Experimental investigation on trajectory stability of high-speed water entry projectiles

Experimental investigation on dynamic failure of water-filled vessel subjected to projectile impact

Dynamic response and failure of carbon/epoxy composite sandwich subjected to underwater impulsive loading

Experimental analysis of an attenuation method for Hydrodynamic Ram effects

This study is primarily focused on analyzing the consequences of sea water absorption and desorption on the long-term durability of glass fiber/epoxy (GE) and 0.5 wt graphene oxide (GO) dispersed glass fiber/epoxy (GO-GE) composites. Both GE and GO-GE composite specimens were initially exposed to natural seawater for a duration of 9 months. Desorption was also carried out for some of the seawater saturated samples. Before ageing, flexural test and dynamic mechanical analysis were carried out to understand the impact of GO incorporation on the characteristics of GE composite. Using gravimetric analysis, the seawater uptake kinetic curves were determined for both the composites. Long-term durability was assessed by performing stepwise isothermal creep and recovery tests in 30Â°C to 120Â°C temperature range and analysis of the results involved the use of time-temperature superposition principle for constructing the creep master isotherms in different conditions (before ageing or dry state, saturated state, and desorbed state). Â© 2020 Society of Plastics Engineers

Effects of seawater absorption and desorption on the long-term creep performance of graphene oxide embedded glass fiber/epoxy composites

Experimental investigation on dynamic failure of carbon/epoxy laminates under underwater impulsive loading

The experiments and numerical simulations of projectile penetrating into water-filled container with aluminum target plates were conducted. The motion of projectile and cavity evolution of hydrodynamic ram in water were assessed. The results show the propagation characteristics of initial shock wave of hydrodynamic ram in the container. The study presents that the plugging with outward deformation was the main failure mode of the target plates when the velocity of projectile was below 270 m/s. With the velocity of projectile increasing, the ultimate deformation of plates increased linearly and the petaling failure appeared on the rear plates. Four kinds of typical failure modes for plates of water-filled container were concluded through the combining results of experiment and simulation. In addition, the effect of plate thickness on the plastic deformation were discussed, and the quantitative relation among the deformation of target plates, velocity of projectile and plate thickness were established.

Lu Shi

Papers

Experimental investigation on dynamic failure of water-filled vessel subjected to projectile impact

Experimental investigation on dynamic failure of carbon/epoxy laminates under underwater impulsive loading

A combined experimental and numerical investigation on projectiles penetrating into water-filled container