Modal approach to assurance of structural integrity

Richard N. Wake*, John T. Evans, J. S. Burdess, H. W. Chandler

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

3 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsInderjit Chopra
Number of pages9
Publication statusPublished - 1 Jan 1996
EventSmart Structures and Materials 1996: Smart Structures and Integrated Systems - San Diego, CA, USA
Duration: 26 Feb 199629 Feb 1996


ConferenceSmart Structures and Materials 1996: Smart Structures and Integrated Systems
CitySan Diego, CA, USA


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