Search results

Fig. 1 Ring 1 Fig. 2 Ring 2 Areas of application of the eddy current method The eddy current method is a non-destructive method of materials testing.
It can be used for the verification of electrically conductive components [1] or the identification of both material discontinuities and non-metallic inclusions [2].
Tian, Investigation of the magnetic field response from eddy current inspection of defects, The International Journal of Advanced Manufacturing Technology 54 (2011), Issue 1-4 223-230 [2] P.
Yavorovych, Detection of defects in the tubes of refrigerators of locomotive diesel engines by the eddy current method, Materials Science, Volume 41, 5 (2005), Issue 3, 406-409 [8] D.
Nakagawa, Recommended NDT Practice and its Model-based Investigation for Eddy Current Inspection of Aerospace Structures, Journal of Nondestructive Evaluation Vol. 25 4 (2006) 183-194 [13] O.

A Method with a Statistical Approach for the Evaluation of Tolerance Chains Rita Ambu Department of Mechanical, Chemical and Materials Engineering, University of Cagliari Piazza d’ Armi, 09123 Cagliari (Italy) ambu@unica.it Keywords: Tolerancing, statistical, manufacturing Abstract.
In fact, when the maximum material modifier is introduced, an increase in position tolerance is allowed, equal to the departure of the feature from the maximum material condition (MMC) size.
In assigning the geometric tolerances, both holes on the base plate were chosen as multiple secondary datum (B-C) with a maximum material modifier, and a position tolerance was applied also with a maximum material modifier.
Whitney, Application of screw theory to constraint analysis of mechanical assemblies joined by features, Journal of Mechanical Design, 123 (2001) 26-32
Pariel, Three-Dimensional verification of geometric tolerances with the “Fitting Gauge” model, Journal of Computing and Information Science in Engineering, 7 (2007) 26-30

Another reason to choose EMF is to form sheet materials in a different way than conventional processes in order to improve surface quality [1].
Acknowledgement The current study is supported by National Science Council, contract 96-2411-H-152-003 and 96-2622-E-152-001-CC3.
Shinmura: Development of Effectve Magnetic Deburring Method for a Drilled Hole on the Inside of Tubing Using a Magnetic Machining Jig, Key Engineering Materials, Vol. 329 (2006), p. 243-248 [2] J.
Blum: Multifield modeling of electromagnetic metal forming processes, Journal of Materials Processing Technology, 177(1-3) (2006), p. 270-273 [3] W.M.
Pa: Ultrasonic-aided Electrochemical Finishing of female screw using completely inserted electrode" International Journal of Materials and Product Technolog. 31(2-4) (2008), p.176-185

Introduction A structure in mechanics is defined by J.E.Gordon [1] as “any assemblage of materials which is intended to sustain loads.”
Structural optimization is the subjects of making an assemblage of materials sustain loads in the best way.
Therefore, in the housing dynamic topology optimization model, not only frequency response displacement constraints are needed, but also the remaining material can’t be too less to avoid large area of holes (material removed) appear on the housing.
In Fig.3, the material of red area must be kept, the material of blue area can be removed.
Jafari and A.Davar．Analysis and optimization of laminated composite circular cylindrical shell subjected to compressive axial and transverse transient dynamic loads．Thin-Walled Structures，2009，40(8-9): 970-983 [6]Yang Yang, Research on the some integrated transmission housing topology optimization[D], Beijing Institute of Technology. 2007 (in Chinese) [7]XuJie, Cao Jianguo, Lei Gang, Lightweight design on the gear-box of heavy vehicle[J], Modern Machine, 2011(1), 49-53 (in Chinese) [8]GuoNeng, Zhou Youguo, Lei Gang, Wang Lun, Topological Optimization on the gearbox of heavy vehicle[J], Journal of Chongqing University of Technology (Natural Science), 2010, 24(12):106-109 (in Chinese)

The material of box girder is C50 and the pier is C30.
Damping coefficient of the materials is equal 0.05. 2 Material Definition The reinforced concrete model was primarily developed to simulate the deformation and failure of reinforced concrete in the structure of bridge.
And it isn’t list in this paper of the pier material.
International Journal for Numerical and Analytical Methods in Geomechanics, 1994.
Journal of Engineering Mechanics, Proceedings of ASCE. 1993. 119 (9): 1709-1723

Introduction Surface acoustic wave (SAW) device is widely used, the key technologies of low insertion loss SAW device design are in the choice of piezoelectric materials and the structure of inter-digital transducer (IDT).
As is well-known, there are lots of factors influence the performance of SAW, such as the performance of piezoelectric materials, the inter-digital structure and fabrication process etc.
Chinese Journal of Structural Chemistry,18(2005) 557-560
[4] Dai qiang Wang, Yu qing, Chen, Xi pin Xu, Qiao Liu, The improvement of SAW device interdigital transducer σ function model,J.Electronic Components and Materials, 29( 2010)62-65
[6] Dai qiang Wang, Yu qing, Chen, Xi pin Xu, Qiao Liu, SAW filter of apodizing weighted IDT triangle structure design and implementation,J.Journal of Southwest University, Natural Science Edition, 33( 2011)31-35.

Welding-titanium and titanium alloys must be performed with special precautions because these materials are very reactive to contamination from atmosphere gases.
Titanium and its alloys have found wide applications in areas such as medical sciences, aerospace and chemical industries, etc.
Annealing procedures of materials Material Annealing procedure Commercially pure titanium 650-815°C,15-120min Ti-6Al-4V 705-870°C,15-60min Ti-15V-3Cr-3Sn-3Al 760-815°C,3-30min A: Pure Commercial Titanium B:Ti-6Al-4V C: TI-15V-3CR-3SN-3AL Figure 2- Samples of different weld joints Figure 3- (1) hydrogen distribution in the weld metal for■ : without annealing for Ti-6Al-4V, (_ _ _):for TI-15V-3CR-3SN-3AL and ( _____ ): for pure commercial titanium, and (2)▲: for Ti-6Al-4V with annealing .
[10] Zamkov V N, 1984, Titanium science and technology
[14] Smith II R D, et al, Supplement to the welding journal May 2001 , The determination of hydrogen distribution in high-strength steel weldments, Part 1 and 2

Preparation of PVA Nanofiltration Membrane with Good Solvent Resistance Jiandong Zhang1, a, Li Wang2 1Department of science and technology, Ankang University, Ankang, China 2 Department of Politics and History, Ankang University, Ankang, China azjd111zjd@163.com Keywords: nanofitration membrane, PVA, composite membrane, PES Abstract.
However, most of the nanofiltration membranes are only used in the water treatment because the membrane materials are not stable in organic solvent, and the separation of organic solvent is very important in chemical industry [2].
In this work, PES ultrafiltration membrane is used as the support layer of the composite membrane and PVA is used as the functional material of the composite layer.
Experimental Materials and Instruments.
Vankelecom, Solvent resistant nanofiltration (SRNF) membranes based on metal-organic frameworks, Journal of Membrane Science 344 (2009) 190–198

With the developments of micro-electric material, the lighting efficiency of LED can be 50- 200 lumen/watt and the color of LED light is pure and has thin frequency width [1].
Considering the process latency and rejection rate, the raw materials are set to 1000.
That means every 0.48 minute, a raw material should be created.
Journal of Foshan colloge of science and technology, 2006, 24(1):110-113
Computer aided Design with CAD and SolidWorks， China science and Technology press.2005, 01,01

On the Crack Defect of CrZrCu Alloy DC Casting Ingot Di.Wu1,a, Shan.Yao1,b ,Guangxing.Tang1,c and Tong.Yang1,d 1School of Material Science and Engineering, Dalian university of technology Dalian, Liaoning province, 116024, China a wudi_160213@163.com, b yaoshan@dlut.edu.cn, c whorl@126.com and d ytami@126.com Keywords: Crack Defect, DC Casting, CrZrCu Abstract: The CrZrCu alloy cylindrical ingots have been tried to produce by the direct chill (DC) casting process.
Materials Science and Engineering (2005)
Journal of Alloys and Compounds 220 (1995) [7] G.
Metallu- rgical and materials transactions (2000).