Search results

This can lower its energy consumption and pollution by reducing the mixing and compaction temperatures of the asphalt mixture without affecting its properties.
Cecabase RT 945 enables to reduce the asphalt mix production and lay down temperature by 20 to 40°C and keeps the same mechanical properties as a standard HMA [14-16].
The viscosity properties for the binders in the original state, the rutting properties in the original state and after RTFO aging and the fatigue cracking properties at intermediate temperature after RTFO + PAV aging methods were evaluated.
Dynamic Shear Rheometer Test [23] A stress-controlled HAAKE dynamic shear rheometer (DSR) was used with 25 mm parallel plates to characterize the mechanical properties of the control and modified asphalt binders prepared under temperatures ranging from 46 to 70 0C and loading frequency at 10 rad/s (1.59 Hz) [23].
Amirkhanian: High temperature properties of rubberized binders containing warm asphalt additives.

It is found workable to predict factors influencing shearing strength using BP neural network with given soil properties.
Factors influencing shear strength mainly come from soil properties and stress state[3].
Physical properties can be obtained from laboratory soil tests which take little time, whereas mechanical properties tests whose target parameters are easily interfered take a long time, reducing reliability of the results.
It is reasonable to speculate the mechanical properties through physical properties since they are internally related[4].
Table 2 shows the level and factors in the test.

As Ti-Ni SMA has fascinating properties and bio-compatibility, have been considered for present work.
Physical and mechanical properties of materials are shown in Table 1.
Table 1: Physical and mechanical properties of materials Properties Ti-Ni SMA Melting point ( ̊C) 1250 Density (Kg/m3) 6450 Thermal conductivity (W/m*K) 10-18 Specific heat (J/Kg*K) 490 Transformation enthalpy (J/Kg) 28000 Modulus of elasticity (GPa) 55.632 Yield strength (MPa) 580.348 Ultimate tensile strength (MPa) 989.188 Elongation at fracture, martensite (%) 31.20 Transformation temperature range ( C) -100 to +110 Corrosion resistance Excellent Biological compatibility Excellent The above mechanical properties were measured using a CNC universal testing machine (Model – Unitech 1650- TS, Fuel instruments and engineers, India) by using extensometer as shown in figure 2.
In Taguchi method, the raw data is transformed into S/N ratio values which adduce the most significant parameters affecting the material MRR, SR, KW and DD during the machining of Ti-Ni SMAs.
Four controllable three-level factors and four response variables were considered.

The properties of cellular concrete depend on the formed cement matrix structure, the strength of the inter-pore partitions.
Concrete, despite its remarkable properties, has a number of significant drawbacks.
The composition of fiber foam concrete was optimized for which the ratio of three fractions of crushed slag is taken as the variable factors in the design of the experiment: Slag1 (0 to 0.63 mm), Slag21 (0.63 to 1.25 mm), Slag3 (1.25 to 2.5 mm), and as an optimization parameter - the strength of fibro-concrete to compression.
Makarichev, Cellular concrete (technology, properties and designs).
Martynenko, Influence of the Characteristics of the Interporous Partition on the Physicotechnical Properties of Cellular Concrete.

Land wheel is an important part of vegetable transplanting machine, its strength directly affects the whole performance.
The failure of land Wheel may be related to the mechanical properties of it’s material, type of loads, stress, shapes and sizes of the components, temperature and other environmental factors.
Mechanical vibrations were form the inner excitation or the outer excitation in the wheel’s  working.
Finite Element Method of Mechanical Design [M].
Mechanical and Electrical Engineering Technology. 2005(2):51-53 [11] Mahdi,E.

The quality of the product is verified by testing different properties.
Introduction Manufacturing processes produce constantly vast amounts of data concerning the product quality and factors that affect it, including the chemical composition, process settings and measured values of the process variables.
An improvement in the prediction accuracy of a rolling temperature leads to an economically significant improvement in the quality properties of the final product, namely flatness and mechanical properties.
There are two individual mechanical property data sets gathered in different factories.
The mechanical properties are measured with standardized tests and they are performed regularly for each customer order to assure the quality.

The real outdoor exposure is never fully reproducible as it comprised of many physical and chemical factors, and varying in intensity and time [2].
The accelerated aging also affected the aesthetic appeal in applications as well as extensive loss in their properties [7].
To have a clear and understanding effect of accelerated aging cycle, future work should be focused on mechanical properties (tensile, bending, impact) of the composites.
Foreman, “Influence of accelerated ageing on the physico-mechanical properties of alkali-treated industrial hemp fibre reinforced poly(lactic acid) (PLA) composites,” Polym.
Bienvenu, “Impact of aging conditions on mechanical properties of thermoplastic polyurethane,” Mater.

We can select appropriate mathematical model according to the requirements of the practical sample, then describe quantitatively the main factors and mutual relations of heat cycle parameters. 1 Background 1.1 Mathematical models (1) Hannerz mathematical model ) ) )(21300(3002 )800()500( exp( )21300(300 )800()500( 2 0 max 0 2 0 2 0 0 2 0 2 0 0 tTTT e T Tt tT T Tt TT − − −−−∆ − − −∆ +=
This system draws actual curve by setting curve through collecting data real-time, and completes the welding heat cycling of samples at the same time, then finishes material's analysis at the aspect of welding through the measured curve and the condition of the sample's properties after heat treatment. 2.
Welding heat cycle curve not only can reveal the main factors and relationship which are affected by the heat cycle parameters, but also anticipate the welding heat-affected zone with different welding process parameters, especially has an impact on the coarse-grained metal structure and properties near the fusion line.
So it has an important reference value to the evaluation of material's welding property and the choice of welding rules.
[4] Lenard J G, Pietrzyk M, Cser L: Mathematical and Physical Simulation of the Properties of Hot Rolled Products, edited by Oxford: Elsevier Science Ltd.

By testing the stress and strain conditions of the corrugated steel pipe culverts under different fill heights with FBG sensors set in the inner and outer of the culverts, the mechanical properties of the steel pipe culverts could be obtained.
During the utilization process under normal conditions, disconnecting, cracking, or infiltrating of round pipe can be caused due to the cracking or deforming of the grouted foundation, and the subsoil absorbs water and becomes saturated or is washed out, causing damages on the subgrade and affecting the endurance of the pavement structure.
Factors, including depth of filled soil, vehicle loads, diameter of corrugated pipe and thickness of wall, waveform and ripple parameters, foundation deformation, etc., affect the stress of the corrugated steel pipe culvert.
By keeping other factors constant, mechanical analysis can be conducted on the corrugated pipe to study the stress characteristics of culvert under the influence of a single factor.
Summary In this study, we investigate the property of the fiber optic test technology in deformation monitoring of highway corrugated steel pipe culvert.

Sn-Ag-Cu series solder has the following advantages: better heat circulation performance; good creep resistance; narrow melting point range; applicable to welding of any product; less affected by the ingredients and so on.
NUMERICAL MODEL AND MATERIAL PROPERTY Papers research Sn3.5Ag0.75Cu lead-free solder at different temperatures and different strain rate, and FR-4 substrate interface stress distribution.
Mechanical properties of Sn3.5Ag0.75Cu Material Tensile strength （MPa） Yield Strength （MPa） Sn3.5Ag0.75Cu 92.66 68.035 Table 1 indicates that the finite element analysis of isotropic materials, mechanical properties, Table 2 indicates that the room temperature, Table 3 indicates that the lead-free fiber material Sn3 .5 Ag0.75Cu mechanical properties and Sn3.5Ag0.75Cu material parameters of the visco-plastic model.
The results from the point of view: Sn3.5Ag0.75Cu lead-free solder at low temperature has a strong rate of relevance, to the high-temperature zone, expressed as rate-independent nature; another, Sn3.5Ag0.75Cu Lead-free solder temperature very sensitive affected by temperature greater at higher temperatures, with a strong temperature dependence.
Numerical Analysis on the influent factors of the interface stress of 63Sn37Pb under the temperature cycle condition [C] ICRMS2009.V2:P1230-1233