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The damage caused by low-energy impact may escape detection in a routine visual inspection of the impacted surface [2]and this damage has a significant effect on the mechanical properties, of which the most serious invisible damage is delamination which may cause a reduction of the compression strength up to 40-60%.
So damage tolerance is an important factor in the design of aeronautic and aerospace components and it is usually studied by determining the compression residual strength after impact (CAI).
Fig.1 Relationship between Impact energy-depth of dent Fig.2 The fixture of CAI test CAI test and compression test of laminates with a hole Compression tests of impact damaged laminates and laminates with holes[3] have been carried out based on the standard D 7137/D7137M-05(Standard test method for compressive residual strength properties of damaged polymer matrix composite plates).
Considering the nonlinear effect during the compressive process, the Nlgeom(This setting controls the inclusion of nonlinear effects or large displacements and affects subsequent steps) is on.

Cathodoluminescence techniques are very useful for the quantitative analysis of microscopic stresses in optical fibers in general, and for monitoring the complicated thermo-mechanical effects related to their manufacturing process.
Residual stresses can affect the optical properties of the fibers because, as a consequence of the stress-optic effect, the refractive index can be changed and loss increases [2].
Theoretical background and experimental procedures Residual stresses in optical fibers are mainly developed during fibre drawing process and they may arise from a superposition of thermal and mechanical factor.
Both for thermal and mechanical origin of residual stress, the incorporation of doping elements with in the core structure plays a main role.
For peak calibration, mechanical loading in the SEM was performed with a miniature bending-jig.

The finished steel strips feature stable mechanical performance, and small difference between longitudinal and cross-sectional.
And the mechanical properties do not vary much with the thickness of CSP strips [1].
Although V-N microalloyed CSP strips have taken on rather excellent mechanical performance and fine microstructure, many relevant phenomena and their causes are not discovered yet.
How do precipitated particles affect austenite and ferrite microstructure?
This implies that some factor promoting the refining of ferrite grains does exist in V-N steel.

Chan Joe Lee and Jae Young Kim have proposed the design method of clinching tools to design mechanical clinched joints with the desired joint strength [4].
Designing a new structure of contoured die When heating sheet metals, the key factor is the structure of contoured die.
The quantity of mesh will affect both the time and accuracy of numerical solutions.
This range of temperature meets the necessity of magnesium alloys with best plastic property (201~240℃).
Mauermann, in: Mechanical joining of magnesium alloys with a heated anvil as counter tool, edited by K.U.

Shape memory effect (SME) TiNi alloys possess a remarkable complex of mechanical and functional properties, which are especially high in nanostructured (NS) and ultrafine-grained (UFG) states [1, 2].
The investigated alloys were annealed at 500 ⁰C for 1 h to obtain the grain structure and to optimize the mechanical properties.
An increase in strain above e = 1 does not influence the functional properties of TiNi-based alloys.
An increase in strain above e = 1 does not influence the functional properties of TiNi-based alloys.
Prokoshkin et al, Structure features mechanical properties and shape memory effect in TiNi-alloys subjected to equal-channel angular pressing, The Physics of Metal and Metallography 100 (2005) 608-61

This quality can be affected along the whole line of process from the moment it is harvested to the moment it reaches the storage bin or warehouse of the wholesalers.
Although variety is the principal factor contributing to grain quality, good postharvest handling can maintain or even improve it.
Earlier studies have also shown that in the Philippines, there are cases where farmers are faced with the problem of not producing enough volume for harvest in one season to warrant the acquisition of a mechanical dryer [3].
Inlet temperature is maintained at 373K where this temperature will not cause any destructive change to the natural properties of the agricultural product.
Tsilingiris, Thermophysical and transport properties of humid air at temperature range between 0 and 100 0C, Energy Conversion and Management, Volume 49, Issue 5 (2007), pp. 1098-1110.

Introduction The inner structure of materials is heterogeneous in the microscopic scale, and their mechanical properties are closely related to the microstructure.
The precipitate sizes and their distribution (PSD) in the alloys change due to phase coarsening, which further affects the mechanical properties of alloys.
Correspondingly, in the numerical investigation it is necessary to link the microstructural evolution simulation (e.g., multiparticle diffusion simulation and phase-field simulation) and the finite element method (FEM) simulation together, and deep analysis on the correlation between the microstructure and the mechanical property needs to be conducted.
In this paper, we investigate the process-structure-property relationship, and the hardness of alloys after phase coarsening.
FEM Simulation for Mechanical Behaviors.

By changing the property of earthquake excitation, ground motion intensity, vehicle speed and so on, the response of Bridge vibration system are analyzed, response law and characteristics of Bridge with LRB under different excitations are investigated systematically, compared with bridge with common bearings.
Intorduction In recent years, as more attentions being paid on seismic hazard and risk, study on seismic isolation of bridges applying lead rubber bearings (LRB), especially mechanics properties of LRB and earthquake response analysis of isolated structure, has been attracting a large of researchers, some valuable research results have obtained [1-4].
Hysteretic curve is determined mainly dynamic parameters of LRB including post-yield , pre-yield stiffness and yield strength，major factor which affects the parameters is the size of rubber, diameter and height of lead plug and shear modulus of LRB, the three parameters of LRB can be resolved after identifying dimension and material characteristics of LRB.
Shear force-displacement relationship of PRB can be granted to ideal elastic-plastic model according to the existing research, mechanical model of pot rubber bearings can be simplified a model which is made up of nonlinear spring in two horizontal and vertical direction.
In ANSYS, mechanical model of isolation bearings can be predigested to a model which is made up of nonlinear spring and damper in two horizontal direction and linear spring in the vertical direction combin14 unit is employed to simulate vertical stiffness; combin40 unit is employed to simulate horizontal stiffness in two horizontal direction, the Influence of bilinear hardening model and damper in combin40 unit can be considered.

The tribological properties of the coatings obtained were examined.
However, the impact of other factors on the degree of WC decarburization during ESD has been studied little.
Miguel, Study of the Properties of WC-Co Nanostructured Coatings Sprayed by High-Velocity Oxyfuel, J.
Chuvilin, Technology and properties of sintered hard alloys, MISA, Moscow, 2001,p. 452 (in Russian)
Żórawski, The microstructure and tribological properties of liquid-fuel HVOF sprayed nanostructured WC–12Co coatings, Surf.

Research on the excellent mechanical performance STRC shown under and after fire relative to SRC, CFST and steel structures is much less.
Finite Element Analysis of Temperature Field Heat Properties of Steel and Concrete.
The temperature field analysis depends on the heat properties of steel and concrete, including density, specific heat and thermal conductivity.
The latest properties for steel and concrete published by Lie (1994) [2] are adopted in this paper.
Water vapor mostly affects the specific heat capacity of concrete.