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Proceedings Paper

Modal approach to assurance of structural integrity
Author(s): Richard N. Wake; John Terence Evans; James S. Burdess; H. W. Chandler
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Paper Abstract

A smart system for monitoring the structural integrity of pressure vessels throughout service life might consist of a limited number of piezoelectric transducers permanently bonded to the vessel, together with a system for intelligent real-time data processing. In the present work it is shown that the growth of subcritical cracks can be detected using the modal properties of a vibrating cylindrical tube. Finite element analysis and experimental measurements are in agreement in showing that the growth of cracks in a variety of locations can be detected using various strategies based on modal analysis. One strategy corresponds closely with a whole- field method of detection in that measurements made at a single point are capable of revealing crack growth in a number of different locations in the cylinder.

Paper Details

Date Published: 1 May 1996
PDF: 9 pages
Proc. SPIE 2717, Smart Structures and Materials 1996: Smart Structures and Integrated Systems, (1 May 1996); doi: 10.1117/12.239034
Show Author Affiliations
Richard N. Wake, Univ. of Newcastle upon Tyne (United Kingdom)
John Terence Evans, Univ. of Newcastle upon Tyne (United Kingdom)
James S. Burdess, Univ. of Newcastle upon Tyne (United Kingdom)
H. W. Chandler, Univ. of Aberdeen (United Kingdom)


Published in SPIE Proceedings Vol. 2717:
Smart Structures and Materials 1996: Smart Structures and Integrated Systems
Inderjit Chopra, Editor(s)

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