Standard Guides:WeldingPipingASMEAPIAsset Matrix
Alternating Current Field Measurement
AdvancedElectromagnetic • ACFM

Alternating Current Field Measurement (ACFM)

Method Overview

Electromagnetic technique for detecting and sizing surface-breaking cracks in conductive welds, even through thick coatings.

Core Method Specifications

Technique IDACFM
AcronymACFM
CategoryAdvanced
ModalityElectromagnetic
Default Report TemplateACFM-Standard-Template

Target Applications & Governing Standards

1 Scopes Configured
Pressure Vessels
ASME Sec V Art 15
Target Assets / Components:
Coated Structural WeldsSupport Skirt Attachments
Detectable Defects & Anomalies:
• Surface Fatigue Cracks through Paint/Coating

Technique-to-OEM Compatibility Matrix

Verified manufacturers, instrument models, and diagnostic portals supporting ACFM.

2 Verified OEMs
Eddyfi Technologies

Eddyfi Technologies

Specialized NDT inspection technologies including Pulsed Eddy Current (PEC), ACFM, and magnetic crawlers.

Modalities:ETMFLPAUTACFMPEC+5 more
OEM Profile Eddyfi Support Center
OEM Site
TSC Subsea

TSC Subsea

Subsea ACFM flaw detection and sizing systems for offshore platforms and jacket structures.

Modalities:ACFM
OEM Profile TSC Subsea Portal
OEM Site
ASME Sec V & ISO 9712 Qualified
Rent ACFM Instruments OEM Hardware CatalogPost ACFM Project Scope
AI-Assisted Technical Reference & Regulatory DisclaimerEducational & Reference Only

Technical articles, damage mechanism guides, inspection scopes, engineering formulas, and code summaries published across the NDT Exchange knowledge base are synthesized with the assistance of Artificial Intelligence (AI) and specialized industrial engineering reference models.

While all content is cross-referenced against authoritative standards (ASME, API, AWS, ISO, ASTM, NACE/AMPP), it is provided strictly for educational, preliminary scoping, and reference purposes. It does not constitute formal professional engineering advice, procedure qualifications (WPS/PQR), or certified inspection sign-offs. Always verify testing parameters, wall thickness sizing, and flaw acceptance criteria against the latest governing code edition and consult a certified Level III, Professional Engineer (PE), or certified inspector (API 510/570/653, AWS CWI, CSWIP) prior to field execution.