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The anisotropy characteristic of rock material described by the stress softening criterion in civil engineering Haibo Zhang1, a, Qunyi Liu2,b 1Department of Marine Engineering,Guangzhou Maritime College,Guangzhou Guangdong 510330,China 2Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China azhanghaibo2009@126.com, bliuqunyicsu2009@126.com Keywords: rock material; stress; softening behavior; anisotropy characteristic,civil engineering Abstract.
This model is valid for homogeneous, isotropic, continuous materials that exhibit linear stress-strain behavior with no hysteresis on unloading.
This model is valid for homogeneous, isotropic, continuous materials that exhibit linear stress-strain behavior with no hysteresis on unloading.
This model is valid for homogeneous, isotropic, continuous materials that exhibit linear stress-strain behavior with no hysteresis on unloading.
International Journal of Rock Mechanics and Mining Sciences, 36(1999) 777-809

Prepartion and Properties of Zinc-doped Hydroxyapatite Whisker Duancheng Wang1, Tingting Yan1, Weibo Zhu1, Minghua Huang2,, Qinghua Chen1,* 1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, 2Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology.
Kunming, 650093, China * Corresponding author, E-mail: chenqinghua_yn1@163.com, 625296056@qq.com Keywords: whisker, hydroxyapatite, bone repair materials, zinc-doped Abstract.
Hydroxyapatite is well used as bone repair materials.
Journal of Salt Lake Research, 2003,1l(4):57-66
Journal of Biomedical Materials Research, 2002, 59(2):312–317

As a word, heavy metal Hg resistance of YK is lowest in five materials, but resistance of FX was higher than other materials.
Materials and methods Site and materials description.
Journal of Lake Sciences, Vol. 2 (2001), p. 163-168
International Journal of Molecular Sciences, Vol. 3 (2002), p. 965-984
Southwest China Journal of Agricultural Sciences, Vol. 23 (2010), p. 119-122

Comparison of four Thermo-Mechanical Models for Simulating Reactive Flow in Porous Materials Marcelo J.S. de Lemos 1,a, Maximilian S.
The objective of this paper is to present numerical simulations of combustion of an air/methane mixture in porous materials using a model that considers the intra-pore levels of turbulent kinetic energy.
Science Vol. 34 (2008) p. 667
Saito, M.J.S. de Lemos: Journal of Heat Transfer Vol. 128 (2006), p. 444
[28] XY Zhou, JCF Pereira: Fire and Materials Vol. 22 (1998), p. 187

NDT was first used for military purpose but nowadays it is used widely in many fields such as composite materials, medical purposes, fire safety, laser welding, food safety and quality and characterization of materials.
It is used for condition monitoring of composite materials and concrete and to check alignment of parts[1].
Giorleo, Luca Journal of Materials Processing Technology 155-156, (2004), 1132-1137
Journal of Nuclear Materials 367-370(Part 2), (2007), 1492-1496
Journal of Applied Polymer Science 88: (2003). 278–286

And the usages of some corresponding methods in manufacturing Carbon-Carbon materials as ablation resistant materials are shown in this paper too.
The processes of C/C composites as ablation resistant materials can provide references for weaponry materials in the further development.
Chawla, Composite Materials Science and Engineering, 2nd edition, Springer-Verlag, NY, 1998, pp. 252-276
Don and M.A.Wright, Carbon-Carbon Matrix Materials, Carbon-Carbon Materials and Composites, 1993, pp.197
Xiong, et al, Preparation and Microstructure of C/C-SiC Composites Fabricated by Warm Compressed-in situ Reacted Process, Journal of Central South University (Science and Technology), 2011, pp. 1588-1592

Effect of Infill Density and Printing Patterns on Compressive Strength of ABS, PLA, PLA-CF Materials for FDM 3D Printing Thanh-Dung Do1,a, Manh-Cuong LE1,b, Tuan-Anh NGUYEN2,c and Thai-Hung LE1,d* 1School of Materials Science and Engineering, Hanoi University of Science and Technology (HUST), Hanoi, Vietnam 2Vietnam Standards and Quality Institute, (VSQI), Hanoi, Vietnam adung.dothanh@hust.edu.vn, bcuong.lm167090@sis.hust.edu.vn, canhnt.vsqi@gmail.com, d*hung.lethai@hust.edu.vn Keywords: 3D printing, FDM, ABS, PLA, PLA-CF, printing patterns, infill density, compressive strength.
Materials and Experimental Procedures There were three types of chosen materials supplied by Flashforge USA, Inc.
International Journal of Lightweight Materials and Manufacture Volume 3, Issue 3, September 2020, Pages 284-297
International Scientific Journal Machines.
Materials.

[6] D.LGriscom, in Defects in glasses, edited by F.L.Galeener, D.L.Griscom, and M.J.Weberf, materials research society, Pittsburgh, 1986, p.213
[7] D.L.Griscom, Reviews of Solid State Science 4, 1990, p.565
Zeng, Journal of Applied Physics, 107(2010), p.044904
Yamamoto, Journal of applied physics, 58(1985), p.1356
Hanafusa, Journal of applied physics, 60(1986), p.1797.

Meyers, Biomedical Applications of Titanium and its Alloys, Overview Biological Materials Science 60/3 (2008) 46-49
Wicker, Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies, Journal of Materials Science & Technology 28/1 ( 2012) 1-14
Rohatgi, Laser engineered net shaping process for SAE 4140 low alloy steel, Materials Science and Engineering A 528/22–23(2011) 6680-6693
Yashaswi, Trends in the domain of rapid rototyping: a review, International Journal of Mechanical Sciences 3/3 (2014) 747-762
Legutko, Additive techniques of manufacturing functional products from metal materials, IOP Conference Series: Materials Science and Engineering, 393 (2018) 1-8 [69] A.

Influence of Package on Micro-accelerometer Sensitivity Ping Li 1, a, Shi-Qiao Gao1, Lei Jin1, Hai-Peng Liu 1, Yun-Bo Shi 2 1 State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China 2 Key Laboratory of Instrumentation Science & Dynamic Measurement, North University of China, Ministry of Education, Taiyuan 030051, Shanxi, China agstwliping@126.com Keywords: package, micro-accelerometer, sensitivity, die process, package materials Abstract.
Sensitivity of sensors packaged with different amount adhesive Effect of package shell materials on the sensitivity Currently, the common package shell materials for MEMS accelerometers are ceramic shell used by Draper laboratory and metal shell(mainly stainless steel) by ENDVCO 7270A series, PCB 3991A11 series and KISTLER8742A100 series respectively.
The maximum load P on the sensor is shown as formula (6), (6) Where is the propagation velocity; refers to structure parameters of package shell(R is radius of cylindrical materials, h being its height); is the density of package shell; E refers to elastic modulus of package shell materials.
Journal of Mechanical Strength, 26, 2004, 149-153
Chinese Journal of Scientific Instrument. 2008,7(29):1345-1349