Prof. Qudong Wang
Project Description and Objectives
The demand for high performance damping materials is rapidly and continuously growing in a variety of aerospace, mechanical, and civil systems. Although metal matrix composites reinforced with traditional whiskers or particles possess high strength and stiffness properties, they suffer from several limitations such as high weight, poor damping capacity and low plasticity. For these reasons there is a need to develop advanced damping materials that can overcome the limitations discussed above.
In recent years, there has been a steadily increasing interest in the development of carbon nanotube (CNT) reinforced composites. The motive is to transfer mechanical and physical properties of CNTs to bulk engineering materials. In this light, ceramic, polymer, and metal are favourably considered as a matrix material. It has been confirmed that the mechanical properties of metal matrix composites were improved when an appropriate amount of nanotubes were added. Furthermore, it was also reported in CNT–polymer composites that a great improvement in damping capacity was achieved without sacrificing the mechanical strength and stiffness of the polymer. However, the damping behaviour of metal matrix composites reinforced by CNTs have been rarely reported.
Fabricate CNT/AZ91 composites
Investigate the effects of CNT content and CEC parameters
Discuss the intrinsic damping mechanisms of composites