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Optimization of GMAW parameters to improve the mechanical properties S.Saravanan1, a*, P.Pitchipoo2, b 1&2 Department of Mechanical Engineering, P.S.R.
Shih Jing-Shiang et al [2] optimized the pulsed GMAW process parameters used for aluminum alloy plate to improve the mechanical properties.
The results of several literatures [8-12] have revealed that welding parameters such as welding voltage, welding current, gas flow rate, wire feed rate, wire size and welding speed significantly affect the mechanical properties of welded joints.
Selection of an appropriate orthogonal array for experiments depends on the number of factors and the number of levels.
However, GRA requires less data and can analyze many factors that can overcome the disadvantages of statistics methods.

The results showed that all the four factors statistically affected the bonding strength (p<0.01).
Introduction Zirconia is widely used in biomedical field as a material for prosthetic apparatus because of its excellent mechanical and chemical properties.
Our previous studies suggested that, core-veneer bonding is slightly related to mechanical interlocking and greatly affected by firing temperature of veneering porcelain.
Their contributions show all factors significantly affected bonding strength.
Whereas factor of veneered porcelain shows the lowest.

Different properties of single fly ashes are affected by various factors, e.g. the coal quality, different combustion conditions, heating plant operation conditions.
Mechanical properties of fly ash based mortars after 7 days of hardening [N.mm-2].
Therefore, achieved mechanical properties of specimens based on particular fly ashes were different due to the variability in the properties of the tested fly ash.
The total content of leached ions affected the mechanical properties of mortars based on alkali activated fly ashes.
Ban, An overview on the influence of various factors on the properties of geopolymer concrete derivedrom industrial by-products, Constr.

Effect of Brazing and Heat treatment cycle on the Mechanical properties of base materials N.
Thus the present work focuses on the effect of the brazing/thermal cycle on mechanical properties and microstructure of the base materials in post braze condition.
This helped in understanding the effect of brazing condition on the changes in mechanical properties of base materials.
Mechanical properties of the two materials in heat treated condition before brazing cycle Material UTS, MPa YS, MPa %El % RA ASTM grain size No.
Since all other effects remains same, grain size is only the major factor affecting the yield strength (YS) of this steel.

The factors that affect the mechanical behavior of structural planes are so complicated that it is quite essential to take an efficient method to quantificationally analyze these factors.
One thing needs to concerned is the complexity of factors affecting the structural planes mechanical parameters.
In order to combine the geometry and mechanical characteristics, there should be a valid method to comprehensively assess the effect of these factors.
Establishment of the Hierarchical Model Based on the existing results[7-15] from literatures about mechanical characteristics affected by various factors, considering the fundamentals of hierarchical model establishment and both the two aspects of structural planes features and external environment, the factors are classified and also the hierarchical model is established in Fig. 1.
(in Chinese) [7] Shigu Du: Engineering properties of rock discontinuities (Earthquake Press Publications, Beijing 1999.

Compression performance of pultruded GFRP (Glass Fiber Reinforced Plastics) can be improved by confined CFRP (Carbon Fiber Reinforced Plastics) sheet, but it was affected by some factors.
Different compression performances on different specimens were found in the experiments, so the influence factors should be studied.
Because of the discreteness of the strength parameters, the numerical simulation method was used to study the influence factors.
The ultimate fracture strain of CFRP sheet can be changed by the thickness of it when the mechanical property of single layer is certain.
Compression performance of CFRP sheet confined GFRP pipe is affected by the mechanical material property of GFRP pipe and CFRP sheet.

Effect of hydrogen on mechanical properties of pipeline API 5L X70 steel T.Bellahcene1,a, J.
The aim of this work is to study the effects of hydrogen absorption on mechanical properties of pipe API 5L X70 steel.
The mechanical properties in static conditions, fracture and fatigue are determined.
Results and discussions 3.1 Static properties The specimen geometry is presented in Fig. 2.
This light difference confirms the tendency of the static mechanical properties. 3.3.

Mechanical Properties and Microstructure of Zinc Oxide Varistor Ceramics H.N.
hnyoshim@ipt.br Keywords: Varistor, Ceramic, Mechanical Properties, Microstructure, Fracture.
There are limited mechanical properties data regarding ZnO varistors in the literature.
Table 1 - Microstructural characteristics and mechanical properties of ZnO varistors.
Green, An introduction to the mechanical properties of ceramics.

Prediction of Microstructure and Mechanical Properties of Weld Metal in Hybrid Laser-arc Welding V.A.
Calculation technique in order to reconstruct the 3D temperature field and predict the microstructure and mechanical properties of the weld metal in hybrid laser-arc welding is developed.
Prediction of Microstructure and Mechanical Properties Solution of the inverse heat conduction problem presents all parameters of the apparent heat source.
The mechanical properties can be evaluated under calculated thermal cycle theoretically by using known models [2] or experimentally by testing specimens.
The proposed procedure allows to evaluate the distribution of microstructure and mechanical properties of weld metal with consideration for real weld geometry.

How to improve the precision of the stamping forming has been one of the stamping researchers concern in the stamping technology.This paper analysis the material stamping performance of AL5052 aluminum alloy sheet,study the influencing factors of forming precision,and find the the mapping relationship between influence factors and stamping forming to effectively predict the forming error .The first part is to analyze the factors that affect the forming process, then get the main factors that influence the part of stamping forming.
In the same cold working rate of plate, its performance curve is stable when anneal within the range of 100~260℃, and it has little effect on the mechanical properties when the holding time is 1~3h.
So the mechanical properties of the different time are also different.
The determination of input parameters: The input parameter refers to a few main factors affected the accuracy of stamping.
Through the analysis of the influence factors, find out the main influencing factors of the numerous factors, establishes the mathematical model of main influence factors, and get the error sources by training the BP neural network weights, and then to approximate the real machining process, and prove the validity of the model.