TY - GEN
T1 - Measurement of the damping properties of carbon composite plates by the power input method
AU - Jaber, M.
AU - Schneeweiss, H.
AU - Bös, J.
AU - Melz, T.
PY - 2014
Y1 - 2014
N2 - Carbon composite structures are widely replacing metallic ones in the automotive sector because of their many advantages over conventional structural materials, e.g., their high stiffness and strength-to-mass ratio. Moreover, their potential high inherent material damping can improve the dissipation of vibrational energy in the vehicle and, consequently, enhance its NVH performance. The main objective of the present investigation is to examine how the damping properties of carbon composite plates vary with the laminate stacking sequence and boundary conditions. Free and simply supported boundary conditions are investigated. In order to measure the damping in a carbon composite plate, a 2-D laser doppler vibrometer is used. The loss factor is calculated by the power input method. In this paper, the frequency-dependent loss factor is studied for various laminate stacking of carbon composites (orthotropic, symmetric) with and without damping layers. A comparison between the power input method and the power bandwidth method is done for the different cases. An application of the power input method to measure the loss factors of a car's roof is performed.
AB - Carbon composite structures are widely replacing metallic ones in the automotive sector because of their many advantages over conventional structural materials, e.g., their high stiffness and strength-to-mass ratio. Moreover, their potential high inherent material damping can improve the dissipation of vibrational energy in the vehicle and, consequently, enhance its NVH performance. The main objective of the present investigation is to examine how the damping properties of carbon composite plates vary with the laminate stacking sequence and boundary conditions. Free and simply supported boundary conditions are investigated. In order to measure the damping in a carbon composite plate, a 2-D laser doppler vibrometer is used. The loss factor is calculated by the power input method. In this paper, the frequency-dependent loss factor is studied for various laminate stacking of carbon composites (orthotropic, symmetric) with and without damping layers. A comparison between the power input method and the power bandwidth method is done for the different cases. An application of the power input method to measure the loss factors of a car's roof is performed.
UR - https://www.scopus.com/pages/publications/84913550682
M3 - Conference contribution
AN - SCOPUS:84913550682
T3 - Proceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics
SP - 1445
EP - 1458
BT - Proceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics
A2 - Sas, P.
A2 - Moens, D.
A2 - Denayer, H.
PB - KU Leuven
T2 - 26th International Conference on Noise and Vibration Engineering, ISMA 2014, Including the 5th International Conference on Uncertainty in Structural Dynamics, USD 2014
Y2 - 15 September 2014 through 17 September 2014
ER -