Rapid Non-Destructive Residual Stress Analysis of Steel Structures – Phase 2, Assessment and Testing of the Prototype Magnetic Barkhausen Noise Analysis System

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Authors
  1. Krause, T.W.
  2. McNairnay, P.
  3. Babbar, V.
  4. Samimi, A.
  5. Weetman, P.
  6. Clapham, L.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Royal Military Coll of Canada, Kingston ONT (CAN)
Abstract
The Royal Military College of Canada (RMCC) was contracted by DRDC to develop a prototype portable Magnetic Barkhausen Noise Analysis (MBNA) system for qualitative rapid residual stress analysis of structural ferromagnetic steels. The unique design offers rapid interrogation of ferromagnetic materials and a tunable depth of analysis. During phase I, a prototype laboratory MBNA measurement system was designed and constructed. This report describes progress achieved during phase II of the three phase project. During phase II (current work) a deeper understanding of the MBNA functionality and inner workings was achieved through experimental testing and modelling. The laboratory system was improved. Experimental testing and modeling were used to achieve greater accuracy of stress values at varying depth within ferromagnetic steel. This analysis provides the basis for design of the portable MBNA system that is to be delivered at the end of phase III. The laboratory MBNA has been demonstrated to be effective for rapid identification of regions of high tensile stress and stress gradients – a precursor to crack initiation. A field-ready portable system will be supplied to DRDC Atlantic by March 2014.

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Report Number
DRDC-ATLANTIC-CR-2013-202 — Contract Report
Date of publication
01 Mar 2014
Number of Pages
68
DSTKIM No
CA039894
CANDIS No
800970
Format(s):
Electronic Document(PDF)

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