This work reports the high-velocity impact response of multiscale anisogrid composite (AGC) panels. The aim of the present study is to evaluate the influence of surface-modified multi-walled carbon nanotubes (S-MWCNTs) at different S-MWCNTs contents (0-0.5 wt.% at an interval of 0.1 wt.%) on the high-velocity impact responses of E-glass/epoxy AGC. Surface modification of MWCNTs is confirmed by ...

This study presents a novel method to describe the microscale phenomenon of cracks initiation based on sensitivity analysis in laminate fiber-reinforced composites. The failure composite laminates often roots fiber/matrix interfacial debonding. micro-cracking and debonding composites are difficult detect both experimentally numerically. paper shows that stress response transverse ply with respe...

Thin laminates made of high-strength pultruded fiber reinforced polymers (FRP) are increasingly being used to reinforce glue-laminated timber (glulam) beams, creating a new composite glulam (FRP glulam) significantly stronger in bending than a conventional (unreinforced) glulam of equal size. Large timber members have long been recognized for maintaining structural integrity in fires and this p...

Abstract Forming limit curve (FLC) is a valuable tool for predicting the formability of materials. Considering need to develop FLC fiber metal laminates (FMLs), Glare in 2/1 sequence was prepared development FLC. The prepreg used glass stacked between aluminum sheets semi-cured state, which allows enhanced strain percentage and helps predict maximum forming Glare. experimental data accumulated ...

a simple method has been developed for the preconcentration of copper(ii) based on the adsorption of its modified nano polyacrylonitrile fiber. modified nano polyacrylonitrile fiber (panf) was prepared by adding of acrylic fibers to msethanolamine (mma) with different concentration solutions. the stability of a chemically modified nano polyacrylonitrile fiber especially in concentrated hydrochl...

Introduction In the 1970s, exterior bonded steel reinforcement was used sporadically to reinforce bridges to attain higher service load capacities. This steel post-strengthening system consisted of steel straps bonded with epoxies to the exterior of concrete beams. An alternative to the steel retrofit is woven carbon fiber reinforced polymer fabric applied in the same manner as steel. Carbon fi...

The first form of damage in composite laminates is often matrix microcracks that are defined as intralaminar or ply cracks across the thickness of the ply and parallel to the fibers in that ply (see reviews in [1,2]). Tensile loading, fatigue loading, environment, and thermal cycling can all lead to microcrack formation. Microcracks can form in any ply that has a significant component of the ap...

The current study investigated the influence of incorporation graphene nanoplatelets (GNPs) on quasi-static behavior composite and fiber metal laminate (FML) panels. unmodified modified specimens FML panels with 2/1 configuration were fabricated using a hand lay-up method through punch indentation testing. two sets tests conducted flat-ended indenter loading conditions same for all samples, exc...

The use of recycled and renewable components in structural applications supports the development sustainable lightweight structures. Disposed bottle caps can be used to generate eco-friendly honeycomb cores, especially when combined with other components. A natural fibre-based laminate represents an alternative synthetic fibres, matrices, metals skins for sandwich panels. This study evaluates f...