Study on Detection of Damage Depth of Concrete after Fire Using Ultrasonic Impulse-echo Method

Detection the damage depth is important to comprehensive assess the damaged level of concrete structure after fire. For the shortcoming of conventional nondestructively detection method, the principle and superiority of detection the damage depth using ultrasonic impulse-echo method is discussed. Based on the superior character of wavelet transform, collected signal analyzed by the wavelet transform, the characteristic information of damage depth is picked out. The damage depth of concrete structure after fire can be detected accurately and quickly using the ultrasonic pulse-echo method. It is proved that the efficiency detection concrete structure after fire is promoted using the ultrasonic impulse-echo method by experiment.