ISO 4773:2023 无损检测 用相控阵技术的超声导波检测

标准编号：ISO 4773:2023

中文名称：无损检测 用相控阵技术的超声导波检测

英文名称：Non-destructive testing — Ultrasonic guided-wave testing using the phased-array technique

发布日期：2023-10

标准范围

本文件规定了相控阵导波测试在各种类型的不可接近结构（包括埋地管道）中的应用概念。考虑的材料是碳钢和不锈钢。本文件不包括地下设施和相控阵超声导波测试方案的原则和标准。此外，本文件包括一个优化的过程，以在不可接近的管道外壳上得出可靠的测试结果。本文件为各种类型的不可接近结构（包括碳钢和不锈钢制成的埋地管道）使用相控阵导波测试提供了指导。本文档中概述的方法包括一个优化的过程，用于在不可接近的管道情况下获得可靠的测试结果，并根据缺陷类型、位置和频率对GW焦点位置的光束模式进行调整。该过程还考虑了导波的分布图和所选模式的特性，通过基于给定阵列探头的周向布置间隔的数量调整每个换能器的激励时间延迟来实现最佳聚焦和转向。

This document specifies a concept of application of phased-array guided-wave testing for various types of inaccessible structures, including buried pipelines.

Materials considered are carbon steel and stainless steel. This document does not include principles and criteria for underground facilities and the phased-array ultrasonic guided-wave testing scheme.

Furthermore, this document consists of an optimized process to draw reliable test results on inaccessible pipe cases. This document provides guidance on the use of phased-array guided-wave testing for various types of inaccessible structures, including buried pipelines made of carbon steel and stainless steel. The methodology outlined in this document includes an optimized process for achieving reliable test results on inaccessible pipe cases, with adjustments made to the beam pattern of the GW's focus location based on the defect type, location, and frequency. The process also takes into consideration the distribution diagram of the guided waves and the characteristics of the selected mode, with optimal focusing and steering achieved by adjusting the excitation time delay for each transducer based on the number of circumferential arrangement intervals of a given array probe.

标准预览图