Detection of Transverse Cracking Damage in GFRP by Acoustic Emission and Digital Image Correlation Techniques

Transverse cracking in ۹۰° plies of glass-fiber laminated composites was studied to detect by using acoustic emission and digital image correlation techniques. Acoustic emission data is used to identify and localize transverse cracking by analyzing acoustic emission signal features. The digital image correlation method is used to verify the acoustic emission data obtained at the moment of transverse cracking formation in ۹۰-degree layers. This method makes it possible to obtain acoustic emission data related to transverse cracking damage at a specific location with higher reliability. The manuscript and obtained data as the function of loading force related to cross-ply laminated composite with layup [۰/ 〖۹۰〗_۷/ ۰] is presented. This paper concludes that the acoustic emission method is unreliable. The digital image correlation technique increases the reliability of this method. The method presented in this paper may be used as a powerful analysis tool that can detect the investigated phenomena. Acoustic emission and digital image correlation techniques detect transverse cracking in GFRP, showing higher reliability.

کلیدواژه ها:

Transverse Cracking ، Acoustic Emission ، Digital Image Correlation ، GFRP