NDTnet 1998 Aug, Vol.3 No.8

Abstract

Fig.: The portable MAPS stress measurement system

A portable instrument for the measurement of stress in structural steels and other ferromagnetic materials will be presented. This instrument, known at MAPS, measures a number of different magnetic parameters and incorporates extensive software modelling enabling stress information to be isolated from other factors such as material texture. The measurement is nondestructive and rapid, and absolute biaxial stress levels and principal axes are subsequently determined.

The presentation will focus on the performance and capabilities of the system for measuring residual and applied stress levels. Examples of uniaxial and biaxial stress and measurement with depth will be shown. There will be an emphasis on the scientific background to the techniques by way of comparisons between theoretical modelling and experiment. Recently MAPS has been extensively used in the field and on plant. Illustrations of measurements will include applications on rolled plate, pipelines, rail and turbines and also comparisons with other techniques.

The talk will finish with a summary of the specifications of the MAPS system.

Abstract Source:
Book of Abstracts, 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN: 87-986898-0-00

Full-Text Source:
Proceedings of the 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN:

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