In this paper dynamic damping properties of a nominated flexible structural adhesive have been identified using an extended-direct modal based joint identification method. It has been revealed that damping characteristics of adhesive are correlated to both frequency and mode shape. Young’s and shear moduli increase with frequency but damping on the other hand, decrease. The results showed that ...

Electromechanical actuators (EMAs), as the critical actuator system of next-generation aircraft, have attracted attention many institutions and enterprises around world. However, due to harsh working conditions, their reliability cannot satisfy requirements widespread application in aircraft. Therefore, order conduct fault diagnosis on EMAs, this paper, we establish a comprehensive dynamic mode...

Dynamic mechanical analysis (DMA) method is used for measuring viscoelastic properties of materials. The governing equations calculating modulus neglect shear deflection component and use an assumption constant Poisson's ratio in absence methods that can conduct full field deformation measurement. present work focused on using in-situ imaging to obtain the displacement during specimen deformati...