Laser driven shockwaves from nanosecond pulsed lasers were evaluated for pressure magnitude and duration using photon Doppler velocimetry (PDV). Specific investigations performed on Ti-6Al-4V alloys 7085-T7651 aluminum with laser full-width half-max pulse lengths ranging 6 to 20 ns intensities of 2–10 GW/cm2. The rear surface velocity data obtained a heterodyne PDV system an automated signal pr...

This paper presents new insights into the influence of explosive charge backing on impulse transfer and transient response characteristics plates subjected to close-proximity air blast loading. The results combine experimental computational studies show critical backing, which caused between a 3-5 times increase in when was metal-backed. permanent deflections from metal-backed detonations were ...

conclusions it can be indicated that reinforcing components of emotional intelligence, especially emotional-awareness and impulse control, are effective methods to develop against substance use in among drug-dependent individuals. background drug addiction is one of the most significant problems related to general health in the world, creating various mental problems in addicts and leading to s...

Additive manufacturing of metallic materials generates strong crystallographic textures, leading to anisotropic elastic properties on the macroscopic scale. The impact processing parameters resulting texture requires suitable techniques for prediction and experimental determination exploit anisotropy in design process. Within this study mechanical as well microstructure based approaches are app...

Experimental investigation of the coefficient of sliding friction in rock at normal stress and sliding velocity of typical earthquakes (10–100 MPa and 0.01–1 m/s) is necessary to develop velocity-dependent constitutive relations useful for earthquake rupture simulations. The velocity dependence of rock friction is best explored in parametric studies of interfacial friction by imposing step-like...

BACKGROUND Unilateral below-knee amputees often develop comorbidities that include knee joint disorders (e.g., intact leg knee osteoarthritis), with the mechanisms leading to these comorbidities being poorly understood. Mechanical knee loading of non-amputees has been associated with joint disorders and shown to be influenced by walking speed. However, the relationships between amputee knee loa...

The modelling of consequences to built infrastructure when subject to blast loading is well developed; however, there is considerable uncertainty and variability with explosive loading and system response; which provides many challenges for collateral damage estimation. In this paper, structural facades are assessed – with a focus on glazing – as this is a structural and load-capacity system th...

The loading conditions used in some current in vivo and in vitro blast-induced neurotrauma models may not be representative of real-world blast conditions. To address these limitations, we developed a compressed-gas driven shock tube with different driven lengths that can generate Friedlander-type blasts. The shock tube can generate overpressures up to 650 kPa with durations between 0.3 and 1.1...