Dynamic compressive response of 3D GFRP composites with shear thickening fluid (STF) matrix as cushioning materials

Abstract

Whereas most previous studies have focused on improving the penetration resistance of Shear Thickening Fluids (STFs) treated composites, in this study, the dynamic compressive response of single and multi-ply 3 D E-Glass Fiber Reinforced Polymer (GFRP) composites with the STF matrix was investigated by using a drop-weight low-velocity impact test. The experimental results revealed the STF improved the compressive and cushioning performance of the composites such that with increasing its concentration, further improvement was observed. The five-ply composite containing the STF of 30 wt% silica nanoparticles and 1 wt% carbon nanotubes (CNTs) reduced the applied peak force by 56% and 26% compared to a steel plate and five-ply neat samples, respectively. A series of repeated impacts was performed, and it was found that the performance of high-concentration composites is further decreased under this type of loading.

Multi-response optimization of crashworthy performance of perforated thin walled tubes

“…Plastic deformation modes are typically quite comparable to those produced by quasi-static loading for low velocity impacts. 28,29…”

“…Plastic deformation modes are typically quite comparable to those produced by quasi-static loading for low velocity impacts. 28,29 For industrial necessities as assembly and to reduce the weight of the energy-absorbing components, it is advised to provide cutouts like holes in the body of the structure. Cutouts have a negative impact on the energy-absorbing members' ðEACÞ.…”

Investigating the energy absorption properties of sandwich panels filled with shear thickening fluid with a weight fraction of 35% under low-velocity impact

“…Shear thickening fluid (STF) is a type of non-Newtonian fluid that exhibits a rapid and substantial augmentation in viscosity, often by several orders of magnitude, in response to escalating shear rates. [1][2][3][4][5][6] The behavior of STF resembles that of a solid-like material when subjected to applied stress due to the elevation in viscosity. Subsequent to the cessation of external loading, the STF reverts to its initial liquid state.…”

High Strain Rates Impact Performance of Glass Fiber-Reinforced Polymer Impregnated with Shear-Thickening Fluid

“…[3,4]. To improve the dynamic performance of a GFRP under impact loading, studies have developed GFRP impregnated with shear-thickening fluid (GFRP-STF) composite materials and their mechanical properties have been examined under high-and low-velocity impacts [5][6][7][8][9][10][11][12]. Nevertheless, under extreme impact loads caused by explosions, vehicular and ship collisions, rockfall impacts, and other reasons, the ultimate failure strength and energy absorption capacity of a GFRP-STF composite may vary considerably owing to the strain-rate effect.…”

“…Simultaneously, the ballistic tests showed that the STF effectively reduced the penetration depth of the GFRP, whereas the rheological performance of the STF had a considerable impact on the ballistic performance. Regarding the compression responses of GFRP-STF composites, Jeddi and Yazdani [7] found that a STF improves the compression properties of a GFRP, which are enhanced with the increase in the STF concentration and the modification of the rheological properties. On this basis, Jeddi and Yazdani [8] reported that the STF concentration also had a considerable effect on the puncture resistance of the GFRP-STF fiber fabric.…”