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Online since: June 2014
Authors: Aitzol Lamikiz, Eneko Ukar, Silvia Martinez, Iván Tabernero
Polishing of ductile cast iron with scan-head guided fiber laser Eneko Ukar1, a *, Aitzol Lamikiz1,b , Silvia Martínez1,c and Iván Tabernero1, d 1Mechanical Engineering Dpt. of University of the Basque Country UPV/EHU, Alameda Urquijo s/n 48013 Bilbao- Spain aeneko.ukar@ehu.es , baitzol.lamikiz@ehu.es , csilvia.martinez@ehu.es, divan.tabernero@ehu.es * corresponding author Keywords: Cast iron, laser polishing, stamping die, finishing operation.
The automation of finishing operations would result on direct cost and delivery time reduction which are key points.
Laser polishing process allows a reduction in the roughness by controlled melting of material.
Ukar et al. (2010) [4], Perry et al. (2009) [5], Raeymaekers and Talke (2010) [6], Shao et al. (2005) [7], Temmler et al. (2011) [8] and demonstrated that the laser polishing process can be successfully applied in the polishing of various materials such as titanium, stainless steel or steel tools but there are no references on the application of laser polishing process in cast iron.
In this area the material presents a martensitic structure with an average hardness over 50 HRC.
Online since: September 2005
Authors: Jimmy Vermeulen, Kristof Harri, Steve Vanlanduit, Patrick Guillaume
Tracking of Cracks in Airplane Components using Nonlinear Surface Wave Propagation Techniques Steve Vanlanduit1, Patrick Guillaume 1, Jimmy Vermeulen 1, Kristof Harri2 1 Department of Mechanical Engineering, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium, e-mail: steve.vanlanduit@vub.ac.be 2 Department of Mechanics, Royal Military Academy, Renaissancelaan 30, B-1000 Brussels, Belgium Keywords: ultrasonic surface waves, nonlinear, on-line fatigue crack detection Abstract.
Franklin: Materials Evaluation Vol. 59 (2001), p. 424 [8] B.
Mantell: Journal of Composite Materials Vol. 35 (2001) 1026 [9] J.
Shah: American Concrete Institute (ACI) Materials Journal Vol. 97(2) (2000), p. 127 [10] S.
Van der Linden: Key Eng.
Online since: October 2009
Authors: J. Lennart Lindström, Bengt Gunnar Svensson, L.I. Murin, Charalamos A. Londos, Vladimir P. Markevich
Londos5,e 1 Scientific-Practical Materials Research Centre of NAS of Belarus, BY-220072 Minsk, Belarus 2 Oslo University, Physics Department/Centre for Materials Science and Nanotechnology, N-0318 Oslo, Norway 3 Lund University, Division of Solid State Physics, SE-22100 Lund, Sweden 4 University of Manchester, School of Electrical and Electronic Engineering, Manchester M60 1QD, UK 5 Physics Department, Athens University, 15784 Athens, Greece a murin@ifttp.bas-net.by, b b.g.svensson@fys.uio.no, cLennart.Lindstrom@ftf.lth.se d v.markevich@manchester.ac.uk, e hlontos@phys.uoa.gr Key Words: Silicon, vacancy-oxygen complexes, vibrational modes.
In the present work an attempt is made to obtain more solid identifications of LVMs due to V2O and V3O defects via comparative FTIR studies of the VO satellite lines in electron- and neutron irradiated Czochralski-grown (Cz) Si materials with measurements carried out at both, low and room temperatures.
Online since: February 2014
Authors: Feng Yun Ma, Wen Long Mo, Hong Xia Liu, Shi Hao Hao
The preparation of ordered mesoporous Al2O3 and its application in Ni-based catalysts for CH4/CO2 reforming Wenlong Moa, Fengyun Mab, Hongxia Liuc, Shihao Haod College of Chemical and Chemical Engineering, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, Xinjiang university, No.14, Shengli Road Urumqi, Xinjiang 830046, PR china aemail:657232193@qq.com, bemail:ma_fy@126.com, cemail:13579943954@163.com demail:780616590@qq.com Keywords: ordered mesoporous; alumina; template method; nickel-based catalyst; methane reforming; carbon dioxide Abstract.
The CH4/CO2 reforming to produce syngas can provide materials for F-T synthesis and Oxo synthesis [1-5], which is an efficient route for decreasing the large amount of CO2.
Xing [15] prepared a series of mesoporous carbon materials which could improve the efficiency of diffusion of the electrolyte in its interior.
Materials Review, 2007, 21(5): 49-53.0
Online since: April 2018
Authors: Jian Hua Nie, Yong He Liang, Yu Cheng Yin, Man Fei Cai, Sen Cai Shen, C.Z. Wu
Characterization of Hydrolysis Process of a Silane Coupling Agent KH-570 Chengzhu Wu1, Yonghe Liang, Yucheng Yin*, Manfei Cai, Jianhua Nie and Sencai Shen The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, P.R.
Experimental Raw materials.
Wu, Chemical Industry and Engineering. (3) (2008) 203-207+232
Lu, et al, Silicone materials. 25 (2011) 153-156
Chang, et al, Materials Review 38 (2016) 59-63.
Online since: September 2016
Authors: Jian Min Du, Guo Li, Xiao Suo Wu, Kun Yang
Resistance of Concrete to Na2SO4 Freeze-Thaw Cycles and Failure Mechanism Analysis Guo LI a *, Jianmin DU b, Xiaosuo Wu c , Kun Yang d School of Mechanical and Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China aguoli@cumt.edu.cn, bDjm1975@cumt.edu.cn, c851653008@qq.com, d1024653129@qq.com Keywords: concrete; Na2SO4; resistance; freeze–thaw cycle; failure mechanism Abstract.
Experimental Raw materials and mix proportions.
Acknowledgements This research was supported by the Fund for Key Problems and Protective Measures on Durability Degradation of Concrete Bridges in Xinjiang Region, the Transport Department of Xinjiang Uygur Autonomous Region (No. 2014-11), and the Special Fund Project for Transformation of Scientific and Technological Achievements in Jiangsu Province (BA2015133).
Zhang, Frost resistance of concrete under action of MgSO4 attack, Journal of Building Materials. 5(2011)698-702.
Sun, Effect of sodium sulphate solution on the frost resistance of concrete, Journal of Building Materials. 4(2001)311-316.
Online since: October 2008
Authors: Efstathios I. Meletis, Jiechao Jiang, Z. Yuan, Jian Liu, Chong Lin Chen, J. He
Chen2,3,f 1 Department of Material Science and Engineering, University of Texas at Arlington, Arlington, TX 76019, USA 2 Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249, USA 3 The Texas Center for Superconductivity, University of Houston, Texas, 77204, USA a jiang@uta.edu (corresponding author), bjiehe@uta.edu, cmeletis@uta.edu, d jianliu.1@gmail.com, e tresses@gmail.com, fcl.chen@utsa.edu received 26 May 2008, revised 21 September 2008 and accepted 24 September 2008 Keywords: transmission electron microscopy, epitaxial oxide thin films, Interfacial structures.
Introduction Perovskite oxide thin films possess various novel properties and are considered as one of the most important material families to meet challenges of nanotechnology.
Therefore, interfacial structure and the lattice mismatch at the interface between the film and substrate play a key role in controlling epitaxial quality, microstructure and physical properties of the films.
The lattice misfit can be used to enhance the Curie temperature of high temperature superconductor [7], to alter the Curie temperature of ferromagnetic transition in CMR materials [8], magnetic properties of ferrite films [9,10,11,12], and the dielectric properties in ferroelectric materials [13].
Online since: January 2005
Authors: Y. Waku, Atsuyuki Mitani, T. Ueda, Yuushi Sakai, K. Sato, Kohei Morishita, M. Hojo, Masashi Tanaka, Shojiro Ochiai, Hiroshi Okuda, Shinichi Sakata, T. Takahashi, Narihito Nakagawa
Takahashi5,m 1 International Innovation Center, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan 2 Graduate Students, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan 3 Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan 4 Ube Research Laboratory, Corporate Research & Development, Ube Industries Ltd., Ube, Yamaguchi 755-8633, Japan 5 Ube Scientific Analysis Laboratory, Inc., Ube, Yamaguchi 755- 8633, Japan a ochiai@iic.kyoto-u.ac.jp, byuushi-sakai@t02mgc.mbox.media.kyoto-u.ac.jp, c t30y0861@ip.media.kyoto-u.ac.jp, d ueda22@mech.kyoto-u.ac.jp, e morishita@hightc.mtl.kyoto-u.ac.jp, fokuda@iic.kyoto-u.ac.jp, g mototsugu@mech.kyoto-u.ac.jp, h hojo_cm@mech.kyoto-u.ac.jp, i25222u@ube-ind.co.jp, j26359u@ube-ind.co.jp, k26676u@ube-ind.co.jp, l25222u@ube-ind.co.jp, m28411u@ube-ind.co.jp Keywords: Al2O3/YAG composite, ultra high temperature, tensile behavior, bending behavior Abstract.
Acknowledgments The authors wish to express their gratitude to Japan Ultra High Temperature Materials Research Center, Gifu and Yamaguchi for the experimental support.
Kohtoku: Processing and Fabrication of Advanced Materials IV, eds.
Moore, The Minerals, Metals and Materials Society, Warrendale, PA, (1996), p.323
Waku: Key Engng Mater.
Online since: August 2004
Authors: Ik Keun Park, Hyun Mook Kim, Suk Chull Kang, Un Su Park, Jin Ho Lee, Youn Won Park
Therefore, retention of its reliability is a key technique for the life-time maintenance of nuclear power plant.
Furthermore, the reliability of ultrasonic ISI is influenced by the inspection environment, material characteristics and types of defect.
As for the specimen, pipe-to-pipe specimen identical to the weld specimen used in nuclear power plant was developed on two piping specimen with different dimensions and materials, one of which was processed with different sizes and shapes of EDM notch on two welding parts and the other with fatigue crack and EDM notch.
Specimen materials were 304L stainless steel SA312 and TP347 stainless steel.
Shinozuka: Reliability and Durability of Marine Structures, Journal of Structural Engineering ASCE 113-6 (1987), p. 1297.
Online since: March 2007
Authors: Liang Zuo, S.C. Zhou, Y.H. Sha, Wei Pei
Zuo a Key Laboratory for Anisotropy Design and Texture Engineering of Materials (MOE), Northeastern University, Shenyang 110004, China a email: lzuo@mail.neu.edu.cn Keywords: texture, silicon steel, asymmetric rolling, magnetic annealing.
In recent years, both asymmetric rolling (ASR) and magnetic annealing have attracted much attention due to their potentials towards texture and microstructure control in metallic materials.
Experimental The starting materials were 2.4 mm thick hot bands of non-oriented silicon steel with chemical composition (wt. %) of 0.002% C, 2.10% Si, 0.90% Al, 0.35% Mn, 0.018% P, 0.0025% S, 0.0012% N, and bal.
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