...Antoinette M. Maniatty; G. S. Cargill, III; Laura E. Moyer; Chia-Ju Yang An X-ray microbeam study and a polycrystal finite element model of a 10 × 10 μ m 2 section of a 1 μ m thick polycrystalline aluminum film on a silicon substrate are used to investigate the effect of microstructure on thermal...

...V. L. Tagarielli; N. A. Fleck Aluminum layers, 10 – 50 μ m thick, have been diffusion bonded to alumina blocks and subjected to simple shear in order to determine the sensitivity of shear stress versus strain response to layer thickness. No significant thickness effect on strength is observed...

...-rate. The first material type is called elastic-plastic and the second type is called elastic-viscoplastic. In this paper, the influence of viscoplasticity of aluminum and steel on the impact process and the consequences for the coefficient of restitution is analyzed. Therefore, longitudinal impacts...

... of such amplitude, rise time, and duration that the jet is efficiently affected. The copper jet was created by using a shaped charge warhead. An electrode configuration consisting of two aluminum plates with a separation distance of 150 mm was used. The discharge current pulse and the voltages at the capacitors...

... of the fiber and matrix constituents Young’s moduli (GPa) Poisson’s ratio Boron fiber 379.3 0.1 Aluminum matrix 68.3 0.3 Unit cell discretization for FVDAM and QFVDAM Table 2 gives the macroproperties of boron∕aluminum predicted by QFVDAM and FVDAM. These results...

... different metallic circular shells made from copper, aluminum, and mild steel, having distinct geometrical parameters, are extensively investigated. The obtained results show that the higher the biaxial loading complexity provided by the ACTP applied, the greater the energy absorbed by the copper, aluminum...

...H. T. Liu; L. Z. Sun A constitutive model is proposed to investigate the strengthening mechanism and the relationship between nanostructures and effective mechanical properties of the aluminum-based amorphous nanocomposites. A continuum micromechanics-based, three-phase composite model comprises...

... buckling behavior of several tubular structures made from copper, aluminum, and mild steel. The effects of the loading path complexity, the geometrical parameters of the structures, and loading rates (notably the tangential one) on the plastic flow mechanism, the mean collapse load, and the energy absorbed...

..., and then the dynamic stress intensity factors are determined by implementing a numerical inversion of the Laplace transform. As an example, numerical calculations are carried out for a cracked bimaterial plate composed of aluminum (material I) and epoxy or steel (material II). The effects of material properties...

..., with only a minor weight penalty. The 2D plane stress and plane strain bifurcation problems were solved analytically, save for a determinantal equation which was solved numerically. Experiments were performed on aluminum skin/foam core sandwich panels with different combinations of stiff and soft core...

...Hongqiang Chen; Jeffrey W. Kysar; Y. Lawrence Yao Electron backscatter diffraction (EBSD) is used to investigate crystal lattice rotation caused by plastic deformation during high-strain rate laser shock peening in single crystal aluminum and copper sample on 11 0 ¯ and (001) surfaces. New...

... MECHANICS . 04 February 2004 17 March 2004 09 11 2004 aluminium metallic thin films self-diffusion diffusion creep chemical potential electromigration convection internal stresses Self-diffusion can generate stress in a single-component material. During deposition...

...V. L. Tagarielli; N. A. Fleck Plastic collapse modes for clamped sandwich beams have been investigated experimentally and theoretically for the case of aluminium face sheets and a metal foam core. Three initial collapse mechanisms have been identified and explored with the aid of a collapse...

... data for aluminum-aluminum contact, for which some explicit nonlinear characteristics are demonstrated. The theoretical contact-pressure dependence of the second harmonic generation at the contact interface is found to be in qualitative agreement with previous measurements. Contributed...

...Dirk Mohr, Mem. ASME; Mulalo Doyoyo, Mem. ASME A new custom-built universal biaxial testing device (UBTD) is introduced and successfully used to investigate the response of aluminum honeycomb under various combinations of large shear and compressive strains in its tubular direction...

...S. I. Bakhtiyarov, Research Professor; R. A. Overfelt, Professor; A. J. Meir, Professor; P. G. Schmidt, Professor An experimental technique has been developed to measure both axial and transverse velocities and temperature distribution in molten aluminum. Couette flow of liquid aluminum, lead, tin...

... wave equations. Solutions of these equations are found. Results for a particular aluminum conductor steel reinforced (ACSR) conductor are described in detail. The slowest mode is found to be mainly torsional and mainly nondispersive in character. The other two modes are dispersive and have small...

... spheres, Vermaak et al. 34 35 36 determined σ s in Au, Ag, and Pt to range from about 1.2 to 2.6 J/m 2 . We greatly appreciate use of a high-load transducer and the aluminum single crystal provided by Hysitron, Inc. Research support from NSF-DMI-99871863 for two of us (NIT...