پایش وضعیت اتصال جوش در صفحات با استفاده از انتشار امواج آکوستیک

The inspection and monitoring of the health and integrity of welded joints in various industries, including pipelines, construction, and transportation, is critical, as defects such as porosity, cracks, and incomplete fusion can lead to serious structural failures. This study explores the feasibility of using low-frequency acoustic wave propagation techniques and low-sampling-rate sensors, installed on one side of the specimens, for the inspection of welding defects. The proposed method involves calculating cost functions based on the time and frequency characteristics of the emitted signals, enabling continuous monitoring and increased accuracy in defect detection. Silicone dampers are used on the edges of the specimens to reduce interference from reflected waves and to develop effective strategies for cost function computation. To validate the proposed method, an experiment was conducted on suspended carbon steel plates. Before testing, the presence of defects in the specimens was confirmed through ultrasonic testing. Multiple experiments were performed to evaluate the efficiency of the proposed method. The test results confirmed the effectiveness of this technique for preliminary inspection of certain welding defects. This method shows significant potential as a practical solution for enhancing safety and reliability in welded structures for industrial applications.