An experimental study of non-destructive testing on glass fibre reinforced polymer composites after high velocity impact event

4th AEROTECH- Innovation in Aerospace Engineering and Technology

航空航天工程

Razali, N.^1 ; Sultan, M.T.H.^1 ; Cardona, F.^1

Aerospace Manufacturing Research Centre (AMRC), Faculty of Engineering, Universiti Putra Malaysia, Malaysia^1

关键词: Glass fibre reinforced polymers;    High-velocity impact;    Matrix cracking;    Non destructive testing;    Nondestructive testing method;    Pressure level;    Visual analysis;    Visual observations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/152/1/012045/pdf
DOI  :  10.1088/1757-899X/152/1/012045

学科分类：航空航天科学

来源: IOP

【 摘 要 】

A non-destructive testing method on Glass Fibre Reinforced Polymer (GFRP) after high velocity impact event using single stage gas gun (SSGG) is presented. Specimens of C- type and E-type fibreglass reinforcement, which were fabricated with 6mm, 8mm, 10mm and 12mm thicknesses and size 100 mm x 100 mm, were subjected to a high velocity impact with three types of bullets: conical, hemispherical and blunt at various gas gun pressure levels from 6 bar to 60 bar. Visual observation techniques using a lab microscope were used to determine the infringed damage by looking at the crack zone. Dye penetrants were used to inspect the area of damage, and to evaluate internal and external damages on the specimens after impact. The results from visual analysis of the impacted test laminates were discussed and presented. It was found that the impact damage started with induced delamination, fibre cracking and then failure, simultaneously with matrix cracking and breakage, and finally followed by the fibres pulled out. C-type experienced more damaged areas compared to E-type of GFRP.