GB/T 43143 - 2023 focuses on acoustic emission technology in nondestructive testing, which is specially used for the classification of concrete structure activity cracking. The standard specifies the performance requirements of testing equipment, such as acoustic emission Sensors and acquisition systems. Detailed inspection preparation, including measurement point layout and Sensors installation. Standardize the inspection process, from data collection to analysis and processing, classify cracking according to the characteristics of acoustic emission signals. It can help engineers quickly and accurately identify the cracking state of concrete structures, provide a scientific basis for building security evaluation and maintenance decisions, and ensure the long-term stable operation of concrete structures.