter...