Abstract The AUTODYN-2D simulation software was used to study the jet formation of single-cone and biconical shaped charge liner damage influence on RHA target. numerical results show that compared with typical structure, head formed by is faster has better penetration performance On this basis, standoff, cone angle line thickness characteristics target under studied. when standoff increases fr...

Standoff methods of non-destructive testing (NDT) offer flexibility over traditional methods of inspection which typically require physical contact with the material being measured. The benefits are that difficult to access locations can be inspected and measurements of a large area can be made more quickly. Acoustic-laser vibrometry is a robust standoff NDT technique for composite materials, s...

A vertical pendulum apparatus has been used to experimentally investigate the impulse and pressure applied by the impact of wet synthetic sand upon the flat surface of a back supported solid aluminum test block. The transferred impulse and maximum pressure applied to the sample were both found to decrease with increasing standoff distance between the bottom of the sand layer and the impact face...

We analyze systematically the acoustic transients emitted during collapse of a laser-induced cavitation bubble for 0.4 ? ? 5.2. is standoff parameter, ratio distance between bubble's nucleation place and its maximum size. At collapse, signals recorded contain several pressure peaks with rising times as fast 18 ns. The time delay, ? t, these few hundred nanoseconds apart bubbles nucleated close ...

This work focuses on the mathematical combination of magnetogasdynamics (MGD) and Dunn Kang chemical kinetic model with a multi-component Harten–Lax–van Leer Contact (HLLC) local Riemann solver using high-order interpolation schemes. Due to nature nearly hypersonic, unsteady, viscous, reacting MGD flows, gas dissociates which is taken into account 11 species 26 reactions along temperature depen...

A simplified three-dimensional (3-D) zero-thickness shell model was developed to recover the non-spherical response of thick-shelled encapsulated microbubbles subjected to ultrasound excitation. The model was validated by comparison with previously developed models and was then used to study the mechanism of bubble break-up during non-spherical deformations resulting from the presence of a near...

Abrasive waterjet cutting is one of the nontraditional machining processes capable of cutting wide range of hard-to-cut materials. This process incurs relatively higher initial investment, maintenance and operating costs. Therefore optimum choice of the process parameters is essential for the economic, efficient and effective utilization of this process. This paper assesses the influence of pro...

Due to the increase in the number and depth of analyses required over the text, like entity recognition, POS tagging, syntactic analysis, etc. the annotation in-line has become unpractical. In Natural Language Processing (NLP) some emphasis has been placed in finding an annotation method to solve this problem. A possibility is the standoff annotation. With this annotation style it is possible t...