TY - JOUR
T1 - Bicoherence-based structural health monitoring of fixed offshore structures
AU - Hillis, Andrew J.
AU - Courtney, C. R. P.
N1 - Health Monitoring of Structural and Biological Systems 2010. 8-11 March 2010. San Diego, CA, United States.
PY - 2010/4
Y1 - 2010/4
N2 - Structural integrity management is key to the safe and economic operation of offshore structures. Presently, regular manual inspections are conducted. This is expensive, time consuming, and prone to human error. This paper investigates the possibility of using the bicoherence function of the measured structural acceleration to provide automatic early detection of damage in an offshore structure. The method is shown to be insensitive to typical operating parameter variations and to variations in wave excitation force, and demonstrates that very small changes in stiffness of individual structural members are detectable from measurements of global structural motion.
AB - Structural integrity management is key to the safe and economic operation of offshore structures. Presently, regular manual inspections are conducted. This is expensive, time consuming, and prone to human error. This paper investigates the possibility of using the bicoherence function of the measured structural acceleration to provide automatic early detection of damage in an offshore structure. The method is shown to be insensitive to typical operating parameter variations and to variations in wave excitation force, and demonstrates that very small changes in stiffness of individual structural members are detectable from measurements of global structural motion.
UR - http://www.scopus.com/inward/record.url?scp=77953487567&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1117/12.846094
U2 - 10.1117/12.846094
DO - 10.1117/12.846094
M3 - Article
VL - 7650
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
M1 - 76502C
T2 - Health Monitoring of Structural and Biological Systems 2010, March 8, 2010 - March 11, 2010
Y2 - 1 April 2010
ER -