GB/T 46978-2026
ActiveNon-destructive testing—Methods of alternating current field measurement (ACFM) for metal structures
无损检测 金属结构交流电磁场检测方法
Application Summary AI generated
This standard specifies the alternating current field measurement (ACFM) technique for detecting surface and near-surface cracks in metal structures. It is applied in industries such as oil and gas, aerospace, and marine engineering for in-service inspection of welds, pipelines, and pressure vessels without requiring direct electrical contact or extensive surface preparation. The method is particularly useful for underwater or coated metal structures where traditional magnetic particle or eddy current testing is impractical.
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