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Proceedings Paper

Use of multidimensional fiber grating strain sensors for damage detection in composite pressure vessels
Author(s): Marley Kunzler; Eric Udd; Mont Johnson; Kurt Mildenhall
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Paper Abstract

Arrays of multi-axis fiber grating strain sensors have been integrated into a composite pressure vessel test article, and are used to monitor changes in the transverse and axial strain fields during curing and pressure cycling near cut tow and Teflon tape defects. These changes in the multi-axis strain due to four pressure cycles and repeated impacts are measured and compared to ultrasonic and eddy current scans. Examples of the remote detection of damage using transverse strain and transverse strain gradients is given as well as data showing the ability of the system to distinguish broken tow and delamination defects.

Paper Details

Date Published: 16 May 2005
PDF: 10 pages
Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); doi: 10.1117/12.597633
Show Author Affiliations
Marley Kunzler, Blue Road Research (United States)
Eric Udd, Blue Road Research (United States)
Mont Johnson, ATK Thiokol (United States)
Kurt Mildenhall, ATK Thiokol (United States)


Published in SPIE Proceedings Vol. 5758:
Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems
Eric Udd; Daniele Inaudi, Editor(s)

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