钢管混凝土质量的无损检测（Nondestructive testing of the quality of steel tube concrete）.doc

钢管混凝土质量的无损检测（Nondestructive testing of the quality of steel tube concrete） Experimental study on the ND T nondestructive testing Nondestructive testing of the quality of steel tube concrete XiaoYunFeng Xian-yan zhou, Zhongnan forestry university of science and technology , changsha 410004). In this paper, : comprehensive application of ultrasonic method (sound, audio, etc ), impact echo method and sound recognition method to detect component quality. The results table Ming Ultrasonic method can improve the detection accuracy and the ability to identify defects ; The impact echo method can be used to detect the thickness of concrete situation ; Sound recognition method can quickly determine the defect location of components. Middle image classification no. : O327; TU311. 3; TG115. 28 document code: A post no. : 100026656 (2009) 0520356204 keywords Steel tube concrete ; defects ; Ultrasonic testing ; The wavelet analysis ; Sound signal ; Impact echo method Nondestructive Testing Technologies of Concrete2Filled Steel Tube XIAO Yun2Feng, ZHOU Xian2Yan (Central South University of Forestry and Technology, Changsha 410004, China) Abstract: Three testing methods, such as impact2echo, ultrasonic and the acoustic signal were used to detect The structure quality of a large bridge. The inspection and analysis showed that the accuracy of waves Testing could be improved by using two or more parameters such as time and frequency. The impact2echo method To inspect the quality probably of concrete2filled steel tube; The sound identification could detect flaws in the Concrete2filled steel tube. Keywords: Concrete2filled steel tube; The Flaw; Ultrasonic testing; Wavelet analysis; signal; Impact2echo testing Concrete-filled steel tube concrete is mixed with cement A load-bearing component formed by soil It has a high load, plasticity and toughness Good quality, easy construction, fire resistance and economic efficiency. Steel pipe Concrete members are subjected to the characteristics