Damage detection of a woven fabric composite laminate using a modal strain energy method

2009 ◽  
Vol 31 (5) ◽  
pp. 1042-1055 ◽  
Author(s):  
Huiwen Hu ◽  
Jieming Wang
Keyword(s):  
Damage Detection ◽  
Energy Method ◽  
Strain Energy ◽  
Composite Laminate ◽  
Woven Fabric ◽  
Modal Strain Energy ◽  
Modal Strain Energy Method ◽  
Fabric Composite ◽  
Strain Energy Method

Infrastructure Sustainability

2011 ◽  
pp. 186-201
Author(s):  
Hoi Wai Shih ◽  
David Thambiratnam ◽  
Tommy Chan
Keyword(s):  
Energy Method ◽  
Strain Energy ◽  
Health State ◽  
Modal Strain Energy ◽  
Structural Health ◽  
Modal Strain Energy Method ◽  
Modal Flexibility ◽  
Before And After ◽  
Composite Bridges ◽  
Strain Energy Method

Assessing the structural health state of urban infrastructure is crucial in terms of infrastructure sustainability. This chapter uses dynamic computer simulation techniques to apply a procedure using vibration-based methods for damage assessment in multiple-girder composite bridges. In addition to changes in natural frequencies, this multi-criteria procedure incorporates two methods, namely, the modal flexibility and the modal strain energy method. Using the numerically simulated modal data obtained through finite element analysis software, algorithms based on modal flexibility and modal strain energy change, before and after damage, are obtained and used as the indices for the assessment of structural health state. The feasibility and capability of the approach is demonstrated through numerical studies of a proposed structure with six damage scenarios. It is concluded that the modal strain energy method is capable of application to multiple-girder composite bridges, as evidenced through the example treated in this chapter.

Sign in / Sign up

Export Citation Format

Share Document