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The thermal fatigue properties of the solder joints with various underfills were evaluated by thermal shock test.
It was known that the full curing which has lower curing temperature and a longer curing time of the underfill leads to lower thermal stresses and better physical and mechanical properties.
From these results, it was identified that the properties of underfill affected the thermal fatigue performance of flip chip package.
The factors which were affecting the electrical resistance increase of the package were consisted to be the growth of IMCs, the existence of void in the solder or underfill, and the delamination.
It was indicated that the underfill C, which had the properties of highest Tg and lowest CTE value, had the best resistance to the thermal fatigue failure.

Those are properties such as (strength, heat-insulating properties, water absorption, etc.) of concrete throughout the entire volume of the product.
[7] Zhang, S., Cao, K., Wang, C., Wang, X., Wang, J., Sun, B.: Effect of silica fume and waste marble powder on the mechanical and durability properties of cellular concrete.
[8] Anvar, A., Shaumarov, S., Elena, S., Ulugbek, S.: New method for diagnostic of heat engineering and mechanical properties of cellular concrete.
[18] Dmitriyevich, S.V.: Structure and properties of nanomodified cement stone 177 (2008)
[19] Vu, K.D., Bazhenova, S.I.: Modeling the influence of input factors on foam concrete properties.

When the nitrogen content is 0.28%, the optimum mechanical properties of 06Cr19Ni10 steel are obtained.
It can be seen from the figure that N significantly affects the room temperature impact properties.
Tested steel tensile properties at room temperature.
Plastic flow behavior and its relationship to tensile mechanical properties of high nitrogen nickel-free austenitic stainless steel[J].
The effect of the solution treatment onto the microstructure and mechanical properties of MAG pulsed welded joints from X2CrNiMoN22-5-3 duplex stainless steels[J].

Design of Walking Stepless Speed System for Caterpillar Feeding Combined Harvester Lou Xi-yin Department of Mechanical & Electronic Engineering, Huzhou Vocational Technology College, Huzhou 313000, China Key words: mechanical design; stepless speed system; hydraulic; simple structure Abstract: Hydro mechanical stepless speed system is a new conbination system of hydraulic transmission and mechanical transmission, which realizes the stepless speed change through the hydraulic transmission and the mechanical transmission to reduce the speed and torque, and to improve transmission efficiency; through optimizing design, The system can realize the differential steering, increase ground clearance.
Because the gearbox assembly mounted on the chassis underside, ground clearance is minimal, affected the combine harvester of paddy field through.
At present, the crawler combine rice production at home and abroad, mostly can not adapt to the work in the paddy field mud depth of 200mm, the inferior a series of questions become the factors hindering the development of southern rice combine harvester.
The layout is flexible and convenient, fretting properties, comfortable operation,this system can accurately control the working parts, driving torque output and speed can be independent of the input speed adjusting to a large extent, so that the combine harvester can run in a stable , high efficience, energy saving, and noise reduction condition.
Semi-hydraulic and Semi-mechanical Driving Systems of Caterpillar Combine.

The diversities and relations of microstructures and properties between the center and surface layer in thick-plate 7150 alloy were investigated by means of OM, TEM, SEM and tensile tests.
But it is difficult to ensure the uniformity of deformation, microstructures and properties along the thickness of the thick plate [8].
And this work is desired to find out the differences and relations between properties and microstructures in the center and surface layers of the thick-plate 7150 alloy under deformation gradients.
Mechanical properties.
Rosenfield, Metallurgical factors affecting fracture toughness of aluminum alloys.

The magnitude of the plastic shrinkage and the increase of the associated mechanical properties depend on the different parameters (porosity, elastic properties and structural features).
In the literature, the elastomechanical properties of aerogels are tested either by sound velocity measurements [3, 4,]), or by static techniques (uniaxial compression [5], diametric compression [6] and three point bending [7].
Two kinds of information will be analyzed: the evolution of the elastic properties due to plastic shrinkage and the associated structural changes by small angle scattering ( SAXS).
The elastic properties will give insight into the evolution of the connectivity, and the SAXS data will help quantify the eventual transformation of the cluster: cluster size and internal compactness (fractal dimension). 2.
This densification process, by the elimination of the larger pores without changing the internal cluster structure, allows synthesizing different kinds of porous glasses having strongly different physical properties, such as stiffness and mechanical properties, but also acoustical properties and permeability References [1] R.

In present work, the force-state mapping technique is successfully applied to the honeycomb paperboard dynamical properties modeling problem.
A experiment system is set up to learn the dynamic properties of the honeycomb paperboard.
Experiment results show paper honeycomb structure factors, have a certain effect on the impact behavior of paper honeycomb sandwich panels.
Tab.1 Parameter values of honeycomb paperboard L[mm] 30 40 50 60 k[106N/m] 12.508 9.242 7.628 6.070 c[Ns/m] 849.9 840.0 705.3 633.7 k3[1010N/m3] 2.469 47.815 176.980 240.372 Damping ratio 0.0380 0.0389 0.0404 0.0406 From Tab.1, the height of the honeycomb paperboard L is an important factor who affect the dynamic properties.
The model for the dynamic properties of honeycomb paperboard can be used to predict the vibration transmissibility of the packaging system.

The effect of lipase load (LL), time reaction (TR) and stearic acid (ST) on CBE properties were studied to produce nearly similar CBE properties to CB.
Several factors such as premium price, uncertainty in supply and variability in quality, have prompted the development of specialty fats fully compatible with the physical and sensory properties of CB.
Experiments were conducted to study the factors, such as lipase load, time reaction, and the addition of stearic acid affecting the properties of CBE.
Properties of CBE Analysis of Fatty Acid Profile (Omega-3 and Omega-6).
Properties of CBE Fatty Acid (Omega-3 and Omega-6).

Wood modification, which results in water intake reduction and also serves to maintain the low equilibrium moisture, may significantly improve the properties of wood, reduces the caused volumetric changes and extends its durability.
Increased intake of water in liquid or gaseous state negatively affects other physical - mechanical properties and durability [11, 12].
Possibilities of Wooden Modification Wood resistance to attack from biological and abiotic factors is increased by chemical protection, when used chemical agent does not change material structure.
Biological resistance is not affected
La Bayon, The potential of silicone-based formulations to enhance wood properties through industrial treatment for outdoor use, The International Research Group on Wood Protection, Stockholm, 2011

This study, as it works on the properties of in-site foamed concrete with the air-dried density higher than 0.7t/㎥, the compressive strength higher than 2.0N/㎟ and the thermal conductivity higher than 0.19W/mK, sets foam ratio and foam agents as the experimental factors and manufactured various foamed concretes that are different in density.
The properties of the foaming agents used in the study are shown in Table 3.
Se-Chul, A Study on the Properties of Foamed concrete with Admixtures, Thesis of Doctor’s degree in Konkuk University. (2015) [2] J.Jae-Keun, et al, An Experimental Study on the Mechanical Properties of Lightweight concrete Within Expanded Polystyrene Beads, Archititectural Institute of Korea, AIK’s Autumn Conference Vol. 23 No 1:243-246. (2003) [3] J.
Dae-Hoi, An Experimental Study on the Physical Properties of Roamed Concrete with Blast-Furnace Slag, Archititectural Institute of Korea, Vol 18, No7 59-67. (2002) [8] P.
Paulo Monteiro, Concrete: Microstructure, Properties, and materials, McGraw-Hill, San Francisco, 49-67. (2004) [9] W.