Use of multidimensional fiber grating strain sensors for damage detection in composite pressure vessels

Marley Kunzler; Eric Udd; Mont Johnson; Kurt Mildenhall

doi:10.1117/12.597633

16 May 2005 Use of multidimensional fiber grating strain sensors for damage detection in composite pressure vessels

Marley Kunzler, Eric Udd, Mont Johnson, Kurt Mildenhall

Proceedings Volume 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems; (2005) https://doi.org/10.1117/12.597633
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

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.

Citation Download Citation

Marley Kunzler, Eric Udd, Mont Johnson, and Kurt Mildenhall "Use of multidimensional fiber grating strain sensors for damage detection in composite pressure vessels", Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); https://doi.org/10.1117/12.597633

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