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Regarding to the mechanical characteristics of natural fibers, due to the characteristics of polymeric fibers, their mechanical properties are determined by the resistance of inter and intramolecular bonds and the polymer chains formation [18].
Fibers insertion is an important factor, as they lead to the improvement of mechanical properties that inhibit cracking.
The use of natural fibers as reinforcement depends, among others, of their mechanical properties, thus, an improved mechanical behavior of these fibers is necessary for the development of new composite materials.
Hale, A study of the potential of acetylation to improve the properties of plant fibres.
Physical properties of edible films based on cassava starch as affected by the plasticizer concentration.

This is the key factor that leads to the poor mobility of the blank material and local thinning, cracking, wrinkling and other defects in forming process.
Finally, the part leaves the hot-stamping about 150 ºC and with high mechanical properties: an ultimate tensile strength of 1500MPa or much higher and little spring-back [3-5]. chematic of hot-stamping process is shown in Fig.1 and finite element model of Collision beam is shown in Fig.2.
Figure 1 Schematic of hot-stamping process Figure 2 Finite element model of Collision beam Hot-stamping FE model of collision beam Definitions of material properties for hot-stamping process.
In order to get reliable modeling and numerical simulation of hot-stamping process, the determination of the thermo-mechanical material properties is one consideration.
The other material properties are given in Table1 to Table 4

CFRP for aeronautical are subjected to both mechanical loading and exposed to severe environmental conditions.
Combined with the temperature effects, these factors may cause significant changes in the matrix toughness affecting the laminate strength[10].
Moisture absorption may induce mechanical and physico-chemical changes in the polymeric matrix and deteriorate matrix–fiber interface by interface debonding or microcracking.
Mechanical properties normally decrease with increased moisture content and voids facilitate moisture absorption[10,13].
It is noted that the voids significantly affect the characteristics of the diffusion rate and equilibrium water absorption content (Mm) as listed in Table 2.

Mold design for a composite core-pulling mechanism Yanfang Yin*, Huashun Hu School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan，430030，China 1061942941@qq.com Keywords: ,Core-pulling, Design Analysis, Modeling, Composite Abstract.
The study is a one-dimensional analysis of secondary–ejector mechanism, based on a forward marching technique of solution for the simple structure and high safety and reliability. 3D numerical simulation of the different stages is considered: during processing, anisotropy of the stress state build up affects its mechanical or dimensional properties once the part is ejected.
Using the simulation analysis of mechanical system based on Pro/E, the mechanism can solve the problem that plastic parts are difficult to side core pulling in different directions by the use of bevel pillar.
This area, often neglected during mold design, is an important factor in the life of the mold and in part quality.

In previous study, the mechanical properties of biocomposite bacterial cellulose-chitosan still too rigid and did not meet the standard.
Then there is a reduction in soluble glucose due to the breaking of the molecular chain that causes biocomposite to degrade and also affect its mechanical properties [18].
[6] Tutiek Rahayu, Eli Rohaeti, Mechanical properties of bacterial cellulose based coconut water with adding chitosan.
Gibson, Effect of water absorption in the mechanical properties of hybrid interwoven cellulosic fibre reinforced epoxy composites, Composite Structures, 167 (2017) 227–237
Oromiehie, Physical mechanical barrier and thermal properties of polyol plasticized biodegradable edible film made from kefiran, Carbohydrate Polymers, 84 (2011) 477-483

In addition to mechanical loads, aerospace technology is also affected by thermal loads, which can affect not only the mechanical integrity of the satellite, but also the operation of its equipment.
Physical-thermal properties of carbon fabric.
These parameters for the construction of Plain, Twill and Satin weaving structures were the same because carbon fiber properties for different weaving were also the same in our study.
S., Evaluation of forming properties of fabrics from carbon, glass, and organic fibers Polymer Science.
Investigation of the influence of the fabric structure on the kinetics of its impregnation process in the production of carbon fiber parts Physics of fibrous materials, Structure, Properties, High-tech technologies and materials (SMARTEX) - No.5 (2018) 11 – 15

It affects directly machining accuracy and parts quality.
Burrs controlling and deburring technology have become one of the main factors that restricting the development of the precision and ultra-precision machining, flexible manufacturing system and automation machining technology [1].
According to users information compared to members' database, different web pages access authorizations provide for different users by setting the DestinationPageUrl properties of login control which included in ASP.NET 2.0 membership frame
Fig.6 Flow chart of burrs prediction It can be learned from the figure that there are two conditions for given cutting parameters compared to cutting burr data exist in database of the system. 1) for those accord with main influencing factors conditions, system adopts query methods; 2) for those do not accord with main influencing factors conditions, system adopts the reasoning method of BP neural networks [5].
China Mechanical Engineering, Vol. 16(2005), p.1039~1041

New LDPE Copolymeric Films with Enhanced Hydrophilic Properties Prepared by Gamma Irradiation L.M.
Graft copolymerization induced by gamma radiation has being used as a tool to modify the surface properties of a range of polymeric substrates.
Several factors may affect the radiation grafting process, such as the monomer concentration, the presence or absence of air during irradiation and the irradiation dose-rate (DR).
Sample characterization Thermal analysis Thermal properties of non-irradiated and irradiated LDPE film, polyHEMA and LDPE grafted films were evaluated by TGA and DSC.
The hydration degree of a polymeric material influences the surface properties and the diffusion mechanisms through the polymeric support, as well as its mechanical properties [7, 8].

Influences of sintering additives and particle size of TiO2 on the microstructure and mechanical properties of porous TiN ceramics were investigated.
Microstructure and mechanical properties of porous TiN ceramics were studied by XRD, SEM and three-point bending measurement.
Effects of different sintering additives and TiO2 particle size on microstructures and mechanical properties of porous TiN ceramics were investigated.
The influences of different sintering additives and TiO2 particle size on microstructure and mechanical properties were investigated.
Kingery, Effect of porosity on physical properties of sintered alumina.

The chemical composition and mechanical properties of this material are given in Tables 1 and 2.
Mechanical properties Composition [wt. %] Yield Tensile Vickers C Si Mn P S strength strength Hardness Elongation 0.168 0.020 0.810 0.012 0.008 302[MPa] 440[MPa] 214[Hv] 44[%] Title of Publication (to be inserted by the publisher) Specimen and loading device To change the loading mode of single overload and fatigue load, modified compact tension shear (CTS) specimens and loading device [6] were used.
The position that was affected by single overload was shown in Fig. 2.
KI and KII are stress intensity factors of mode I and mode II resulted from changing load mode.
Comparison of relationship between deformation field and fatigue crack behavior In this section we tried to examine the effects of mode combination by comparing observed factors in deformation field and fatigue crack propagation behavior (Fig. 9).