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A test study of deformation resistance of S50C medium carbon steel in hot rolling process was conducted by using Gleeble 3500 Thermal-mechanical testing machine.
The research of deformation resistance show that not only the flow stress and plastic workability depend on chemical composition of material and microstructure, but also some external factors such as deformation temperature, strain rate, strain, stress state and environmental medium play a very important impact on the mechanical properties of material.
So, it can be used to provide theory basis for accurately calculate mechanical parameters of mill and formulate the rolling technology process.
The relation of strain rate and stress can be expressed by deformation rate affect index, witch value depends on deformation temperature.
(2)Through analysis the influencing factor for deformation resistance, established the plastic deformation resistance mathematic model of S50C medium carbon steel.

Davoodi et al. discussed eight concepts with six criteria, converting qualitative factors to quantitative values in loops one to five.
Type of material and duration of exposure are some of the factors affecting water absorption with temperature and additives.
The use of polypropylene in bamboo fibre composites and their mechanical properties–A review. 
STUDYING THE MECHANICAL PROPERTIES OF HYBRID COMPOSITES USING NATURAL ADDITIVES WITH EPOXY.
Incorporation of palm fiber to enhance the mechanical properties of epoxy.

A theoretical iterative calculation approach is suggested to predict the ultimate compressive stress of the combined structure and then the factors influencing the ultimate compressive stress are analyzed on the basis of this approach.
In order to attain more accurate results, the affection of multiaxial compression on the mechanical properties of GFRP should be taken into consideration.
One of the key factors affecting the predicted value of the combined structure ultimate compressive stress is the selected value for the CFRP rupture strain.
When the CFRP sheet confined GFRP short column is axially compressed, some mechanical properties of the core GFRP will vary with the variation of the axial pressure and corresponding lateral pressure, and cause nonlinear response of the CFRP confined GFRP short column.
The two groups of formulas are both introduced from existing literature, and are applicable to the FRP which is produced by good manufacturing process and of perfect mechanical properties.

The mechanical properties of the material, in as-fabricated condition and after heat treatments, have been investigated by instrumented indentation (FIMEC), dynamic modulus, tensile and fatigue tests.
The main target of this work was to assess how mechanical properties are affected by long-term heat treatments.
Since high-temperature X-ray diffraction (HT-XRD) evidenced that lattice thermal expansion and residual stresses depend on the environmental conditions during heating, further FIMEC tests have been carried out to assess whether atmosphere affects other mechanical properties, in particular the yield stress.
Another factor contributing the stability of the mechanical properties after long-term heat treatments is grain size which substantially does not change.
Dynamic measurements show that Young's modulus of composite is always higher (∼ 20%) than that of the matrix alloy up to 600°C. 2 - Tensile and fatigue tests show that mechanical properties substantially were not affected longterm exposure to temperatures of potential service for Ti-MMC materials.

Mechanical properties evaluated were parallel compression (CP), static bending (MOE and MOR) and internal bonding (IB).
Several studies, using wastes from agriculture as raw material in the production of panels, have already been performed. [19] concluded that the addition of coffee husk in particleboard of Eucalyptus urophylla affects its physical and mechanical properties directly. [9] were able to replace up to 50% of the wood in particulate wood panels with coffee husk and halls. [25] added oat hulls in particleboard of Eucalyptus grandis and obtained values of physical and mechanical properties consistent with national and international standards. [12] developed a panel produced from sugar cane bagasse and polyurethane based adhesive from the castor oil bean with mechanical properties for commercial and industrial use.
TS could be affected by several factors such as insufficient resin content and distribution, poor compatibility between substrate and adhesive, and adhesive properties [26].
Table 2 presents the average values for the mechanical properties of conventional particleboards.
Effect of the incorporation of coffee husks on the physic-mechanical properties of Eucalyptus urophylla S.T.

The finite difference code (UDEC) was employed as the analytical method in this paper and coulomb slip model was utilized to describe the properties of fault provided by UDEC.
Open-pit slope instability factors and possible failure modes were analyzed, besides corresponding numerical simulation was carried out applying FLAC and UDEC (Douglas Stead et.al, 1997).
The mechanical properties of rock mass and fault used in the present investigation are list in table 1.
In this case, the main factor that affects the stability of open-pit slope is d.
Fault parameters affect the plastic distribution of open-pit slope, thereby affecting the possible failure mode.

The abandoned dump geotechnical materials determine its physical and mechanical properties.
The physical and mechanical properties of the geotechnical rock mass the degree composition, bulk density, water absorption, water retention, hardness, bond strength, rheological plastic change characteristics used to characterize the geotechnical properties of the physical aspects of the concept.
The physical and mechanical properties of the rock and soil are a major factor to determine the dump internal deformation or sliding.
Propulsion speed is an important factor affecting dump stability for soft ground dumping site and the high bench dump, the dump line.
Other Influencing Factors.

The paper presents an investigation of deformation in the active region of GaAs laser diodes under operating conditions.Since the properties of bulk material and manufactured diode are not identical,a study of the spectral splitting and polarisation changes caused by mechanical stress in the diode is made.These results are used to calibrate instruments for a study of the deformation due to thermal stress in the diode under operating conditions.This thermal stress can exceed the shear stress required for dislocation motion in the active region of the diode. 1．Introduction Mechanical stress leading to a stress induced dislocation motion is a main cause for rapid degradation[1].But stress alse affects long time degradation[2].For this reason the stress introduced by the production of stripe laser diodes has been the subject of many theoretical and experimental works[3].
The temperature rise vs.the current was determined by the temperature dependent voltage drop at the pn-junction[5]. 2．Experiment Mechanical stress influences the band structure of semiconductors.This is the basis of our measurements of mechanical stress in the active region of laser diodes.Stress in cubic crystals leads to a splitting of the fourfold degenerated ar k=0 valence band into two doubly degenerated subbands.The recombination emission generated by transitions to both subbands is differently polarised and has a small wavelength difference(spectral splitting ∆).
These measurements gave a proportional factor between the stress in the active region of laser diodes with a planar stress state( and the spectral splitting Pa/eV×∆ (3) And therefore: eV (4) For the three-dimensional stress state with a diagonal stress tensor eqn.4 also applies.For eqn.4 we obtain: Pa/eV×∆ (5) is proportional to the shear stress in <101> direction ,leading to the stress induced dislocation motion in the <101>/{111} glide system
The limit of shear stress for dislocation motion can be exceeded for sample with high temperatures under lasing conditions. 4．Conclusion The investigation showed that the heating due to current flow under operating conditions strongly affects the deformation state of the active region of GaAlAs stripe DHS laser diodes.
A temperature rise of 10K can cause a change of of about 5-10MPa.The junction temperature under high current excitation or because of high thermal resistance can produce a mechanical stress, which is higher than 10 Mpa, i.e.higher than the mechanical stress, which is higher than 10 Mpa, i.e.higher than the mechanical stress due to the technolpgy.The limit of shear stress for the dislocation motion can be exceeded, due to the heating of the active region of laser diodes.

Properties.
The properties of samples are summarized in Table 1.
Properties of Two Kinds of Techniques.It shows that composites having higher mechanical and physical properties have prepared by vacuum hot pressing technology(Table 2).One attraction is that the distribution of Mo reinforcements can be helpful in achievement of better mechanical properties of composites.
The distribution of Mo reinforcements can be helpful in achievement of better mechanical properties of composites.
In any case, Cu-3wt. % MoS2-7wt. % Mo prepared by vacuum hot pressing showed the better mechanical and physical properties.

The heat affected zone formed during fusion process typically has different properties from the base material.
This is to eliminate any surface features that might skew the data due to geometry factors.
Mechanical Properties.
These results indicate that the lack of fusion defect greatly affects mechanical properties.
The lack of fusion defects greatly affect the mechanical properties of HDPE piping thermal fusion welds.