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The mechanical properties of A356 aluminum alloy are tested according to GB6397-86.
Fig. 2 Morphology and size of A356 alloy rod mechanical properties Results and Analysis A356 alloy has good process performance and mechanical properties, and it is widely used.
Therefore, the mechanical properties of the alloy are affected by the morphology of the silicon particles and the dendritic size.
Effects of Deformation Temperature on Microstructure and Mechanical Properties of 3003 Aluminum Alloy.
Effect of melt treatment on microstructure and mechanical properties of AA3003 aluminum alloy.

Goldschmidt introduced a tolerance factor (t), defined by RA, RB, RO are the radius of A, B, and O ions, respectively.
In general, the tolerance factor (t) is 0.8These small changes always have an important impact on the physical and chemical properties in the structure of perovskite materials.
Thus contributing to the properties change of oxygen adsorption and desorption and improving the catalytic activity.
Lu et.al [7]used several methods to synthesis LaMn0.8Mg0.2O3, and discovered the different preparation affect crystal structure, particle size and oxygen species in a large degree; consequently affect the methane catalytic activity.

Introduction Beam structure is used very commonly in mechanical engineering and advanced materials.
In 1972, Rice and Levy[7] proposed a linear spring model to make the three dimension problem into three dimensions which can be applied to calculate the stress intensity factor of surface crack.
As for the material properties, the modulus of elasticity E is 196109 Pa, the densityis 7860kg/m3 and the Poisson's ratio is 0.3.
For the second frequency, in addition to the principle mentioned above, the distance between node and crack also affects the natural frequency.
The methods mentioned in this paper could provide the theoretical, numerical and experimental basis for the identification of cracked materials, mechanical engineering and the relevant study.

The well-known category of spinel ferrites CoFe2O4 has gained more interest of researchers due to their many valuable properties like high chemical stability, remarkable mechanical hardness, moderate saturation magnetization, and high coercivity.
Dielectric properties.
Dielectric properties depend on some key factors such as doping concentration, a different type of annealing with variant time, preparation technique, structural homogeneity, grain size, porosity and density [21].
Caltun, Magnetic and dielectric properties of Co-Zn ferrite, Mater.
Ishfaq, SEM, FTIR and dielectric properties of cobalt substituted spinel ferrites, J.

Research on the simulation method for I.C.E structural acoustic radiation Zhang Bao-Cheng, Zhang Guang-Jiong and Zheng Bao-Qian College of Mechanical Engineering & Automatization, North University of China, Taiyuan, China ncitzbc@nuc.edu.cn Keywords: internal-combustion engine; structure vibration; structural acoustic radiation Abstract.
Taking into account the main structure of I.C.E, the internal fluid, external accessories and mount installation conditions and many other factors, a simulation study and relevant test validation of the structure of radiation noise problems with the diesel engine were carried out 1.
DY�AMICS CHARACTERISTICS A�D DY�AMIC RESPO�SE A�ALYSIS OF WHOLE STRUCTURE The dynamics characteristics and dynamic response analysis of the I.C.E structure is significant affected by the internal fluid, the exterior appendix, the suspension installing conditions as well as other factors.
Besides, the above three factors must been taken into account when analyzing and predicting the structural-acoustic radiation of I.C.E.
By definition in formula (2), the ATV is completely determined by the configuration of the acoustic system under consideration and therefore only depends on the system parameters: the geometric of the vibrating surfaces, the field point location and analysis frequency of acoustics response as well as the physical properties of acoustic transmission medium (speed of sound & fluid density), but has nothing to do with the operational structural response.

In addition, the results indicate that the heating temperature affects the limiting reduction in area.
Moreover, we focused on strain rate sensitivity index m value to investigate the factor which affects the limiting reduction in area.
Therefore, the m value is one of the key factor of material properties in superplastic dieless drawing process.
The m value is one of the key factor of material properties in superplastic dieless drawing process.
Iwazaki, Superplastic backward microextrusion of microparts for micro-electro-mechanical systems, J.

Creep Life Prediction of Waspaloy using the Initial Strain Parameter Technique Seon-Jin Kim 1, a, Yu-Sik Kong 1, b, Won-Taek Jung 1, c, Jong-Taek Yeom 2, d and Nho-Kwang Park2, e 1 School of Mechanical Engineering, Pukyong National University, Namgu, Busan 608-739, Korea 2 Dept. of Materials Processing, KIMM, Sangnam-dong, Changwon 641-010, Korea a sjkim@pknu.ac.kr, bkongys@pknu.ac.kr, cweld27@yahoo.co.kr, dyjt96@kmail.kimm.re.kr, e pnk@kmail.kimm.re.kr Keywords: Creep life prediction; Creep rupture time; Initial strain parameter technique (ISPT); Larson-miller parameter (LMP); Waspaloy.
Introduction When a material is exposed to high temperatures coupled with various mechanical and thermal loading, the deformation and damage due to static creep and dynamic creep are expected.
Thus, it causes repair, maintenance, property degradation, and life reduction.
Consequently, it was clarified that the initial strain affects the creep properties and can be very important criterion for predicting or conjecturing quantitatively some various creep properties such as creep stress, creep rupture time, and so on. 0.1 1 10 500 600 700 800 900 1000 2000 550°C 600°C 650°C 700°C Creep stress, σ (MPa) Initial strain, ε0 (%) 0.1 1 10 1 10 100 1000 550°C 600°C 650°C 700°C Rupture time, tr (h) Initial strain, ε0 (%) Fig. 1 Creep stress vs. initial strain Fig. 2 Rupture time vs. initial strain Creep Life Prediction by ISPT.
But, it is necessary to investigate the comparison through more experimental data in future. 100 101 10 2 103 500 600 700 800 900 1000 2000 550°C/Experimental 600°C/Experimental 650°C/Experimental 700°C/Experimental LMP/Calculated ISPT/Calculated Creep stress, σ (MPa) Creep life (Rupture time), tr (h) 100 101 10 2 103 500 600 700 800 900 1000 2000 101 10 2 103 101 102 103 Range of "Factor of 2" 550°C 600°C 650°C 700°C Experimental rupture time, tr (h) Calculated rupture time, tr (h) Fig. 3 Comparison by ISPT and the LMP Fig. 4 Comparison by ISPT data Summary The creep properties such as creep stress and rupture time had quantitative relationship with the initial strain.

Their practical use requires the following properties: avoiding short-circuits between neighboring wires, producing a minimum of toxic gases and dark smoke during pyrolysis, and keeping good mechanical properties.
Since Mg 2+ and Al3+ are distributed in these octahedral structure spaces randomly and form the positively charged basic layer, the doping of Sr 2+ affects this kind of distribution of Mg 2+ and Al3+ in the octahedral structure spaces.
Consequently, the hydroxyl in this kind of hydrotalcite basic layer is likely to produce much slighter displacement of the negative ion O 2 so as to satisfy the balance of the electronic valence, which affects the bond combining and distance between the basic layer [Mg6-xSrxAl2(OH)16] 2+ and the middle layer [CO32+4H2O]2.
And their mechanism equations are as follows [4]: T E tf a R lnA] d)( d [ln −= α α (1) T E E G R 4567.0 315.2) R A lg()(lg −−= β α (2) TE AE R/4567.0315.2)](RG/lg[]lg[ −− = α β (3) where α is the decomposition rate; T is the absolute temperature; A is the former factor; G(α) and f(α)are the mechanism functions; β is the heating rate.

Introduction Nitrogen as an alloying element has several beneficial effects on mechanical properties of steels, especially related to an excellent combination of high yield strength and good fracture toughness [1,2].
Precipitation behavior of austenitic HNS has been studied mainly focusing on (i) the effect of nitrogen addition on the precipitation of the second phases [4], and (ii) the precipitation of Cr2N [5], together with its detrimental effects on properties of HNS [1].
Therefore, it can be deduced that the Cr2N precipitation did not affect the orientation rotation during deformation.
It is known that the deformation twinning in f.c.c. materials is generated by the combined movement of partial dislocations on }111{ plane and, thus, the dissociation of perfect dislocation is a controlling factor [3,7].
The Cr2N precipitation did not affect the orientation rotation during deformation. 3.

Characteristics of Mechanically Fastened Joints of Single-layer Bitumen Sheets Tomáš Petříček1, a *, Jan Plachý 2,b, Petr Kacálek 3,c, Radim Smolka 4,d 1,3,4 Brno University of Technology, Faculty of Civil Engineering, Institute of Building Structures, Veveří 95, 602 00 Brno, Czech Republic 2 Institute of Technology and Business in České Budějovice, Okružní 517/10, 370 01 České Budějovice, Czech Republic apetricek.t@fce.vutbr.cz, bplachy@mail.vstecb.cz, ckacalek.p@fce.vutbr.cz, dsmolka.r@fce.vutbr.cz Keywords: Single-layer waterproofing, bitumen sheet, mechanical fastening system.
The low-temperature and high-temperature properties are substantial for modified bitumen substances.
These properties depend on numerous factors – composition of the primary bitumen substance, quantity, type and composition of the modifier and the filler.
The high-temperature properties of bitumen substances are particularly influenced by the content of asphaltenes, the quantity of polymer and by the molecular quantity of the individual polymer substances.
Conclusion The measurements performed show that the degree of bitumen substance modification affects the ability of a mechanically fastened joint to transfer defined stresses.