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VHCF strength of helical compression springs - Influence of heat treatment temperature before shot peening Isabell Brunner1, a *, Desislava Veleva1, b, Jörg Beyer1, c, Matthias Oechsner1, d 1State Materials Testing Institute Darmstadt, Chair and Institute for Materials Science, Technische Universität Darmstadt, 64283 Darmstadt, Germany abrunner@mpa-ifw.tu-darmstadt.de, bveleva@mpa-ifw.tu-darmstadt.de, cbeyer@mpa-ifw.tu-darmstadt.de, doechsner@mpa-ifw.tu-darmstadt.de, *corresponding author Keywords: Helical compression springs, SiCr-alloyed valve spring steel, very high cycle fatigue test, heat treatment temperature Abstract.
To analyse the influence of different materials and production parameters on the VHCF fatigue strength of helical compression springs, a project was initiated at the Institute for Materials Technology at the Technische Universität Darmstadt [2].
By adjusting production parameters, the reliability of helical compression springs can be improved for a very high number of cycles even for cost-efficient spring wire materials.
Vol. 4, Elsevier Science Pub.
Sonsino, Course of SN curves especially in the high-cycle fatigue regime with regard to component design and safety, International Journal of Fatigue 29, 2007

Introduction The Supply chain is a network of suppliers, factories, warehouse, distribution canters and retailers through which materials are required, transformed and delivered to customers.
M., 2002, On the complementary value of accurate demand information and production and supplier flexibility, Manufacturing and Service Operations Management 4(2), 99-113 [2] Raghunathan, S., 2003, Impact of demand correlation on the value of and incentives for information sharing in a supply chain, European Journal of Operational Research 146, 634-649 [3] Lin, F., Huang, S. and Lin, S., 2002, Effects of information sharing on supply chain performance in electronic commerce, IEEE Transactions on Engineering Management 49(3), 258-268 [4] Cachon, G. and Fisher, M., 2000, Supply chain inventory management and the value of shared information, Management Science 46(8), 1032-1048 [5] Yu, Z., Yan, H. and Cheng, T.C.E., 2001, Benefits of information sharing with supply chain partnerships, Industrial Management & Data Systems 101(3), 114-11 [6] Michael Grean, Michael J.

Journal of Iron and Steel Research, 2009,21(1): 10-13
Materials Science and Technology, 2007,15(5): 738-740.

Acknowledgements This research is supported by National Natural Science Foundation of China (No. 51135009), Hunan Provincial Innovation Foundation for Postgraduate (No.CX2011B014) and Innovation Foundation for Postgraduate of National University of Defense Technology (No.B110303).
[3] Y.F Lu, D.P Fan, D.J Sheng, et al: Advanced Materials Research Vol. 305 (2011), pp. 37-41
[8] Zui H, Shinke T and Namita Y.H : Journal of Structural Engineering, Vol. 122(1996), pp. 651-656

The stress wave attenuation depends on the width of crack and the impedance of bonding materials.
Cai, J Zhao: International Journal of Rock Mechanics and Mining Sciences, Vol.37 (2000) No.4, p.661

[2] GAO Fei, LI Jianling, ZHAO Shuhong and WANG Zidong: submitted to Electronic Components & Materials (2009)
[3] Zhan Shi, Yuhong Li, Li Han and Jian Ma: submitted to Lecture Notes in Computer Science (2009)
[4] Information on http://www.nasa.gov/ [5] Ming Ye, Huiwen Wang, Wei Kou: submitted to Journal of Systems & Management (2010)

Acknowledgements The authors wish to express their appreciation to the National Natural Science Foundation of China (No. 51378436) and Fundamental Research Funds for the Central Universities (SWJTU11ZT33) for its financial support.
Advanced Materials Research2013,Vols: 671-674,pp1122-1125
Chinese Journal of Underground Space and Engineering.Vol.9,No.4 pp0884-0895,2013 [3] Zhou Xiaojun, Zhou Jiamei.Urban Metro and Light Rail Transit(in Chinese).

Simulation and Optimization of Flow Field in the Mold of Slab continuous casting Yuexin Wang 1, a, Zhifang Zhang 2,b, Yuting Guo3, a 1Dept. of Physics and Mechanical Electronic Engineering, Longyan Institute, Longyan - 364012 – China 2Research Institute of Highway Ministry of Transport, Beijing 100088 – China 3Dept. of Life Sciences, Longyan Institute, Longyan - 364012 – China awyx11111@163.com bzf.zhang@rioh.cn cxhs2796127@163.com Keyword: mold; submerged nozzle; simulating; optimization Abstract: For a period of time, because of a steel factory’s frequent breakout , through monitoring the breakout slab cover, One of the important reasons for breakout is unreasonable flow field distribution in the mold.
Journal of System Simulation , 2003 , 15 (4) :472-475
Metallurgical and Materials Transactions B,1996,27B(8):757

Filling of retaining wall used 3-D solid 8-node unit and Mohr-Coulomb material failure criterion.
The axial force of middle reinforcement strip layer(5 layer,6 layer,7 layer,8 layer,9 layer,10 layer,11 layer) increased significantly.It is pointed that the maximum tension increases by 1.45 kN.Among them, the axial force of difference reinforcement strip compared with before and after earthquake, respectively increased by 4.8%,7.3%,8.7%,9.2%,11.1%,12.1%,13.1%,14%,15%,16.2%,15.8%,10.0%.This main caused by filling material soil body stress metastasis of soil body stress after earthquake.
Acknowledge This research is supported by National Natural Science Foundation Project(grant number: 509781295) and Alumni Foundation of Civil Engineering 77, Lanzhou University of Technology(TM-TJ-1001).
Journal of Performance of Constructed Facilities, ASCE, 2006, 20(3):287-299 [5]H.Nour,A.

An EIA-based test [4] and the microbiological methods are recommended for the detection of staphylococcal enterotoxin A in food raw materials and animal food products, as well as the biological method is recommended for okadaic acid detection in marine products, deep-sea scallops, and mollusks [5].
Journal of Pharmaceutical Sciences.