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This paper present Acoustic Emission (AE) generated during fatigue mechanism of API5LX70 steel which was widely use as gas pipeline materials.
Acoustic Emission (AE) technique is suitable candidate for this purpose because it is capable to detect macro and micro phenomena in materials including fatigue crack mechanism [2].
Subra Rao, Practical Acoustic Emission, first ed., Alpha Science International Ltd., United Kingdom, 2007
Connors, Acoustic Emission during Fatigue Crack Growth in Steel, Material Science and Engineering. 28 (1977) 263-273
Gradov, Fracture Energy Analysis via Acoustic Emission, International Journal of Fatigue. 8:2 (1986) 67-71

ICMMT 2011 is sponsored by International Association of Computer Science and Information Technology (IACSIT).
The main conference themes and tracks are Material and Manufacturing Technology.
Both inward research; core areas of Material and Manufacturing Technology and outward research; multi-disciplinary, inter-disciplinary, and applications will be covered during these events.
Thanks also go to Advanced Materials Research Journal, for its wonderful editorial service to this proceeding.
Kang Zhusheng, University of Electronics Science and Technology of China, China Contact Co-Chairs Dr.

Introduction Thermoelectric (TE) materials are functional materials that can directly convert electricity and heat.
DiSalvo, Science 285 (1999) 703–706
J.Magnetism and Magnetic Materials, 310(2007)1715-1717
Chen Solid State Sciences 10 (2008) 1422-1428
Journal of Alloys and Compounds 282 (1999) 79–83

Asachi” Technical University of Iasi-Romania, Faculty of Material Science and Engineering 3University “Apollonia”, Faculty of Dental Medicine 4University Politehnica of Bucharest, Faculty of Materials Science and Engineering acornelmun@gmail.com (corresponding author) Keywords: wear test, SEM, heat treatment, rutile.
One of the important reasons for choosing these materials is their ability to develop a naturally formed passive oxide layer, which is comprised of either amorphous or poorly crystallized non-stoichiometric TiO2 [5].
Wear modes [4] Materials and methods Cp-Ti II grade samples were grounded on SiC metallographic paper with different dimensions (from 180 to 1200).
Ramkumar, M.Satyam, “Growth of titanium oxide overlayers by thermal oxidation of titanium”, 1988, Journal of Materials Science 23 (1988) 1591 – 1597 [8] B.
Alsaran, “Influence of Surface Roughness on Corrosion and Tribological Behavior of CP-Ti After Thermal Oxidation Treatment”, Journal of Materials Engineering and Performance, 2010, Volume 19, Issue 3, pp 428-433.

The theory using the unified mechanical model, concise mathematical expressions, flexible and applicable to various features of material, its mathematical expression is: 　 　when (1a) when (1b) ,, as the material of the principal stress; as the material of tension and compression ratio; as the shear yield limit; as the compression of material yield limit; as the tensile yield limit of materials; Ductile metal materials Generally is 0.77 ~ 1.0, brittle metal material is 0.33 ~ 0.77, geotechnical materials Generally is less than 0.5, concrete is generally 0.065 ~ 0.100. b(0 ≤ b ≤1) is reflecting intermediate principal shear stress and normal stress on the material damage on the surface of the impact of material strength parameters.
Most metal materials have obvious yield point, and the tensile strength and compressive strength are equal.
England: Elsevier Science LTD, 2005: 701- 706 in Chinese [5] ZHAO Junhai.
Beijing :Science Press，2003.87~91. in Chinese [6] Wei Gu, Yinghua Zhao, Dongwei Shang.
China Civil Engineering Journal, 2005, 38( 10) : 44- 48 in Chinese

Preface Current issue of journal Solid State Phenomena contains the papers contributed to the 26th International Baltic Conference Materials Engineering 2017 was held on October 26-27, 2017 in Kaunas, Lithuania.
International Baltic Conference of Engineering Materials and Tribology was initiated 27 years ago and the first conference took place in 1991 as "The first International Baltic Conference on Powder Metallurgy".
Since then, conference continues the tradition of the regular meetings held annually in one of the three Baltic States, with specific topics in each country: • Surface Engineering and Tribology in Estonia, • Biomaterials Engineering in Latvia, • Engineering Materials in Lithuania.
The Materials Engineering 2017 topics are: • Engineering materials and applications; • Advanced technologies in materials science; • Surface engineering and tribology.
The conference Materials Engineering 2017 continues the tradition of the previous regular meeting by attracting many of the best known leading scientists and specialists from almost all of the different fields of expertise covering materials engineering and tribology issues.

Thus, full compaction and materials uniformly-distributed in batches was preferred.
Journal of Wuhan University of Technology, 2003, 25(4):17-20
Advanced Cement-based Materials, 1995, 28(2):30-38
Science and Technology Review, 2008, 26(10):61-64
Journal of Hydraulic Engineering, 2006, 37(9):1044-1050

Hazardous materials (hazmat, hereafter) are products that present a risk to the health, safety and property during transportation.
Hazmat includes explosives, various types of gases, solids, liquids, flammables, combustibles, radioactive materials, among others.
Besides to the inherent risks emerging from the transportation of hazardous materials and wastes, it has also paid attention that the hazmat can potentially affect health and the environment, in addition to property damage.
Verter; Designing a road network for hazardous materials transportation, Transportation Sci, Vol. 44 (2004), p. 1595-1607
Verter; Toll policies for mitigating hazardous materials transport risk, Transportation Science, INFORMS, Vol. 43 (2009), p. 228-243

Experimental Materials Fresh natural latex was produced by Mengpeng State Farm in Yunnan Province P.
Viscosity stabilizers were of chemical grade, other materials were of industrial grade.
At ambient temperature τ1 and τ2, equation (1) can be written as follow (2) According to equation (2) the aging life τ2 of polymer materials at temperature τ2 can be calculated out if the aging life τ1 of polymer materials at temperature τ1 and activation energy of oxidation E are obtained.
Acknowledgements This work was supported by National Natural Science Foundation of China (No.50963006), National Science Foundation of Hainan Province(No.808199), is gratefully acknowledged.
References [1] B.C.Sekhar: Journal of polymer science, 1960, 48(150): 133-137

The friction coefficient is dependent on metal powder constitutive material [12] and of specific mixture powder materials – lubricant.
Hashemi, Finite Element Analysis of Friction-Assisted Powder Compaction Process., (2012) SAE International Journal of Materials and Manufacturing, 5 (2), pp. 333-344.3
Frunza, Friction-assisted pressing of PM components, Conference: International Conference on Advanced Materials Processing Technologies, Madrid, Spain Sep 18-21, 2001 Journal of Materials Processing Technology (2003) Volume: 143 Special Issue: SI Pages: 645-650
Wikman, A Friction Model for Iron Powder Pressing Based on a Tribological Approach, Advances in Powder Metallurgy and Particulate Materials, 7, (1996), 329-340
-W Yu, Research of Favorable Conversion of Friction during Powder Compaction, Material Science Forum, 575-578(1), (2008), 443-448