The High Energy Photon Source (HEPS) located at Huairou’s Science City in Bejing, one of the key projects listed in the “13^th Five-year Plan for national major scientific and technological infrastructure”, has been under construction since 2019. HEPS will be a world-leading 4^th generation high energ...

The combination of synchrotron X-ray radiation and static high pressure technology based on diamond anvil cell (DAC) and large volume press (LVP) has fundamentally promoted the development of high pressure science. Shanghai Synchrotron Radiation Facility (SSRF) is one of the advanced third generatio...

Synchrotron radiation source can offer wide-spectrum, high-energy, high-brightness, and low-emittance, which has been widely used in high pressure research. Among the X-ray techniques, the X-ray diffraction is one of the most basic and widely used experimental techniques, and is likely to remain the...

FENGHUANG diffractometer at CMRR is a neutron diffractometer dedicated for high pressure experiments. After updating the neutron guide and monochromator, now the neutron flux at the sample position can get increased up to 2.84×10⁶ ns^–1·cm^–2.Based on the FENGHUANG diffractometer, comprehensive high p...

Magnetotelluric (MT) surveys reveal that high conductivity layer appear in the upper crust beneath Tibet. Granite is the main rocks composed of upper crust, playing an important role in the process of crustal evolution. Electrical conductivity of granite during partial melting is of great significan...

The effect of pressure on quenching process of commercial pure titanium (CPTi) has been studied.Annealed, water quenched and high temperature and high pressure (HTHP) treated samples were prepared for comparison. The phase composition and microstructure were analyzed, and the microhardness was measu...

The shock-ramp wave loading experiment is fulfilled using pulsed power generator CQ-4. For RDX single crystal samples with the orientations of (210) and (100), the interfacial velocity profiles between the RDX sample and LiF window are obtained by photonic Doppler velocimetry (PDV). The experimental...

In view of the problems of local corrosion, uniform corrosion and pipe body cracking of coiled tubing (CT) in formation containing CO₂ and high-temperature and high-pressure gas well, the CT corrosion failure was investigated firstly, and the corrosion failure mechanism was analyzed. The numerical m...

Diamond/aluminum composites with a high thermal conductivity of 529 W/（m·K） were prepared using pure aluminum as the matrix and 50 vol.% Ti-coated 200 μm diamond as the filling material within10 min by high temperature (700 ℃) and high pressure (3 GPa) powder metallurgy method. The morphology and pr...

In order to study the influence of thickness and structure configuration of hollow tempered laminated glass on its impact resistance, DHR-9401 drop hammer impact testing machine combined with the method of minimum fragmentation energy was used in this experiment, and the impact effect was evaluated ...

Because of their excellent lightness and crashworthiness, metal thin-walled structures have been widely used in the collision kinetic energy dissipation system of vehicles such as automobiles, airplanes and trains. In this paper, the deformation mode, energy absorption capacity, specific energy abso...

Cellular materials, characterized by their light weight and energy absorbing, etc., have broad potential applications in the fields of loading-path control, explosion and impact protection. In this paper, the discrete element method of lattice-spring model is utilized to simulate the early impact re...

In order to reveal the influence of impact loading on the microscopic pore structure of anthracite, the shock and stress waves of the impact stress in different attenuation processes were simulated by using the split Hopkinson pressure bar (SHPB) impact loading system, and the fractal characteristic...

In order to accurately fit the failure criteria in JC failure model, BW failure model, and MMC failure model, numerical simulations for metal materials Q345B and 921A under various loading conditions of compression, torsion, tension were performed in this work. The variation of stresses, indicated b...

In order to study the penetration performance of small tungsten spheres on the human equivalent target with body armor, the test of small tungsten spheres penetrating 25 mm thick pine target with Class Ⅲ soft body armor is carried out. On this basis, the equivalent relationships between 25 mm thick ...

A deflagration experiment of methane/air premixed gas with or without wire mesh was carried out in the self-design square pipe. The effects of the mesh number and layer number of the wire mesh on the deflagration overpressure and temperature were discussed. The results show that the wire mesh can ef...

Thin-walled tube is a common energy-absorbing structure. The introduction of folds in thin-walled tube can induce the deformation of thin-walled tube, reduce the initial peak force of buckling of thin-walled tube and improve the energy absorption of thin-walled tube effectively. At present, when the...

In the field of biomass resource utilization, the steam explosion technology serves as the key technology to break the anti-degradation barrier of biomass and realize biorefineries, which is characteristic of clean, short-term and high efficiency. In this paper, the energy composition and transforma...