Kim Jeongnam, Zhang Jiannan, Malikov Azamatjon Kakhramon Ugli, Cho Younho
Department of Reliability, Virtual Engineering Platform Research Division, Korea Institute of Machinery & Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea.
Graduate School of Mechanical, Pusan National University, 63 Beon-gil, Busandaehak-ro, Geumjeong-gu, Busan 46241, Republic of Korea.
Sensors (Basel). 2024 Aug 15;24(16):5278. doi: 10.3390/s24165278.
In this study, an ultrasonic guided wave system that can be used to detect broken tubes in stainless steel tube bundle structures (e.g., heat exchangers) with fairly narrow spacing between the tubes was designed. The interval between the tubes was 1.5 mm, and the thickness of the strip with a transducer that can be inspected by passing between the tubes was designed to be 1 mm. The damaged specimen was filled with water, and it was confirmed that the signal amplitude was smaller than that of the normal specimen filled with air. The ultrasonic properties of stainless steel were analyzed using the developed system, and it is expected that this will contribute to breakage inspection for tube bundles with narrow spacing.
在本研究中，设计了一种超声波导波系统，该系统可用于检测不锈钢管束结构（如热交换器）中管子间距相当窄的破损管子。管子之间的间距为1.5毫米，带有可在管子之间通过进行检测的换能器的条带厚度设计为1毫米。损坏的试样充满水，并且证实信号幅度小于充满空气的正常试样的信号幅度。使用所开发的系统分析了不锈钢的超声特性，预计这将有助于对间距窄的管束进行破损检测。
