GB/T 31211.2-2024Non-destructive testing - Ultrasonic guided wave testing - Part 2: Test method based on magnetostrictive transduction (English PDF)

1 Scope

This document describes a method for magnetostrictive ultrasonic guided wave testing:

This document is applicable to the testing temperature range of -20°C~550°C, diameter of 10mm~1000mm (wall thickness of 0:5mm~

80mm) pipes, rods with diameters of 10mm~80mm, wires with diameters of 5mm~226mm, and plates with thicknesses of 0:5mm~80mm

Inspection of materials and other components:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document:

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document:

GB/T 12604:1 Nondestructive testing terminology Ultrasonic testing

GB/T 12604:6 Nondestructive testing terminology Eddy current testing

GB/T 31211:1 Nondestructive testing - Ultrasonic guided wave testing - Part 1: General

3 Terms and definitions

The terms and definitions defined in GB/T 12604:1, GB/T 12604:6 and GB/T 31211:1 and the following apply to this document:

3:1

Magnetostriction

The phenomenon that the size and shape of ferromagnetic materials change when they are subjected to an external magnetic field:

3:2

Inverse magnetostriction

The phenomenon that the magnetic field state of ferromagnetic materials changes when subjected to external force:

3:3

Ultrasonic guided waves excited or received by magnetostrictive sensors:

3:4

Magnetostrictive foil

Strip made of material with strong magnetostrictive effect (3:1):

Note: Such as nickel alloy strip, iron-cobalt hard magnetic alloy strip, iron-gallium alloy strip, terbium-dysprosium (Terfenol-D) iron alloy strip, etc:

GB/T 32073.1 | GB/T 32335 | GB/T 28784.2 | GB/T 31211.3 | GB/T 31211.1 | GB/T 31207 | […]