ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06

3aSA7. Vibrational power flow through adhesively bonded beams.

Qunli Wu

Yiren Hong

M. K. Lim

School of Mech. and Prod. Eng., Nanyang Technol. Univ., Singapore 2263, Republic of Singapore

A theoretical and experimental study of power flow through adhesive lap-joint beams was carried out in this paper. The mathematical model of power flow in the beams was developed by treating the joint as a sandwich structure. The power flow analysis for different joint parameters was performed. The relationship between the joint parameters and the power flow was investigated. The power flow measurement system was calibrated in a stepped beam with known reflection coefficient of the step, and then the measurements were carried out on aluminum beams with epoxy bonded joints. The measured results agreed well with the theoretical prediction. The termination effects on the power flow measurement are discussed.