In order to improve the X-ray image quality of the explosive, we performed experiments in which a series of X-ray phase contrast images of the defects in polymer bonded explosive (PBX) under different pressures were obtained using the X-ray in-line phase contrast imaging technology.In the images obt...

We developed a device for measuring high-pressure viscosity of liquids.The device consists of a diamond anvil cell, a microscope and a CCD detector, by which pressures can be determined using the ruby fluorescence technique.It is simple and convenient to measure the viscosities of liquids under diff...

The effects of pressure on the density, particles morphology and abrasion resistance of polycrystalline cubic boron nitride (PCBN) composite were investigated in detail using the melt infiltration method with cemented carbide under high pressure and high temperature conditions.The measured results s...

Raman spectra of Td-WTe₂ bulk single crystal sample with the incident laser (532 nm) beam direction parallel to the c axis were obtained under pressures up to 17 GPa.Based on the first-principles calculations, we analyzed the Raman spectrum of Td-WTe₂ bulk single crystal obtained at ambient temperat...

The vibrational and structural properties of tetramethylsilane were investigated using the Raman scattering measurements under pressures ranging from 68.9 to 142.2 GPa and at room temperature.The results revealed that 3 vibrational modes of tetramethylsilane under 68.9 GPa remain locked in a certain...

Using the in-house large-eddy simulation code MVFT, we investigated the three-dimensional multi-mode Richtmyer-Meshkov (RM) instability under multiple impingements and its dependence on initial conditions.After the initial shock, the width of the turbulent mixing zone (TMZ) grows with time in power-...

One-dimensional plane impact experiments with power gun were conducted on JOB-9003 explosives.The Hugoniot relation of unreacted JOB-9003 explosive was obtained by measuring the particle velocities at different depths with magnetic gauges.Moreover, the trinomial equation of state was calibrated with...

In this work, the chemical vapor deposition method was adopted to deposit a single-layer graphene on a copper foil, which was then transferred to a fused silica substrate using the wet chemical method.Then, using the phase-contrast microscopy and the scanning electron microscopy, we studied the dama...

In this paper, to explore the mechanism of advanced active earth-penetrating weapons, we propose a split kinetic energy projectile.The target penetrating processes of the split projectile were analyzed using the finite element method, and the calculation model was verified by comparing the results o...

In order to verify the probability of hand-thrown needles penetrating a glass plate, the damage features and the ballistic limit velocity were studied using both one-stage gas gun experiments and AUTODYN simulations on the glass plate impacted by common steel needles at velocities of tens of meters ...

A semi-closed pressure-loading vessel was designed to test the dynamic pressure bearing capacity of a laser ignition window.The mathematical model that describes the relationship between the propellant combustion and the pressure in the vessel was built and its validity was verified.The calculated r...

In order to investigate the main factors influencing the pulling force of a self-propelled straight-swirling integrated jet bit, we studied the effects of the inlet flow rate, wellbore diameter, and spray distance on the pulling force by combining experimental measurements and numerical simulations....

As a sharp phase transition phenomenon, the boiling liquid expanding vapor explosion (BLEVE) is widely applicable to facilities related with launching and propulsion.In this work, the VOF (Volume of Fraction) model was employed in the simulation of the two-phase flow field, and the source item in th...

In order to study the shelf life and quality of vinasse shrimps after sterilization, we conducted thermal and high hydrostatic pressure (HHP) treatments in the sterilization process.The curves that describe the relationship between the total plate count and the sterilizing time are obtained, showing...