Multi-angle phased array ultrasonic technology has important application value in fatigue crack detection of complex structural parts. In this paper, the basic principle of the technique is summarized first, and then the main difficulties in fatigue crack detection of complex structural parts are analyzed, including complex geometric structure interference, quantitative crack characteristics evaluation and environmental factors. To address these challenges, innovative solutions such as deep learning signal processing, multi-parameter feature extraction and adaptive detection strategies are proposed. This study provides a new idea and direction for the further development of fatigue crack detection technology for complex structural parts.

Multi-angle phased array ultrasound  /  complex structural parts  /  fatigue crack