Monitoring progressive damage in polymer-based composite using nonlinear dynamics and acoustic emission | Zendy

Mourad Bentahar | Zendy; Rachid El Guerjouma | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Monitoring progressive damage in polymer-based composite using nonlinear dynamics and acoustic emission

Author(s) -

Mourad Bentahar,

Rachid El Guerjouma

Publication year - 2008

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.2993755

Subject(s) - acoustic emission , materials science , bending , nonlinear system , sheet moulding compound , composite number , composite material , molding (decorative) , work (physics) , polymer , acoustics , physics , thermodynamics , quantum mechanics

In this work quantitative results of applying nonlinear acoustic dynamics to study progressive damage in a polymer-based composite SMC (sheet molding compound) are presented. Via carefully controlled resonant plate experiment, nonlinear slow dynamics (SNLD) response of SMC in terms of relaxation time and frequency shift has been shown to be very sensitive to gradual damage induced using three-point bending tests. Besides, acoustic emission monitoring is used to characterize damage through the elastic energy released by SMC at every damage step. Interesting logarithmlike changes of the SNLD parameters as a function of the acoustic emission cumulated energy are found.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research