GB/T 41120-2021 Non-destructive testing—Test method for non-ferromagnetic metallic component pulsed eddy current testing

Scope

This document specifies the method of using pulse eddy current technology for the detection of corrosion and cracks in non-ferromagnetic metal materials.
This document is applicable to the detection of austenitic stainless steel, aluminum, and aluminum alloy components with a coating thickness of no more than 200 mm, a thickness of 1 mm to 50 mm, and a radius of curvature of no less than 25 mm. For other non-ferromagnetic metal materials, the detection shall be carried out after verification and reference to this document.
This document is applicable to the detection of wall thickness discontinuities caused by large-area corrosion in pressure equipment components without removing the coating, and to the detection of small-volume discontinuities and cracks such as pitting and dimples in the deep layers of thin-walled load-bearing parts and around the connecting components.
This document does not specify acceptance criteria. The specific acceptance criteria shall be determined through consultation between all parties to the contract.

Development Information

Referenced Standards

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