高压物理学报

In Situ Electrical Measurement in Diamond Anvil Cell Equipped with Microcircuit by Integration Technology

GAO Chun-Xiao

2013, 27(1): 1-18. doi: 10.11858/gywlxb.2013.01.001

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Abstract:
Diamond anvil cell (DAC) can produce more than 400 GPa ultra-high pressure and have been used widely in high pressure science. By means of laser heating, about 6 000 K high temperature can be realized in DAC. In the past 20 years, many technical progresses in microcircuit fabrication on DAC have bee...

Axial Friction Calibration for 3 GPa Molten Salt Medium Triaxial Pressure Vessel under High Pressure and High Temperature

LIU Zhao-Xing, ZHOU Yong-Sheng, LIU Gui, HE Chang-Rong, ZHONG Ke, YAO Wen-Ming, HAN Liang, DANG Jia-Xiang

2013, 27(1): 19-28. doi: 10.11858/gywlxb.2013.01.002

PDF (706)

Abstract:
The axial friction calibration of 3 GPa molten salt medium triaxial pressure vessel under high pressure and high temperature is performed based on the calibration of the temperature and confining pressure of the apparatus, which mainly analyses the effects from different experimental conditions, suc...

Effects of Pressure on the Structure of CoFe2O4/SiO2 Nanocomposites

LI Ji, WANG Li, JIA Xiao-Peng, LI Hai-Bo

2013, 27(1): 29-33. doi: 10.11858/gywlxb.2013.01.003

PDF (441)

Abstract:
Combined with sol-gel technology and high-pressure and high-temperature technique, CoFe2O4/SiO2 nanocomposites are fabricated. The structure and magnetic property of the nanocomposites are monitored by X-ray diffraction (XRD), scanning electron microscope (SEM) and vibrating sample magnetometer (VSM...

Enlarged Scale Tests on Diamond Synthesis by Pressure Transmitting and Sealing Medium with Inside Diameter of 42 mm and Composed of Kaolinite and Dolomite

YANG Bing-Fei, LIU Jie

2013, 27(1): 34-39. doi: 10.11858/gywlxb.2013.01.004

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Abstract:
Kaolinite can take the place of pyrophyllite in the use of pressure transmitting and sealing medium due to its good sealing performance, pressure transmitting property and machining capability. The selected kaolinite sample in this paper is not pure mineral, but it is more suitable for the pressure ...

Research on Formation Process of Wrapping Explosively Formed Compound Penetrator

WANG Shu-You, MEN Jian-Bing, JIANG Jian-Wei

2013, 27(1): 40-44. doi: 10.11858/gywlxb.2013.01.005

PDF (548)

Abstract:
Wrapping explosively formed compound penetrator (WEFCP) under blasting of shaped charge covered by reactive material is introduced. Shaped charge with various thickness and small length-diameter ratio is analyzed using numerical simulation software AUTODYN. The cover effects of main structural param...

Detonation Characteristics of Emulsion Explosives Sensitized by MgH2

CHENG Yang-Fan, MA Hong-Hao, SHEN Zhao-Wu

2013, 27(1): 45-50. doi: 10.11858/gywlxb.2013.01.006

PDF (545)

Abstract:
The theoretical calculations and underwater explosion experiments are performed to investigate the detonation characteristics of the emulsion explosive sensitized by MgH2. The results show that compared with the emulsion explosives sensitized by glass microspheres, the emulsion explosive sensitized ...

Shock Synthesis of N-Doped Titania and Its Photocatalytic Activity under Visible Irradiation

LIU Jian-Jun, ZHANG Hong-Ling, CHEN Peng-Wan, GAO Xiang, CUI Nai-Fu

2013, 27(1): 51-56. doi: 10.11858/gywlxb.2013.01.007

PDF (406)

Abstract:
Shock transformation and shock-induced chemical reaction in materials can lead to their obvious changes of physical and chemical properties. In this paper, the powder mixtures of nitrogen-rich of C2N4H4 and P25 TiO2 or metatitanic acid were shocked by the impact of flyer plates driven by explosive d...

A High Temperature SHPB Impact Experimental Technique and Its Application

XU Jin-Yu, LIU Jian, FAN Fei-Lin, REN Wei-Bo, XI Yang-Yang, YANG Kun

2013, 27(1): 57-62. doi: 10.11858/gywlxb.2013.01.008

PDF (491)

Abstract:
A set of temperature-controlling system adapted to high temperature split Hopkinson pressure bar (SHPB) experiments is developed and presented. Using this high temperature SHPB system comprised of a temperature-controlling system and a general 100 mm SHPB apparatus, the dynamic mechanical properties...

Experimental Study on Shape and Evolution of Water Column Caused by Near Surface Explosion in Deep Water Area

LI Mei, WEI Ji-Feng, WANG Shu-Shan, MA Feng

2013, 27(1): 63-68. doi: 10.11858/gywlxb.2013.01.009

PDF (337)

Abstract:
In order to investigate the shape and evolution process of water column caused by a near surface explosion in deep water situation, underwater explosion experiments with 1 kg of RDX charge at different detonation depths are carried out using a high-speed camera. The evolution characteristics and par...

Strengthening and Toughening Effect of Ceramic Fiber on Plain Concrete

SU Hao-Yang, XU Jin-Yu, GAO Zhi-Gang, LI Zhi-Wu, YANG Kun

2013, 27(1): 69-75. doi: 10.11858/gywlxb.2013.01.010

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Abstract:
A hydraulic pressure testing machine and a 100 mm diameter split Hopkinson pressure bar (SHPB) apparatus are used to investigate the quasi-static and dynamic mechanical properties of ceramic fiber reinforced concrete (CRFRC), which are compared to those of carbon fiber reinforced concrete (CFRC) at ...

Numerical Simulation of Cylindrical Shell Loaded by Explosive Rods (Ⅱ): Decoupling Analysis and Experimental Validation

MAO Yong-Jian, LI Yu-Long, CHEN Ying, DENG Hong-Jian, HUANG Hai-Ying, ZHOU Qing, HUANG Han-Jun

2013, 27(1): 76-82. doi: 10.11858/gywlxb.2013.01.011

PDF (443)

Abstract:
According to the previous simulation results of two-dimensional fluid-structure interaction, the model of impulsive load generated by a single explosive rod and shaped by the buffer is built. Then the loads generated by multiple explosive rods are superposed and applied on the surface of the cylindr...

Distribution Law of Pressure on Liner Surface under Multi-Point Initiation

ZHAO Chang-Xiao, LONG Yuan, JI Chong, LI Yu-Chun, XIE Quan-Min, LU Liang

2013, 27(1): 83-89. doi: 10.11858/gywlxb.2013.01.012

PDF (589)

Abstract:
In order to investigate the distribution law of pressure on the liner surface and the effect of initiation point parameter on the pressure distribution, the interaction of detonation waves with each other and with the liner is simulated by LS-DYNA software. The simulation results coincide well with ...

A Numerical Study on Interface Evolution and Jet Development of a Shocked SF6 Gas Bubble

ZOU Li-Yong, LIU Cang-Li, PANG Yong, LUO Xi-Sheng, BAI Jin-Song, YANG Ji-Ming

2013, 27(1): 90-98. doi: 10.11858/gywlxb.2013.01.013

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Abstract:
The Richtmyer-Meshkov instability occurring on a heavy gas (SF6) bubble surrounded by N2 is numerically investigated in the present work. The interface evolution, shock focusing and jet development are emphasized. Numerical schlieren images and distributions of pressure, density and vorticity are ex...

Influence of Surface State on the Crater Formation of Metallic Material Surface Irradiated by High Current Pulsed Electron Beam

WANG Xiao-Tong, PENG Dong-Jin, ZOU Yang, WAN Ming-Zhen, CAI Jie, GUAN Qing-Feng

2013, 27(1): 99-104. doi: 10.11858/gywlxb.2013.01.014

PDF (321)

Abstract:
In order to investigate the influence of crystallographic properties of materials on the formation mechanism of surface craters, high current pulsed electron beam (HCPEB) was used to irradiate a 304 austenitic stainless steel with and without shot peening treatment. The morphologies of surface crate...

Optimal Structural Design of Stuffed Shields with Kevlar Fiber Clothes against Hypervelocity Impact

ZHANG Bao-Xi, HA Yue, DENG Yun-Fei, PANG Bao-Jun

2013, 27(1): 105-112. doi: 10.11858/gywlxb.2013.01.015

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Abstract:
A series of impact experiments are conducted to investigate the ballistic performances of stuffed Whipple shields with Kevlar fiber clothes using a two-stage light gas gun facilities. Based on the impact limit curve of Nextel/Kevlar stuffed Whipple shields, the protective performances of Kevlar stuf...

Interference on Logic Chips due to Plasma Created by Hypervelocity Impact on 2024-T4 Aluminum Target

TANG En-Ling, ZHANG Qing-Ming, WANG Meng, XIANG Sheng-Hai, ZHANG Wei, YANG Ming-Hai, LI Le-Xin, YU Hui, LUO Rong-Mei, ZHAO Xin-Ying

2013, 27(1): 113-118. doi: 10.11858/gywlxb.2013.01.016

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Abstract:
To acquire the interference status of typical logic chips in spacecraft caused by plasma generated from a hypervelocity impact, the triple Langmuir probe system established by selfishness is used for diagnostics of plasma characteristic parameters created by 2024-T4 aluminum projectile hypervelocity...

Calculation of Detonation Parameters of Special Explosives

WANG Xiao-Hong, LI Xiao-Jie, LI Rui-Yong, YAN Hong-Hao

2013, 27(1): 119-124. doi: 10.11858/gywlxb.2013.01.017

PDF (539)

Abstract:
The calculation code based on BKW (Becker-Kistiakowsky-Wilson) equation of state was programmed, which was not only able to calculate the detonation parameters of traditional explosives containing C, H, O and N elements but also calculate those of some special explosives containing plenty of other m...

Measurement of Dynamic Friction Coefficient of Several Typical Pyrotechnics

JIANG Xi-Bo, GUO Song, FENG Song, PENG Jin-Hua

2013, 27(1): 125-131. doi: 10.11858/gywlxb.2013.01.018

PDF (463)

Abstract:
Friction is important in the production and application of pyrotechnics, and the dynamic friction coefficient is a key parameter for quantitative analyzing the friction work. A new method for determining the dynamic friction coefficient is presented, which combines the physical model of MGY-1 fricti...

Detonation Propagation in 180 Ribs of an Insensitive Explosive

JIANG Yang, LI Lei, WANG Tao, ZHONG Min, LI Ping, BAI Jin-Song

2013, 27(1): 132-136. doi: 10.11858/gywlxb.2013.01.019

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Abstract:
Non-ideal detonation wave propagation in 180 ribs of an insensitive high explosive is studied using the DSD (Detonation Shock Dynamics) method which is combined with the LS (Level Set) method in body-fitted coordinate. The rule of detonation wave propagation in 180 explosive ribs is obtained through...

Quality Changes of Strawberry Nectar Processed by Ultra High Pressure during Storage

XU Wen-Wen, CAO Xia-Min, LIU Feng-Xia, LIAO Xiao-Jun

2013, 27(1): 137-146. doi: 10.11858/gywlxb.2013.01.020

PDF (751)

Abstract:
The bacterial phase and qualities of strawberry nectar treated by ultra high pressure (600 MPa, 4 min) at storage of 4 ℃ for seven months are studied. The experimental results show that there are no aerobic bacteria, yeasts or molds detected in the strawberry nectar during storage, from the microbia...

Review on Sterilization Effects of High Pressure Thermal Sterilization on Bacterial Spores

ZHANG Zhong, HU Xiao-Song, LIAO Xiao-Jun, ZHANG Yan

2013, 27(1): 147-152. doi: 10.11858/gywlxb.2013.01.021

PDF (655)

Abstract:
This review introduces in detail the advantages and applications of high pressure thermal sterilization. The latest research results on the sterilization effects and kinetics of various bacterial spores by this technology are described deeply and comprehensively, and the sterilization mechanism is a...

2013 Vol. 27, No. 1

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