Research progress of ultrasonic in-situ nondestructive testing technology for aircraft structure

Damage detection is a critical link of aviation equipment development，field operation and maintenance，which directly affects the development process and service safety of aircraft structure. In recent years，domestic and foreign scholars and scientific research institutions have carried out a lot of research works in the field of ultrasonic nondestructive testing. Based on this，this paper，guided by the needs of damage detection in the development and operation of aviation equipment，briefly analyzes the characteristics and requirements of typical structural damage of aviation equipment and in-situ detection. This paper focuses on summarizing the latest research progress of ultrasonic theories and methods，advanced detection sensor designs and special detection device research and development. Furthermore，incorporating new issues，ideas and directions emerging from technological research and engineering practice，this paper summarizes and forecasts the main challenges and future development trends in areas such as damage detection technologies for heterogeneous materials，transducer design methods for complex-shaped structures，and the equipment research and development and engineering application of new non-contact testing devices.