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However, the life-time of boiler materials is determined not only by their creep strength but also by their steam and fireside-corrosion resistance.
The main advantages of CVD-FBR deposition of Al-Hf coatings are that it can be realized at temperatures below 600°C, in short times, at a low cost without affecting the microstructure of the materials.
Bakker, Journal of Materials Engineering and Performance Vol. 10, (2001) p. 81 [2] F.
Yakou, Materials Science and Engineering A Vol. 338 (2002) p 44
Palm, Journal of Alloys and Compounds Vol. 252, 192 (1997) p 192

Raw Materials In order to reduce the cost of heat-resistant concrete, the conventional raw materials were adopted in this paper to make up heat-resistant concrete which is with the highest heat-resistant temperature of 500 ℃.
And the conventional concrete raw materials are normal Portland cement, common crushed aggregates, flyash and polycarboxylate superplasticizer.
[In Chinese] [2] Ye Jianxiong, Wang Chong, Gong Xingyao, Zhang Jing, Yang Changhui: Materials Guides, Vol. 23, No. 9 (2009), p.75- 78
[3] Jianbin Xie, Tianchun He, Jing Fan, Yongping Ai: Applied Mechanics and Materials, Vols. 90-93 (2011), p. 2541-2545 [4] Jianbin Xie, Jing Fan, Tianchun He, ChunFeng Tang: Advanced Materials Research, Vols. 430- 432 (2012), p.968- 973
[5] Leyla Tanacan, Halit Yasa Ersoy, Umit Arpacioglu: Construction and Building Materials, Vol. 23, No.3 (2009), p.1240- 1248

Hydrological analysis data is needed as a reference for hydraulic analysis materials.
Research Tools And Materials.
Research The materials needed in this research are topographic data, batrimetry data, hydrometric data, flood tracking data, rainfall data, awlr water level data, river condition data, soil type data, land use pattern data.
The dissemination party may lessen the dangers associated with this material.
Science. thesis, University Sains, Malaysia, 2009

Effects of Welding Wire Composition on Microstructure and Mechanical Properties of Welded Joint in Al-Mg-Si Alloy Li WANGa, Ya-Ya ZHENGb,* and Shi-Hu HUc 1Department of Materials Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, P.R.
China; 2School of Materials Science and Engineering, Central South University, Changsha 410083, China a184391020@qq.com, byayazhengcsu@163.com, c1746705670@qq.com *Corresponding author Keywords: Welding wire, mechanical properties, welded joint, Al-Mg-Si Abstract.
Journal of Alloys and Compounds, 2009, 488(1):217-222
Metallurgical Science and Technology, 2000, 18(1):12~18
Materials Science & Engineering A (Structural Materials:, Properties, Microstructure and Processing), 2001, 316(1-2):11-17

Research on Fault Diagnosis and Application for Rolling Element Bearing Based on Fuzzy Analysis Xiaoguang yu 1, a, Jian liu 1,b 1 School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan, China, 114051 ayuxiaoguang58@163.com, bliujianpeter2015@yahoo.com.cn Keywords: Rolling Element Bearing; Fault Diagnosis; Variation Signal; Fuzzy Theory Abstract.
After a large number of material and testing data showed that the following parameters could be regarded as characteristic values of time domain diagnoses: l Effective value l Peak value l Kurtosis value l Margin value l Skew value 2.2 Frequency domain parameter extraction [3] [4] In this article, we used following characteristic quantity to describe power spectrum and its changes l Gravity frequency of power spectrum l Power spectrum variance l Mean square frequency The application of fuzzy theory in rolling bearing faults diagnoses 3.1 The theory and model of fuzzy logic faults diagnosis We try to setup fuzzy relation matrix between faults and symptoms before diagnoses.
Its definition is as following: The detailed way of defined membership is to set value to symptom parameter subjectively, which is based on fault level of bearing at every collecting point and past experience and reference material.
References [1] J Mathew and R J Alfredson．The Condition Monitoring of Rolling Element Bearing Using Vibration Analysis．ASME J．Vib Acoust stress Reliab Des，1984，106（12）：447～453 [2] Su Y T，Lin S T．On Initial Fault Detection of a Tapered Roller Bearing．Journal of Sound and Vibration，1992，155（1）：75～84 [3] J．Shiroishi，Bearing Condition Diagnostics via Vibration and Acoustic Emission Measurements．Mechanical Systems and signal Processing，1997，11（5）：639～705 [4] W J Staszewski，K Worden and G R Tomlinson．Time-Frequency analysis in gearbox fault detection using the Wigner-Ville distribution and pattern recognition．Mechanical Systems and Signal Processing，1997，11（5）：673～692

Acknowledgement This research was supported by the National Natural Science Fund of China (Item No. 51175180).The support of the project is gratefully acknowledged.
Applied Mechanics and Materials Vols. 135(2010)pp 122-127
Reid, Analysis of stress concentration around a spheroidal cavity under asymmetric dynamic loading, International Journal of Solids and Structures 48 (2011) 2255–2263.

The process is as follows: By the hypothesis of Miner fatigue damage accumulation formula [3] (2) Where: Z—stages of step stress —life cycle of stress —limit life cycle when only stress is exerted Then according to the fatigue curve of V-belt [3] (3) Where: N — limit life cycle — limit stress with life cycle N —constant related to material and structure of belt The limit life cycle corresponding to obtained on the basis of Eq.3 is put in Eq.2 to get the calculation equation of equivalent stress with constant life cycle (4) On the basis of Eq.4 the step stress accelerated life testing data with
38.889 39.237 39.447 9.6 9.6 9.6 6.8 23.47 7 38.565 38.915 39.266 39.617 39.968 9.6 9.6 8.8 8.8 7.2 24.07 12 38.502 38.848 39.194 39.540 39.887 9.6 9.6 9.6 9.6 34.8 25.34 3 38.609 38.964 39.318 39.673 9.6 9.6 9.6 7.2 23.57 8 38.563 38.914 39.246 39.615 39.966 9.6 9.6 9.6 9.6 8.0 24.20 13 38.629 38.984 39.339 39.695 40.050 9.6 9.6 9.6 9.6 36.0 25.48 4 38.545 38.894 39.244 39.593 9.6 9.6 9.6 9.6 23.68 9 38.637 38.993 39.349 39.705 40.060 9.6 9.6 9.6 9.6 9.6 24.34 14 38.540 38.889 39.237 39.586 39.935 9.6 9.6 9.6 9.6 45.6 25.72 5 38.602 38.956 39.309 39.663 9.6 9.6 9.6 9.6 23.72 10 38.499 38.845 39.191 39.537 39.833 9.6 9.6 9.6 9.6 24.0 24.91 Table 2 Reliable limit stress () and reliability factor of D-section classical V-belt R（%） 50 60 70 80 90 95 99 (MPa) 24.28 24.05 23.81 23.52 23.13 22.80 22.19 1 0.991 0.981 0.969 0.953 0.939 0.914 An Example For a D section classical V-belt drive system, the material
References [1] Y.D.Liu: Chinese Journal of Rubber Industry Vol. 41 (1994) No.2, p.103.
(In Chinese) [2] H.Z.Huang: Reliability Theory and Application of Mechanical Transmission (China Science and Technology Press, P.R.C 1995),p151.

(2.1) (2.2) Where, is the contact half-width, is the maximum contact stress,, is Material Poisson's ratio, , is elastic modulus of the material, is the contact length, ,is the Contact radius of the cylinder.
References [1] LIU Zhong-min, YU Xiao-li, SHEN Yu-ming Comparison of valve train dynamic models Journal of Zhejiang University (Engineering Science).2005 (In chinese) [2] Richard H.

Owing to the remarkable designability of filament wound process, the lay-up can be designed by its stress distribution, and then the mechanical property of materials will be fully used [1].
Nesterov: Composite Structures Vol. 93 (2011), p. 308 [3] Riks E: International Journal of Solids and Structures Vol.7 (1979), p.529 [4] Azam Tafreshi, Colin G.
Roberts: Composites Science and Technology Vol. 62, (2002), p.62

Acknowledgements The authors feel grateful to the financial support from the National Natural Science Foundation of China (NSFC) under the grant 50275022 and 51075055, and the China Scholarship Council (CSC) under the grant 20821099.
Detection and measurement of surface cracks in ferromagnetic materials using eddy current testing.
Microelectronics Journal, 2004, 35: 131-143