Search results

Since the electronic packages are made of many kinds of materials which may have different properties at different temperature [6].
Many researchers [7-9] investigated the interfacial properties between different materials; they provided the useful equations and experiemntal data.
Lee and Lee [10] studied the mechanical properties of EMC which provided the fracture strength of EMC.
The stress intensity factors at interface and in the package were calculated first, then the strain energy release rates were obtained and used to evaluate the delamination growth.
In analysis, the stress intensity factors for mode I and mode II at the crack tip were found by extrapolating the data obtained at several points away from the crack tip and by making r approach zero.

Based on these data, an analysis on various factors that affect the ductility of concrete filled steel tubular columns is conducted.
Based on the experimental data, the energy dissipation characteristics and the cumulative damage of the structure are compared with that of the numerical analysis by finite element method, to analyze the main factor affecting the plastic hinge formation.
Considering the above three factors, 7 specimens are tested based on the orthogonal method.
Fig. 4 Skeleton curves of the specimens with different influence factors.
In [8], the longitudinal tangential direction is compared with the horizontal cutting direction, and it is concluded that the basic mechanical properties in the horizontal cutting and vertical cutting are essentially similar.

The mechanism properties of Y element in ZK60 and its effect on microstructure were analyzed. as well as heat treatment process for ZK60 and ZK60 +1.0Y two influence of alloy microstructure and properties were investigated.
Wrought magnesium alloy cast products is relatively diverse and excellent mechanical properties and other characteristics of the product shape gradually received wide attention.
Affect Liujiang Wen.
Yttrium and rare earth elements on microstructure and properties of Mg-Al-Zn alloy.
Special Casting & Nonferrous Alloys .2003.5 [7] affect Miss Cheung, Luli Qi.

Mainly, wooden sleepers are exposed to wood-destroying fungi, under the influence of which mechanical parameters decrease and the physical and chemical properties of wooden sleepers change.
Sleepers operated in the open air are under constant influence of climatic factors of destruction.
Antiseptics are used to protect wooden sleepers from the effects of damaging factors.
The presented results were obtained within the framework of the state task "Initiative scientific projects" on the theme No. 13.5443.2017 / BC "Modification of the physical and chemical properties of wood biomass affecting the performance characteristics of the materials being created".
Sadrtdinov, Thermal Insulation Properties of Wood Polymeric Sand Composite, Solid State Phenomena, 284 (2018) 986-992

The study opens new perspectives for controlling particle agglomeration and dispersing based on temperature, concentration, and the physical properties of the medium.
It was found that adhesion significantly depends on the surface properties of the particles and the medium's parameters.
This process is critical in numerous scientific, industrial, and technological applications, as it ensures uniform properties and functionality of the resultant materials or mixtures.
It should be noted that this effect is smoothed out at high particle concentration, which is justified by several physical and chemical factors that affect the behavior of particles in such systems.
Huliieva, Prediction of the structural properties of powder materials by 3D modeling methods.

The microstructural changes which occurred during annealing have a significant effect on the mechanical properties.
Grain refinement leads to an improvement in some mechanical properties according to the HallPetch equation [6] and might improve fatigue properties [7] and wear resistance [8].
Measurements of the microhardness using a load of 200 g was used to asses the mechanical properties of the samples.
The shape factors are lower, demonstrating that grains became more equiaxed.
The influence of the type of nanostructure on the mechanical properties of 316LVM steel is the subject of ongoing research.

Safety Range of Braking Force Distribution For general cars, according to the factors like distribution of braking force of front and rear axles, road adhesion coefficient and so on, the following three conditions may occur during braking: 1.
Therefore, the brake force distribution will affect the direction stability of the vehicle when braking.
As the main power unit of electric vehicle, the overcharging seriously affects its cycle life and safety.
By introducing a weight factor c so the vehicle braking recover energy can be limited.
At the same time it meets the mechanical properties and prevents battery overcharging effectively.

In particular, aging and corrosion are the main causes of damage affecting the durability of steel bridges.
Rail material in compliance to China standard GB2585-89, in which mechanical property of rail material is given in Table 1.
The mechanical and physical properties of wooden sleepers are taken from TCVN 1462–86 and TCVN 1072: 1971, and refer to the research of Record [16] (see Table 1).
Table 1 Material properties of the rail bridge.
[16] Record, S.J., The mechanical properties of wood: including a discussion of the factors affecting the mechanical properties, and methods of timber testing. 1914: J.

It was found that the particles had irregular shapes and sizes, and the presence of voids affecting the strength of the material.
Geopolymer’s mechanic properties are complex and affected by a large variety of synthesis parameters, including material properties, feedstock geopolymerization degree, chemical composition (for example, Si/Al ratio) of the geopolymer binder, the relative fractions and the non-active loads, inactive fillers characteristics (particle size, form and intensity, for example), porosity and density, impurity elements (Ca, Mg, Fe, for example), and parallel associated reactions [3].
The results show a not significative effect to the 95% probability level to the main factors (bauxite mud, calcined RHA and metakaolin), as the P value was higher than 0,05.
The micrographies of the geopolymer materials show particles with irregular sizes and shapes, as well as presence of empty spaces, due to water evaporation in the heal time, affecting the flexion resistance of the material.
Davidovits, Properties of geopolymer cements.

Gao Yongjing measured the elastic modulus of rubber by digital speckle method, and proved that digital speckle correlation method can be used in rubber mechanical property test [4].
Liu Wenjing studied the damping effect of the rubber element, and analyzed the factors causing the fatigue of the rubber joint through the strain field and the strain energy density field [5].
The polyurethane rubber material studied in this paper, because of its polymer properties, Poisson's ratio close to 0.5, the difficulty of large deformation to be predicted and other factors, using this measurement method is efficient and feasible.
If we can remove these interference factors such as noise data and bright and dark points, the data will be more effective.
Determination of compression stress-strain properties of vulcanized rubber or thermoplastic rubber GB/T 7757-2009 [S].