Search results

The following properties have great influence on the properties of asphalt pavements: mineral composition, surface properties, macrostructure, microstructure, amount of grains, volume fraction.
These factors predict the differences in specific surface areas between dolomite fractions.
High calcian particles carry the properties of calcite in limestone filler.
The tested mineral fillers have hydrophobic properties, which are favourable in asphalt mixtures.
Géber: The selection of asphalt fillers by the comparison of hydrophilic properties; Építőanyag, Vol. 59.

Experimental Procedures The material used in the experiments was AA5052 with its chemical composition and mechanical properties lists in Table 1 and Table 2.
Table 1 Chemical composition of 5052 Aluminum alloy (Wt -%) Al Mg Cr Si Fe Cu Mn Zn Other 95.70 2.2-2.8 0.15-0.35 ≤0.25 ≤0.40 ≤0.10 ≤0.10 ≤0.10 ≤0.15 Table 2 Mechanical properties of 5052 Aluminum alloy Sample Temper [℃] Yield Strength [MPa] Tensile strength [MPa] Elongation at fracture [%] 25 78.9 201.7 15 The welding parameters are shown in Table 3.
Fig.5 Effect of welding time on the peak load of 2.0/2.0/2.0 mm three-sheet 5052 aluminum alloy Fig.6 Effect of button size on the peak load of 2.0/2.0/2.0 mm three-sheet 5052 aluminum alloy Weld fusion (weld nugget) size is the most important factor affecting spot weld mechanical strength [8].
J.Effects of resistance spot welding parameters on microstructures and mechanical properties of dissimilar material joints of galvanised high strength steel and aluminum alloy.
M.Factors affecting the quality of resistance spot welds.

In this paper, index system of the safety of VCM storage tanks was established by analyzing four main factors including 18 indexes, based on accidents statistic and technology experience.
There are many factors which will cause the leaking of VCM, such as mechanical effect (shock), chemical effect (corrosion), higher pressure and incorrect operation.
In order to assess the safety of VCM tanks more credibly, we used analytical hierarchy process (AHP)-fuzzy comprehensive evaluation method to evaluate the safety of VCM tanks, taking full account of the various factors affecting VCM tanks safety and combining the qualitative and quantitative analysis, so as to establish model for safety assessment of VCM tanks.
Establishment of Index System for the Safety of VCM Storage Tanks In view of the complexity of factors affecting the safety of VCM storage tanks and the independence of factors, the study is divided into three levels based on the statistical analysis of VCM leaking accident and the experience of personnel in charge of technology or safety.[2] Specific safety index system of VCM storage tank is shown in Fig. 1.
Level B is criteria that are operation factors, safety reliability of the tank, safety accessories, detection and protection of the tank.

The pulse duration is significantly affecting the EWR.
Nickel based super alloy, Inconel 718 is an aerospace material and considered one of the most difficult-to-machine material which attributed to its ability to maintain hardness at elevated temperature, very poor thermal properties, high toughness, high hardness, and high work hardening rate and consequently it’s very useful for hot working environment.
Copper became the metallic electrode material of choice for EDM even though it wear rate is higher due to the melting point temperature of copper is low but copper have high in electrical and thermal conductivity properties.
The formula for duty factor is stated in Eq. 2.
Journal of Mechanical Science and Technology Vol. 17(10) (2003), pp. 1475-1484.

The mechanical properties of hybrid composites are significantly influenced by the stacking sequence of fibers [7-9].
An additional critical factor affecting the overall durability and lifespan of natural fiber composites is their water absorption behavior.
Mechanical properties of hybrid composite sandwich structure with sisal and E glass fiber.
Experimental investigation of mechanical and erosion properties of twill E-glass/sisal fiber reinforced hybrid polymer composite.
Influence of stacking sequence on mechanical properties of basalt/ramie biodegradable hybrid polymer composites.

And then an integrated formulation is applied to consider the concurrent actions of the multi-affecting factors.
Similar or real structural specimens concluding the partial or entire affecting factors [3] are fatigued.
A collective affecting factor or affecting regularity is determined by comparing the test data from similar or real structural specimens to material specimens.
Chemical composition and mechanical properties of this material is given respectively in Tables 1 and 2.
Probabilistic affecting factors for the groove section are estimated and given in Table 5.

The different numerical models are constituted with the different material constitutive models in this paper, with the different section fiber division and other factors.
The results show that the different concrete constitutive model and the hardening of the steel constitutive model are the important factors of the accuracy of model, and the Gaussian integration points have 3~5 are bitterly for the simulate mode.
The Material Constitutive Model Material constitutive model is one of the main factors that affect the numerical calculation accuracy.
Mechanical properties of the materials Table. 2 materials yield strength (MPa) peak strength (MPa) elastic modulus (MPa) steel box girder 355 521 1.97×105 steel strand 1670 1860 1.95×105 common reinforced 335 518 2.04×105 concrete / / 3.58×104 The materials of concrete used C60.
Conclusions This study used the fiber model method with the OpenSees[1] for an externally prestressed composite beam to carry through the numerical simulation under static bending load, through control to the test results, this paper advanced several factors affect the accuracy of numerical simulation combined with the modeling analysis.

Effects of La2O3 on the Piezoelectric Properties of Lead-Free (Bi0.5Na0.5)0.94Ba0.06TiO3 Piezoelectric Ceramics� � Y.
BNBT with a rhombohedral-tetragonal morphotropic phase boundary (MPB) composition (i.e., Bi0.5Na0.5TiO3 +6mol% BaTiO3) have been reported to show fair piezoelectric properties for a high frequency ultrasonic application because of a lower relative permittivity [K33 T ], a relatively high electromechanical coupling factor [k33], and a high frequency constant [Np � 3000Hz�m] as well as good mechanical properties [6].
Fig. 4(b) shows electromechanical coupling factor (kp) and mechanical quality factor (Qm) as a function of La2O3 content in BNBT system.
Mechanical quality factor was shown to reduce considerably with increasing La2O3 content.
On the other hand, the mechanical quality factor was abruptly decreased with increasing La2O3 content.

The influence of granularity of the waste foundry sand on the microstructure and physical-mechanical properties of the autoclaved aerated concrete was monitored.
Nowadays many types of ashes, other by-products or waste from industrial production are possible to use in autoclaved aerated concrete production. [1, 2] The most important factors influencing the physical-mechanical properties of autoclaved aerated concrete is its microstructure, type of used binder and filler, porosity and pore size.[3] The autoclaved aerated concrete is produced in few following steps.
The pore structure significantly affects the physical-mechanical properties of autoclaved aerated concrete.[3, 4] After the material hardens in order to increase its physical-mechanical properties the autoclaving is applied.
Structure and properties of aerated concrete: a review. 
Relations between structure and mechanical properties of autoclaved aerated concrete. 

The Effects of Cu Content on Microstructure and Mechanical Properties of Thixoformed A319 Aluminium Alloys M.S.
The effect of copper contents on the microstructure and mechanical properties of A319 aluminium alloy in thixoformed conditions was investigated.
Image analysis of the specimens was conducted by using computerized microscopy and Image-J software to calculate the shape factor (SF) and grain size (GS) of the α-Al phase.
CuAl2 was greatly influence the mechanical properties of the alloys.
Ding, Effects of rheocasting and heat treatmet on microstructure and mechanical properties of A356 alloy, Materials Science and Engineering A.