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Copyright © 1996 - 2025 ASTM. All Rights Reserved. ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA, 19428-2959 USA

Work Item

ASTM WK91109

New Guide for Standard Guide for Flaw Detection using Nonlinear Acoustic Resonance Inspection

1. Scope
This guide describes a general procedure and its variants, and a vocabulary, for detecting flaws in metallic and non-metallic parts using nonlinear resonance ultrasound inspection methods. The procedure is intended for use with instruments capable of exciting and recording whole-body resonance conditions within parts which exhibit acoustical or ultrasonic ringing. It is used to distinguish acceptable parts from those containing flaws such as cracks, delaminations, AM flaws (layer and cross-layer) that are closely correlated with nonlinear mechanical system dynamic responses of the parts.
Keywords
nondestructive testing; defect; kissing bonds; delaminations
Rationale

Industry-ready Nonlinear Resonance Ultrasound Inspection implementations have emerged and are being deployed, each with strengths and weaknesses requiring elucidation and guidance for potential users; confusion and lack of clarity around vocabulary. The guide will help users understand the relative strengths and weaknesses of each implementation, and provide clarity around the proliferation of names, abbreviations and terminology. Users will include those seeking to detect high-aspect ratio flaws (cracks, contact cracks, kissing bonds, delaminations); production managers requiring rapid NDT.

Details

Developed by Subcommittee: E07.06

Committee: E07

Staff Manager: Kristy Straiton

Work Item Status

Date Initiated: 06-11-2024

Technical Contact: Julian Wright

Item: 000

Ballot: 

Status: 

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