The role of temperature on impact properties of Kevlar/fiberglass composite laminates

On the impact response of electrified carbon fiber polymer matrix composites: Effects of electric current intensity and duration

“…Although to the best authors' knowledge investigation presented here is the first of its kind, several experimental studies on the effects of temperature on the impact response of polymer matrix composites were conducted in the literature [8][9][10]. In these studies low velocity impact tests were conducted using an environmental chamber to ensure specific temperature conditions.…”

Effect of post-cure temperature and different reinforcements in adhesive bonded repair for damaged glass/epoxy composites under multiple quasi-static indentation loading

“…post cure) temperature. At optimum post cure temperature, high bonding strength between fibers and matrix is expected due to better cross linking of the molecules in the polymer matrix [43][44][45][46][47]. In detail, increasing post cure temperature results in slight softening the matrix system and therefore enhancing the bond stuck between matrix and fibers systems.…”

“…The thermosetting epoxy matrix material undergo chemical cross-linking through the curing process, the ultimate cured system does not reflow or melt when exposed to high temperature (unlike thermoplastic systems), but encounter a phase change or slight softening at higher temperatures. [43][44][45][46][47]. In practice, the mobility of the molecules in the polymer chains increase considerably at elevated temperature.…”

“…These features were attributed due to the absence of proper fiber reinforcements in the perpendicular directions to withstand the back face tensile stress developed under local bending load. As already mentioned, with increasing post cure temperature, the polymer matrix becomes softer so that at the highest temperature laminate bending increases [43][44][45][46][47]. High bending of the ductile matrix at elevated post cure temperature combined with poor back face tensile resistance offered by the neat epoxy (Type I) and particulate fibers (Type II) induces the premature penetration and back face splitting of these specimens.…”

Durability and failure mechanics of woven carbon composites under repeated impact loading in Arctic conditions

“…Ibekwe et al (2007) investigated the impact response of glass fiber-reinforced unidirectional and cross-ply laminated composite beams at 20, 10, 0, −10 and −20 • C, and observed that more damage was induced in the specimens impacted at lower temperature than those at higher temperatures. Salehi-Khojin et al (2006) investigated three combinations of fiberglass and Kevlar woven composites. Three different impact energies were tested (8, 15, and 25 J) for temperatures ranging from −50 to 120 • C. They reported that the deflection, maximum force and energy absorption increases with increasing temperature (from −50 to 120 • C) and impact energy (from 8 to 25 J).…”