Effect of surface geometry on low-velocity impact behavior of laminated aramid-reinforced polyester composite. (December 2016)

• Record Type: Journal Article
• Authors: Ayten, Ali İmran; Ekici, Bülent; Güllüoǧlu, Arif Nihat
• Is Part Of: Journal of composite materials. Volume 50:Number 29(2016)
• Page Start: 4077
• Page End: 4091
• Publication Date: 2016-12
• Subjects: Polymer matrix composites -- impact behavior -- numerical analysis -- mechanical testing -- hand lay-up method; Composite materials -- Periodicals; Composites -- Périodiques; 620.118
• DOI: 10.1177/0021998316632600
• Languages: English
• ISSNs: 0021-9983

Abstract

The aim of this study is to investigate the effect of surface geometry for low-velocity impact applications. To achieve this purpose, aramid fiber-reinforced laminated polyester composite with various geometries such as cylindrical, elliptical, and spherical were prepared, and low-velocity impact properties were investigated numerically and experimentally. All properties such as orientation, fiber volume fraction, matrix material, and average thickness are the same in all samples. Experimental low-velocity impact behaviors of structure were determined by drop weight tester at low velocity 2.012 m/s. Simulations were carried out by LS-Prepost 4.2 and LS-Dyna v971 software. By this way, results of impact tests were verified and modeled with finite element method. Results of the impact tests showed that the elliptical samples have the highest energy absorption capability due to effective stress transfer capacity. According to experimental results, maximum energy absorption rate difference is 17% between elliptical 10 mm and cylindrical 5 mm geometries.