This paper is associated with a video winner of 2020 American Physical Society's Division Fluid Dynamics (DFD) Gallery Motion Award for work presented at the DFD Motion. The original available online Motion, https://doi.org/10.1103/APS.DFD.2020.GFM.V0019.

This paper deals with the development of a numerical simulation methodology for estimating damages in laminate composite materials caused by a low-speed impact. Experimental tests were performed on laminate plates reinforced with woven carbon fibers and epoxy resin. Three thickness plates were evaluated. The impact loads were transversal and punctual. Two lamina failure criteria were evaluated....

Abstract The present work aimed to develop a semi-empirical criterion able describe impact events on GFRP and CFRP (glass carbon fiber reinforced polymers) composite thin laminates: these are generate large damages involving multiple mechanisms such as matrix cracking, failure and, above all, delamination. Main purpose of this research was obtain an accurate numerical description the region in ...

The influence of nanoclay on the impact damage resistance of glass fiber–epoxy composites has been investigated using high-velocity repeated ice impact tests. The incorporation of nanoclay into epoxy enhances the impact resistance of the composites. The impact of ice is a realistic scenario for composite structures such as aircraft fuselages, wing skins and fan blades and it is not a completely...

Abstract The work focuses on the mechanical strength of composite structures with embedded electrical functionalities submitted to low energy impact. This material is defined for aeronautical applications as multilayers glass fibre flat cable layers embedded. main question about damage involved by impact, and its influence cables layer performances. impact leads failure no external signs insula...

This article concerns the experimental and numerical study of post-impact damage propagation in thin carbon/epoxy woven composite laminates loaded fatigue tension. Low velocity normal drop weight impact tests are first performed. Post-impact tensile then carried out. They controlled displacement. The monitoring is based on Digital Image Correlation RX tomography. influence energy loading studie...

A high pressure drop happens when heavy oil with high viscosity moves through the oil pipeline. A variety of methods to avoid this pressure drop is available. One of which is injection of chemicals to reduce the viscosity and ultimately reduce pressure drop. Using the pipesim software, the effect of dispersion of nano and micro-particles into the oil has been simulated to study the amount of th...