GB/T 42399.3-2023 Active

This document describes the inspection methods and acceptance standards for inspection combination equipment (i.e., instruments, probes, and connecting cables). This document is applicable to ultrasonic detection systems with a center frequency of 0.5 MHz to 10 MHz, and contact-type (with or without wedges) or immersion-type line array phased array probes. This detection method is suitable for users in field or workshop environments. Its purpose is to verify the correct operation of the system, the characteristics of the acoustic beam, or whether the system has performance degradation before detection. This detection method is not intended to prove that the system is suitable for a specific application, but rather to demonstrate the ability of the combination equipment to generate ultrasonic acoustic beams according to the settings. The scope of application of this document does not include device calibration for specific applications, which is generally covered by the detection process. This document does not include the following: -- Ring arrays; -- Aperture sequences with different numbers of elements; -- Different settings for transmission and reception (e.g., excitation aperture, effective number of elements, delay); -- Single-element signal processing techniques that are more complex than the simple delay rule (e.g., full matrix acquisition).