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Effect of Crack Statically Growing on Stress and Strain at Crack Tip for Power Hardening Materials He Xue 1, a, Min Qiao 1,b , ZhenWen Wang 1,c , XiaoYan Gong 1,d 1 School of Mechanical Engineering, Xi’an University of Science and Technology, 710054, China axue_he@hotmail.com, bqiaom_1989@163.com, c2007.wzw@163.com , dgongxymail@163.com Keywords: crack statically growing; residual plastic strain; power hardening materials; elastic-plastic finite element Abstract.
Numerous austenitic stainless steels and nickel-based alloys are power hardening materials, which is widely used in key structural materials of nuclear power plants.
Therefore, the re-distribution of stress and strain at the growing crack tip in power hardening materials will be discussed by using ABAQUS software in this paper, which provides a foundation for quantitative predicting environmentally assisted cracking growth rate in key structural materials of nuclear power plants.
The numerical simulating test process satisfied American Society for Testing and Materials (ASTM) E399 standards.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China(11072191) References [1] HAN E H, WANG J Q, WU X Q: Acta Metallurgica Sinica Vol.46 (2010),p.1379 [2] CHOPRA O K, CHUNGA H M, KASSNER T F: Nuclear Engineering and Design Vol. 194 (1999),p.205 [3] GUAN Y X, Dong C F, LI Y: Science and Technology Review Vol. 29(2011),p.17 [4] PENG Q J, KWON J, SHOJI T: Journal of Nuclear Materials Vol. 324 (2004),p.52 [5] HALL JR M M: Corrosion Science Vol. 50(2008),p.2902 [6] SHOJI T, LU Z P, MURAKAMI H :Corrosion Science Vol. 52(2010),p.769 [7] XUE H, SHOJI T: Transactions of the ASME-Journal of Pressure Vessel and Technology Vol. 129(2007),p.254 [8] XUE H, ZHAO D, PENG Q J: Journal of materials Vol. 5(2011),p.18 [9] XUE H, LI Z J, LU Z P: Nuclear Engineering and Design Vol. 241(2011),p.73 [10] XUE H, OGAWA K, SHOJI T: Nuclear Engineering and Design Vol. 236(2009),p.628

Mixed-Mode Crack Propagation in Functionally Graded Materials Jeong-Ho Kim 1,a and Glaucio H.
These materials have been introduced to take advantage of ideal behavior of material constituents.
Tina Panontin), and the National Science Foundation (NSF) under grant CMS0115954 (Mechanics and Materials Program).
Shemilt: Journal of Materials Science Vol. 36 (2001), p. 1077
Kim: Mixed-mode crack propagation in functionally graded materials, Ph.D.

Introduction Granular materials are encountered widely in nature and engineering.
The parameter can express the stability of granular materials at particle scale.
Critical state and evolution of coordination numberin simulated granular materials.
Journal of Tongji University (Natural Science), 2007, 35, 1299-1304
Microscopic theoretical model of critical state for granular materials.

Topology optimization of viscoelastic materials distribution of damped sandwich plate composite Zhanxin Liu 1, a, Hong Guan 2, b,Weiguang Zhen3, c 1,2Yichang Testing Technique Research Institute, Yichang, Hubei 443003 China 3Department of Mechanical Engineering, Huazhong University of Science & Technology, No. 1037 Luoyu Road, Wuhan,Hubei 430074 China.
For the optimum materials distribution of the first modal as shown is Fig. 1, the materials are largely along the four edges, and no materials is set in the center of the plate.
Journal of Sound and Vibration, 279 (2005), pp. 739-756
Journal of Sound and Vibration, 310 (2008), pp. 739-756
AIAA Journal, 20 (1981), pp. 1284-1290

It is thus of some interest to understand the dynamic behavior of masonry materials under dynamic loading.
Based on the constitutive relations of the brick and the mortar materials, the equivalent stress-strain relations of the RVE are homogenized by applying various compatible displacement conditions on the RVE surfaces.
They are defined as and (3) in which and are damage parameters that control postfailure stress-strain relations of materials in tension and compression.
Niu: International Journal of Solids and Structures, Vol. 29(5) (1992), p.531-546
Gusella: International Journal of Solids and Structures, Vol. 41 (2004), p.1911-1923

Metallographic examination is one of the essential means of materials science research.
It also shows that automation and computerization in the field of material is not only feasible, but also essential for materials science research.
Zhang: Journal of Materials Processing Technology，Vol. 11 (2001) No.7, p.84
Zhou: Journal of Materials Science & Technology, Vol. 17 (2001) No.3, p.306
Yang and Z.L.Hu: Materials Review, Vol. 14 (2000) No.7, p.3.

The Application of Carbon Fiber Materials in Sports Equipment Yanyan Chen Sport Department, Xibei University, Xian, Shaannxi, China hongxin8me@163.com Keywords: Carbon Fiber Materials, Sports Equipment, Application Abstract: Carbon fiber materials are not only widely used in aerospace, automotive and other industries, but also develop one of the best sports equipment selection.
Carbon fiber materials have become one of the new materials which are essential for the development of modern sports equipment.
Currently, sports equipment used to manufacture new materials are mainly composites, and carbon fiber composite material is one of the best.
[3] Yu Shujuan, Gao Lijun and Ma Tailai: Journal of Hengyang Normal University, Vo1. 2 (2011) No. 6, p. 16-25
[4] Sun Kaiying: Journal of Inner Mongolia Science and Technology, Vo1. 1 (2010) No. 6, p. 52-60

Materials and methods Materials The sample for analysis were commercial dehydrated carrots cube (1 mm diameter and 0.5 mm thickness, 7 ～ 9 % moisture content), they were purchased from Shandong province in China.
Klaus: International Journal of Food Science and Technology, Vol. 44 (2007), p. 1245 [5] S.N.
Resnik and G.Wetzler: Journal of Food Science, Vol. 52 (1987), p. 1063 [9] K.
Chang: Journal of Food Science, Vol. 60 (1995), p. 324 [11] P.S.
Warthesen: Journal of Food Science, Vol. 60 (1995), p. 1048

Material properties and bonding behaviours of the die materials.
Progress in Materials Science, 2011. 56(4): p. 379-473
Materials Science and Engineering: R: Reports, 2004. 44(2): p. 45-89
International journal of dentistry, 2012. 2012
Journal of materials engineering and performance, 2000. 9(1): p. 51-55

In the years passed since the first conference held in 1999 [1] the subject has expanded from isolated pioneering publications to one of the most actively developing trends in materials science and related disciplines such as materials processing technology, solid state physics and chemistry.
Recently the scope of NanoSPD was broadened to include further engineering and medical branches, thus increasing the number of publications in this field to several hundred per year and boasting top-cited papers in leading materials science journals [2].
As a resume of the scientific outcome of the conference, it was stated that bulk nanostructured materials produced by SPD have become an extensively pursued area of research in materials science.
In particular, the International Symposium on Ultrafine-Grained Materials moved its sessions on all aspects of science and technology of bulk ultrafine-grained materials produced by SPD techniques and other techniques.
Lowe (eds.): Ultrafine Grained Materials II (The Minerals, Metals and Materials Society, Warrendale, PA 2002)