TY - GEN
T1 - Parameter sensitivities to damage progression in structures
AU - Bordonaro, Giancarlo G.
AU - Hajj, Muhammad R.
PY - 2010
Y1 - 2010
N2 - Variations in the natural frequency and damping coefficients with cyclic fatigue testing in steel and composite beams carrying a lumped mass are assessed. The identification of these parameters is performed by exploiting the nonlinear behavior of the beam-mass system and matching an approximate solution of the representative model with quantities obtained from spectral analysis of measured vibrations. Percentage variations of the identified parameters during the tests and up to the point where cracks were observed are determined. The results show that the damping is more sensitive to damage progression than the natural frequency.
AB - Variations in the natural frequency and damping coefficients with cyclic fatigue testing in steel and composite beams carrying a lumped mass are assessed. The identification of these parameters is performed by exploiting the nonlinear behavior of the beam-mass system and matching an approximate solution of the representative model with quantities obtained from spectral analysis of measured vibrations. Percentage variations of the identified parameters during the tests and up to the point where cracks were observed are determined. The results show that the damping is more sensitive to damage progression than the natural frequency.
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U2 - 10.1115/IMECE2009-11354
DO - 10.1115/IMECE2009-11354
M3 - Conference contribution
AN - SCOPUS:78049368859
SN - 9780791843840
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings
SP - 87
EP - 89
BT - Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
T2 - ASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
Y2 - 13 November 2009 through 19 November 2009
ER -