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The Reliability of Micro-spring Under Dynamic Circumstances Lou Wenzhong1, a, Liu Peng1, b, Li Kang2, c, Ding Xuran1, a 1State Key Laboratory of Mechatronics Engineering and Control, Beijing Institute of Technology, Beijing, China, 100081 2School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China, 210094 alouwz@bit.edu.cn (corresponding author), bLeopardliupeng@126.com, coscarlikang@gmail.com, Keywords: Micro-spring; reliability; Griffith theory of brittle fracture; dynamical circumstances Abstract: This article mainly focuses on the reliability of micro-spring, which as a typical component of MEMS device, applies electrodeposited nickel material and is fabricated by LIGA process, being used under the circumstances like transporting and restoring which may induce shock and crash.
Griffith theory of brittle fracture In 1921 Griffith studied strength of the glass when crack appeared and grew, then he put forward the energy release rate theory that materials break in low-stress situation is caused by the instability of micro-crack extension [4].
Micro-spring mechanical characteristic experiment under dynamical circumstances MEMS material mechanical properties are important parameters in determining the performance of these micro-components; some research institutes launched a large number of tests in MEMS design process.
Material properties of the electrodeposited nickel fabricated by LIGA process are shown in Table 1.
Emulating MEMS S&A by Finite Element Method [J], JOURNAL OF DETECTION & CONTROL, 28(2006), pp. 14~16

Defects Diagnosis Technology of Water Supply Pipe’s Network Using Pipe Endoscope Camera of High Resolution/High Pressure Resistance Performance Hyun Dong Lee1, a, Pill Jae Kwak1, b, JooYeon Lee1,c, ChulHanPark3,d, Jayong Ko4,e, Myounghun Cho3,f 1 Korea Institute of Construction Technology 2311 Daehwa-Dong, ilsanseo-Gu, Goyang-Si, Gyenggi-Do, KOREA 2University of Science & Technology, 176 Gajeong-ro,Yuseong-gu, Dajeon, Korea 3Seoyong Engineering CO., LTD., 1713 U-Tower, 1029 Youngduk-Dong, Kiheung-Gu, Yongin-SiGyenggi-Do, KOREA 4University of Seoul 163 Siripdaero, Dongdaemun-gu, Seoul, KOREA ahdlee@kict.re.kr, bpjkwak@kict.re.kr,cjylee79@kict.re.kr, dchpark@seoyong.co.kr,ejykoo@uos.ac.kr,fbeenpooh1231@naver.com Keywords:Pipe diagnosis, Camera of High Resolution/High Pressure Resistance Performance, inspection hole Abstract: The size of pipe network accident caused by aging of water distribution system, rapid urbanization, abnormal climate or a disaster such as an earthquake
A side viewing type camera has waterproof function; is cheaper than a stainless steel product but has a higher hardness than that of Teflon product; is developed using POM (Polyoxymethylene) with good processibility; and is designed to facilitate replacement of various types of guides with brush roller function and so on. 2.3 Improve endoscopic camera The lens of the pipe endoscope camera was improved and compared so that image shooting inside a pipe may be less affected by foreign materials or water pressure. 3.
The side-view camera is effective for water piping with above a certain size because of its visual field watching every wall of pipes. 3.3 The comparison of inside pipe image:High Resolution VS Low Resolution camera The images of corrosion products, coating damage, and coating material floating state before and after improvement of the existing pipe endoscope camera functions were compared respectively.
Sridhar, “Modeling pipeline crevice corrosion under a disbonded coating with or without cathodic protection under transient and steady state conditions”, Corrosion Science, 50,70–83, 2008
[2] EPA, Control of mitigation of drinking water losses in distribution systems, 2010 [3] Kumar, “Parameter Estimation in Water Distribution Networks”, Water resources management, 2010 [4] Puust, R.; Kapelan, “ A review of methods for leakage management in pipe networks”, URBAN WATER JOURNAL , 2010

., Wenkang Li1,c, Aiai Huang1,d, Zhicheng Xu2,e 1College of life information science & instrument engineering, Hangzhou dianzi university, Hangzhou, China 2Shanghai ninth people’s hospital affiliated Shanghai jiaotong university school of medicine, Shanghai, China ataomeng1000@gmail.com, blihong@hdu.edu.cn, c419958857@qq.com, dhuangaiai@hdu.edu.cn, exu7711007@sina.com Keywords: Cornea; Tissue engineering; Transparence; LabVIEW Abstract.
And these series transparence detectors are mainly used for measuring all kinds of glass, plastic, film, and transparent or translucent material with the light source, light flux sensor, the hardware circuit structures and liquid crystal display.
Materials and methods Measurement principle of transparence for tissue engineered cornea According to the definition of the optical transparence, a beam of parallel light propagates some distance in corneal medium, then the ratio[3] of light energy in front and behind of corneal medium is measured, so the corneal transparence can be calculated.
Chinese Journal of Clinical Rehabilitation, (2003),7(3): 234-235
Harbin University Of Science And Technology, (2004)

We assigned the water material to the plane to represent water effect.
The water material includes water texture, reflection and refraction map for mapping environment, and the bump map to analog the ripple of lake surface.
By adjusting the water material carefully, we achieved the realistic effects of water (showed in Fig.4)[6].
China Science Ana Technology Information.10(12):94-95(2008) (In Chinese)
Journal of Anhui Agri.

Clarification of High-salinity Mine Water with Plants Bo Gao 1, a, Qi-yan Feng 1, b and Xiang-dong Li 1, c 1School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116 China acumt_gb@163.com, bfqycumt@126.com, cxdli123@126.com Keywords: High-salinity mine water; Plant species; Salinity Abstract: High-salinity mine water has been often treating with electrodialysis, multi-effect.
Material and Methods Materials.
Acknowledgements This work is financially supported by National Science and Technology Major Project (No. 2011ZX05060-005) and the Environment Commonweal Project (No. 201109011).
Silva: Journal of Environmental Management, Vol. 95(2012), p. 66-71 [6] M.V.G.

Introduction As we all known, without air resistance, when inclined throw a material with certain speed, only if the release angle is 45, it can reach furthest.
Bulletin of Sport Science & Technology, (2011)
Journal of Beijing Sport University, (2011)
Lower extremity muscle activities during cycling are influenced by load and frequency .Journal of Electromyography and Kinesiology, (2003) :181-19
A physiologically based criterion of muscle force prediction in locomotion .Journal of Biomechanics, (1981), 14 (11) :793-801

Countermeasure Towards the preventing and fathering measures, many investigations generally commit to policy and administration yet ignore the material guidance.
References [1] YY Chen: Journal of GuangDong Institute of Public Administration, in Chinese.Vol. 2 (2007), p. 46
[3] MLHu,JH Xiao: Journal of Quest, in Chinese.Vol. 12 (2008), p. 63
[4] WX Zhao, SX Chen: Journal of Safety and Environmental Engineering, in Chinese.Vol. 16 (2009), p. 14
[5] J Jin, Y Lai: Journal of Word Environment, in Chinese.Vol. 4 (2008), p. 84.

(1) Fully wet fin ∂2θ∂X2+p2∂2θ∂Y2-Bixsθ-Bixεsωa-ωTa-Tb=0 (2) Partially wet fin For dry region(θ(X,Y)<θdew) ∂2θ∂X2+p2∂2θ∂Y2-Bixsθ=0 (3) For wet region(θ(X,Y)≥θdew) ∂2θ∂X2+p2∂2θ∂Y2-Bixsθ-Bixεsωa-ωTa-Tb=0 (4) With boundary conditions For θ(X,Y)<θdew θX=0=1, -∂θ∂XX=1=Bix∙θX=1, ∂θ∂YY=0=Bixp∙θY=0, -∂θ∂YY=1=Bixp∙θY=1 For θ(X,Y)≥θdew θX=0=1, -∂θ∂XX=1=Bix∙θX=1+Bix∙ε∙ωa-ωX=1Ta-Tb, ∂θ∂YY=0=Bixp∙θY=0+Bix∙εp∙ωa-ωY=0Ta-Tb, -∂θ∂YY=1=Bixp∙θY=1+Bix∙εp∙ωa-ωY=1Ta-Tb On introducing the dimensionless parameters θ=Ta-TTa-Tb, ε=IfgcpaLe2/3 , X=xa, Y=yb, Bix=haλ, p=ab, s=δ2a , Le=(hhD∙cpa)3/2 Where D-Diffusivity of water vapor in air, m2/s; cpa-specific heat of moist air, J/kg∙K; h-heat transfer coefficient on the air side, W/m2; hD-mass transfer coefficient, kg/m2s;Ifg-latent heat of condensation of water vapor, J/kg; λ-thermal conductivity of fin material
References [1] Rosario, L. et al.: ASME Journal of Energy Resources Technology, Vol. 120 (1998) No.4, p.299
Das: Journal of Heat Transfer, Vol. 126 (2004) No. 5, p.862
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(2) The concrete material is the same in the model.
[3]H.Q.Liu,and Z.X.Li: Journal of Natural Disasters in Chanese.Vol.15(2007),p.86-90
[5]H.Q.Liu,and Z.X.Li,and H.Q.Chen: Journal of Vibration Engineering in Chanese.Vol.17(2004),p.1061-1063
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[9]H.Q.Chen, Z.X.Li,and Y.T.Li: Journal of Tianjin University in Chanese.Vol.35(2002),p.761-765

Prediction on the Wear Life of Bearings for Planetary Gears Jie Zhang 1,a, Yinghua Liao1,b, Bo Huang1,c 1 School of Mechanical Engineering, Sichuan University of Science & Engineering, Zigong Sichuan alsclgzj@vip.sina.com, bliaoyinghua118@163.com, c670708517@qq.com Key words: planetary gears; bearing clearance; wear life of bearings; bearing wear Abstract.
Journal of Computational and Nonlinear Dynamics, 2012, 7(4) [2] T.
Journal of Sound and Vibration, 2000, 238(5):723-756 [6] Yi Guo, Robert G.
European Journal of Mechanics A/Solids. 2010, (29): 1022-1033 [7] Zengmin LIU, Geng LIU, Liyan WU, et al.
Journal of Mechanical Design,2000,122(1):83-90