An experimental investigation of shock wave propagation in periodically layered composites

Zhuang, Shiming; Ravichandran, G.; Grady, D. E.

doi:10.1016/s0022-5096(02)00100-x

Cited by 140 publications

(112 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For uniaxial compression, the ratio between the mechanical impedances ( ffiffiffiffiffiffiffi ffi r 0 E p ) of PS and PDMS is quite large (B70). In the macroscopically periodic layered composite consisting of alternating hard and soft layers, propagating shock waves have been demonstrated to undergo multiple reflections because of the mechanical impedance mismatch, and these reflections reduce the propagation velocity of the shock waves, and thereby enhance dissipation of the shock energy 42 . Considering the very thin nature of the H-lamellae, reflected shock waves can nearly immediately affect the penetrating m-projectile within 30 ps (BL 0 /c 0 ) and transfer their momentum in the opposite direction of the penetration.…”

Section: Discussionmentioning

confidence: 99%

High strain rate deformation of layered nanocomposites

Lee

Veysset²,

Singer³

et al. 2012

Nat Commun

195

108

View full text Add to dashboard Cite

Insight into the mechanical behaviour of nanomaterials under the extreme condition of very high deformation rates and to very large strains is needed to provide improved understanding for the development of new protective materials. Applications include protection against bullets for body armour, micrometeorites for satellites, and high-speed particle impact for jet engine turbine blades. Here we use a microscopic ballistic test to report the responses of periodic glassy-rubbery layered block-copolymer nanostructures to impact from hypervelocity micron-sized silica spheres. Entire deformation fields are experimentally visualized at an exceptionally high resolution (below 10 nm) and we discover how the microstructure dissipates the impact energy via layer kinking, layer compression, extreme chain conformational flattening, domain fragmentation and segmental mixing to form a liquid phase. Orientation-dependent experiments show that the dissipation can be enhanced by 30% by proper orientation of the layers.

show abstract

Section: Discussionmentioning

confidence: 99%

High strain rate deformation of layered nanocomposites

Lee

Veysset²,

Singer³

et al. 2012

Nat Commun

195

108

View full text Add to dashboard Cite

show abstract

“…However, we include it here to show that lamination can lead to a smaller damage velocity in a laminated ceramic structure. In a more recent experimental work on wave propagation in layered composites, Zhuang et al [39] have investigated shock wave propagation in stainless steel, aluminum, and glass structures laminated with thin layers of polycarbonate in between. Their results indicate that the shock wave velocity in a layered composite can be either between that of its components or lower than that of both components.…”

Section: Enhanced Performance Of the Laminated Ceramic/polymer Structurementioning

confidence: 99%

Penetration resistance of laminated ceramic/polymer structures

Yadav

Ravichandran

2003

International Journal of Impact Engineering

View full text Add to dashboard Cite

Ballistic penetration experiments have been performed on ceramic tiles laminated with thin layers of polymer in between. The experiment involves shooting a cylindrical rod made of a tungsten heavy alloy (WHA) against an unconfined ceramic/polymer laminated structure that is backed by a 6061-T6 aluminum alloy cylindrical-block, at a velocity ranging between 1000 to 1200 m/s. The residual depth of penetration in the aluminum block is used as a measure of the resistance offered by the laminated ceramic/polymer structure to ballistic penetration. Penetration resistance of the laminated ceramic/polymer structures is compared to that of monolithic ceramic structures of the same total thickness. Experimental results demonstrate that penetration resistance of an unconfined ceramic structure can be improved significantly by laminating ceramic tiles with thin polymer layers in between. This enhanced performance of the laminated structure is attributed to a reduced wave propagation (and damage) velocity in the laminated ceramic/polymer structure and also to the crack arresting feature of the polymer layer. r

show abstract

“…For example, Clements et al (1996) used the method of cells to study stress waves in laminated materials, and their results can be used to explain some features of the experimental data. Berezovski et al (2006) used a finite volume method to study waves in layered nonlinear heterogeneous materials due to impact, and their results are in good agreement with the experimental data of Zhuang et al (2003). One focus of these works was how the cell structure of the composite material influences the waves.…”

Section: Introductionmentioning

confidence: 69%

Mathematical theory and analytical solutions for the wave catching-up phenomena in a nonlinearly elastic composite bar

et al. 2012

View full text Add to dashboard Cite

Cracking induced by tensile wave at the free surface of an impacted target is an important issue in impact-resistant design. Here, we explore the use of material nonlinearity to undermine the strength of the tensile wave. More specifically, we consider waves in a two-material composite bar subjected to impact loading at one end. Multiple reflections cause a tensile wave being transmitted into the second material. The attention is on analytically and numerically studying the phenomenon that the tensile wave catches the first transmitted compressive wave. It turns out that, depending on the interval of the initial impact, catching-up phenomena can happen in two wave patterns. A general mathematical theory is provided to show the existence of these patterns together with some qualitative information. To gain more insights into such phenomena, asymptotic solutions are also constructed, which provide both qualitative and quantitative results on the requirement of the constitutive relation, the time and place at which the catching takes place, and how the initial impact, material and geometric parameters influence the solutions. Numerical simulations are also performed, confirming the validity of the analytical results. The analysis and results presented here could be useful for designing a composite structure that has a good impact-protection performance.

show abstract

An experimental investigation of shock wave propagation in periodically layered composites

Cited by 140 publications

References 17 publications

High strain rate deformation of layered nanocomposites

High strain rate deformation of layered nanocomposites

Penetration resistance of laminated ceramic/polymer structures

Mathematical theory and analytical solutions for the wave catching-up phenomena in a nonlinearly elastic composite bar

Contact Info

Product

Resources

About