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Conventional machining methods are unable to meet the challenges postured by the demand for economic machining of ultra-hard and high strength materials.
Electro discharge machining (EDM) is a promising technique with great potential for application to machining hard materials over conventional techniques.
Arrazola: Journal of Materials Processing Technology Vol. 210 (2010), p. 197 -203
Newman: International Journal of Machine Tools and Manufacture Vol. 53 (2003), p. 1287-1300
Muthuramalingam and B Mohan: Indian Journal of Engineering & Materials Science Vol. 20 (2013), p. 484-488

The Effect of Cr Content on the Microstructure and Performance of Heat Resistant Nodular Cast Iron Hongbo Li1,a, Haitao Li1,b, Chunjie Li 2,c and Lijie Qu1,3,d 1Department of Materials Science and Engineering, Jiamusi University, Jiamusi,154007, China; 2Department of Public Computer, Jiamusi University, Jiamusi,154007, China; 3Department of Materials Science and Engineering, Harbin Institute of Technology,Harbin,150001, China a jiamusilihongbo@163.com, b haitao0204@126.com, c beauties@126.com, d lijieq2003@163.com Keywords: Nodular iron, Chromium alloying, Mechanical performance, Heat resistant Abstract.
Introduction Alloying is an effect method to increase heat resistant of many materials[1].
Experimental and Materials Pig iron and steel scrap of carbon contents 4.3 Wt% and 0.2 Wt%, ferrosilicon and ferrochromium of silicon and chromium content 75 Wt% and 70 Wt% in fixed portion were melted in intermediate frequency induction furnace (GW-0.02-60/25J).
Acknowledgement It is a project supported by the Department of Education Science and technology Project of Heilongjiang Province of China(11553111) References [1] Sirong Yu, Xianyong Zhu, Qian Gao et.al: Journal of Modern cast iron Vol. 3(2010), p.42-45, in Chinese
[4] Lixi Sun, Xiaolie Liu, Hui Pan: Journal of Metal Materials and Metallurgy Engineering Vol. 4(2008), p.11-13, in Chinese

Reina Mercedes 2, 41012 Seville, Spain acgalan@us.es, bcrivera@us.es Keywords: Composite materials, polymer concrete, chemical degradation.
Materials and methods Resins.
Kinloch, Environmental attack at metal-adhesive interfaces, Elsevier Applied Science, New York. 1987
Ohama, Hot water resistance of polyester resin concrete, Proceedings of 20th Japan Congress on Materials Resistance, Tokyo, Japan, (1977) 176-178
Construction and Building Materials 23 (2009) 3328-3331

Mechanical properties of mineral powder materials depend on the rheology of the powder materials flowing such as repose angle, friction angle, adsorbability et al[4].
Materials The mineral powder samples used in the study were exploited from Yunnan, China.
The crystal shape of mineral powder materials is seen clearly with increasing amplification multiple.
As the repose angle increases，the fluidity of mineral powder materials is decreased.
, SUN Jie-jing, SHEN Yuan-sheng: China Powder Science and Technology Vol. 4(2004), p. 24 [14] Tang Liansheng, Zhang Pengchen, Wang Yang et al: Chinese Journal of Rock Mechanics and Engineering Vol. 23(2004), p. 974

Lamb wave has important application value in material nondestructive testing.
It is a kind of ultrasonic guided wave propagating in thin plate material.
Jacobs: The Journal of the Acoustical Society of American Vol. 109 (2001), p. 1841-1847 [3] X.M.
Shi: Chinese Journal of Acoustics Vol. 28 (2003), p. 368-374 [4] H.Y.
Wan: Chinese Journal of Acoustics Vol. 26 (2001), p. 239-246 [5] S.

Cai: Journal of materials processing technology Vol. 209(2009), p.1607 [2] B.
Feng, K.Andrew: Materials Science and Engineering A Vol. 445(2007), p.170 [3] C.
Z.Hu, et al.: Journal of functional materials（In chinese）Vol. 37(2006), p. 487 [7] A.I.
Han, L.Cao:Journal of Inorganic Materials（In chinese）Vol. 20(2005) , p.1349 [10] M.
Egon: Journal of colloid and interface science Vol. 218(1999), p.545–553.

Introduction The rapid developments of frontier science continue to drive new requirements for materials’ rigidity-weight ratios, high strength-weight ratios and damage resistance to promote structure performances and reduce costs.
The biomaterials science, which refers to the structures, the properties, is aimed at researching the micro-structures, biological functions, structuring mechanisms of natural organic textures, at obtaining excellent bionic design methods and exploiting new bionic materials to benefit mankind.
Animals evolve many unique and talent natural biomaterials in recent 3.5 billion years to adapt the incredible complex environments and their obdurabilities, functional adaptations and self-healing abilities are inimitable compared with traditional materials [[] Wang Liduo, Sun Wenzhen, Liang Tongxiang, et al, Progress in bionic materials, Journal of Materials Engineering, 17, 2(1996) 325. ].
Especially, the hollow columns connect with each other in many ways, such as homodromous, orthogonal or spiral [[] Chen Bin, Peng Xianghe, Fan Jinghong, Fiber-reinforce characteristics of chafer cuticle and research on structure of branched fiber, Chinese Journal of Materials Research, 17, 6(2003) 630-636. ].
On the other hand, the mechanical performances of body materials affect the muscles performances inevitably.

This paper describes the materials and the methods used to make a tensile test of composite materail.
The tensile specimens were cut in three angles 0º, 90º and 45º because it’s orthotropic materials.
This standard is usually employed for the determination of tensile properties of reinforced materials.
Daniel, (Effects of material and geometric onlinearities on the tensile and compressive behavior of composite materials with Fiber waviness), Composites Science and Technology, Vol. 61, pp. 125-134, (2001) [6] F.
Bahrami, (An experimental study on the behavior of glass–epoxy composite at low strain rates), Journal of Materials Processing Technology, Vol. 162–163, pp. 39–45, (2005) [7] Shi-Xun Wang, Lin-Zhi Wu, Li M, (Low-velocity impact and residual tensile strength analysis to carbon fiber composite laminates), Materials and Design, Vol. 31, pp.118–125, (2010) [8] N.K.

Effect of Copper Chloride on Phase Structure and Properties of Synthesized Materials from Flue Gas Desulfurization Gypsum Teeratada Yanwattana1,2,a, Nattakan Soykeabkaew1,2,b, Sitthi Duangphet1,2,c, Somwan Chumphongphan1,2,d, Uraiwan Intatha1,2, e and Nattaya Tawichai*,1,2,f 1School of Science, Mae Fah Luang University, 333 M1, Muang, Chiangrai, 57100, Thailand 2Center of Innovative and Materials for Sustainability (iMatS), Mae Fah Luang University, 333 M1, Muang, Chiangrai, 57100, Thailand a6331112017@lamduan.mfu.ac.th, bnattakan@mfu.ac.th, csitthi.dua@mfu.ac.th, dsomwan@mfu.ac.th, euraiwan.int@mfu.ac.th, *,fnattaya.taw@mfu.ac.th Keywords: FGD gypsum, calcium sulfate hemihydrate, high strength, waste utilization Abstract.
These results suggest potential applications of the present synthesized materials from FGD gypsum in industries such as ceramics casting and dental materials, where precise control over material properties is critical.
Material and Methods Chemicals and materials The FGD gypsum was supplied by the Mae Mao power plant in Lampang Province, Thailand.
This aspect ratio is ideal for many applications, such as ceramic molds, casting, and dental materials, because it offers better mechanical strength.
Journal of Applied Crystallography, 48(3) (2015) 827-835

This article studied the wire rope net bottom connection system by an experiment which was researching on four class and seven different kinds materials.
Then we get the experiment results by using different anchoring materials as anchoring end and studying the wire rope bottom connection system of tensile bearing capacity.
Studied the tensile properties of bearing capacity of wire rope anchoring bottom with different anchoring materials, the following conclusions were put forward
China Journal of Highway and Transport. 2009,22(3): 70-75
Journal of Fuzhou University (Natural Science Edition), 1996-9(24): 70~75.