Characterization of Compressive Damage Behavior of Steel and Aluminum

Abstract

Compressive deformation is imposed on aluminum cast 195-76 and ferritic stainless steel 18-8specimens at high strain rateusing perforation split Hopkinson pressure bar (P-SHPB).The energy levels and the compressive dynamic failure behavior of the materials were investigated at high strain rate deformation between 950 and 5700 s -1 . This paper investigates the effects of specimen's thickness andimpact energy on failure behavior with correlation of P-SHPB and SHPB.The relationship of different damage mode can be followed with the stress-strain relationship, strain rate and energy absorbed by steel and aluminum specimens.

Compression of the Material Characteristics of Steel, Aluminum, Wood and Woven Graphite Epoxy Composites in Response to High Strain Rate Load

“…Previous laboratory works proved that depending on the nature of the penetrator head, conical hemispherical penetrator was found to be more effective in penetrating or perforating the composite plate than spherical penetrator [27] . The authors [28][29][30] have analyzed the high-energy penetration/perforation mechanics of steel, aluminum, wood and the woven graphite epoxy composites individually and confirmed that for all of these materials, strain rate, ultimate strain, and energy absorption increase with increasing perforation energy.…”

“…Integrating this wave provides the energy absorbed-time history, force-displacement, stress-strain, and other relevant data with which the specimen damage can be characterized. For interested readers the detail of the experimental set up can be found in other published papers of the authors [27][28][29][30][31] . The specimen is placed in a penetrator holder, which is mounted at the end of the incident bar.…”

Effect of weave pattern on high strain rate performance of glass/polytetrafluoroethylene composites

“…Research performed on various materials ranging from polymers, metals and composites have proven the rate dependency of these materials. [1,2,[5][6][7][8][9][10] Most of the studies available on HSR response of composite materials are for thermoset-based composites such as E-glass/vinylester, [11] glass/epoxy, [12,13] carbon/epoxy, [14][15][16] and Kevlar/epoxy. [17,18] These studies reported the influence of fiber orientation, stitching of fibers and sizing of fibers on the HSR response of composites.…”

Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

“…Fiber reinforced plastic (FRP) composites have gained importance in the past few decades as a new class of materials for lightweight applications that require high strength and high modulus to weight ratio coupled with high impact resistance. [ 1 ] Depending on the application, a variety of fiber types are available, such as, glass and carbon fiber for structural applications [ 2,3 ] : Kevlar, ultra‐high molecular weight polyethylene, basalt, and S‐2 glass are few of the preferred reinforcement types for protective structures involving impact. [ 4,5 ] Kevlar owing to its excellent specific strength and specific stiffness is preferred for a wide range of impact‐resistant and structural applications.…”

“…[ 9 ] The rate‐dependent behavior of different materials has been discussed in the literature. [ 2 ] FRP composites are no different and their properties vary with the rate of loading. [ 10 ] Several researchers studied the rate‐dependent behavior of Kevlar fiber‐based composites and reported increasing strength as a function of the rate of loading.…”