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Subsequently, the United States, Japan are carried out basic research in the mechanical properties and enhance principle of the ECC materials, and ECC materials used in practical engineering [6].
Through the uniaxial tensile test, Jun Zhang of Tsinghua University studied the PVA fiber diameter on the tensile properties of ECC [7].
According to the results of data analysis, we know that the fiber content is the main factor affecting the flexural strength.
Water binder ratio is one of the most important factors.
(3) Water binder ratio is the most important factor affecting the size effect.

The influence of superplastificators on polycarboxylates basis upon forming concrete mechanical and physical properties was estimated under heat curing.
However, simultaneously with concrete strength development heat curing may cause destruction, making worse the most important physical and mechanical concrete properties.
To solve such a problem it’s necessary to investigate the influence of the main technological factors on concrete properties during heat curing.
One of the factors is chemical admixtures presence in concrete, they influence mixtures and concrete properties. 1.1 Experience in usage of heat treatment for accelerated hardening of concrete with superplasticizers based on polycarboxylates During the last twenty five years revolution in the world construction business has been taking place.
Fominych, Study of Parameters Affecting the Efficiency of Heat Treatment of Self-Compacting Concrete with Mineral Additives, Inzhenernyi Vestnik Dona. 4 (2018).

Introduction Composites hygrothermalageing is a significant phenomenon that concerns several industrial products and consumer goods made from such materials.Due to which the mechanical properties of polymers and their composites affect at a microscopic level[1].Experiments have revealed that plasticization and hydrolysis were the two main causes of degradation of polymeric composites during hygrothermal aging process[2].
Factors responsible for this phenomena are, plastic deformation at higher temperature, and internal stresschange(rise) atfiber/matrix interface due to different coefficient of thermal expansion resulting in interfacial debonding [9, 15].Moreover, hygrothermal exposure causes matrix plasticisation, micro-cracking, voids, and interfacial debonding.
From this research it is evident that mechanical characterisation of the epoxy resin confirms that mechanical properties in general are affected by water sorption/desorption.
The overall reductions in mechanical properties are mainly attributed to the matrix plasticisation, micro-cracking, voids and interfacial debonding of the epoxy matrix due to water absorption.Water absorption reaches equilibrium when all the micro voids are filled.
Composites: Part A 43 (2012) 1053–1060 [2]I, Ghorbel and D, Valentin:Hydrothermal Effects on the Physico-Chemical Properties of Pure and Glass Fiber Reinforced Polyester and Vinylester Resins.

Growing industrial sector is putting focus the composite materials which give better mechanical properties than the materials being used for many years.
Tamer Ozben investigated the mechanical properties and the effects of machining parameters on tool wear and surface roughness of silicon carbide particulate (SiC) reinforced aluminum MMC for different volume fraction.
It was observed that the increase in reinforcement addition produced better mechanical properties such as impact toughness and hardness.
From the analysis, it can be concluded that depth of cut (rank 1) followed by cutting speed (rank 2) and feed rate (rank 3), are significantly affecting MRR.
Investigation of mechanical and machinability properties of SiC particle reinforced Al-MMC.

The weld metal had similar mechanical properties to base metal.
Thus, it concluded that the soundness of the narrow gap welding of a thick-walled 9Cr-1Mo-1W steel was confirmed in terms of the welding uniformity through the depth and mechanical properties.
In this paper, the NGW technique using a thick-walled 9Cr-1Mo-1W steel is evaluated in points of metallurgical soundness, uniformity through welding depth and mechanical properties.
The narrow gap welding technology was applied to join the thick-walled 9Cr-1Mo-1W steel, and evaluated the welding soundness in terms of homogeneity through welding depth and mechanical properties.
The weld metal had similar mechanical properties to base metal, though the ductile-brittle transition temperature of weld metal was near room temperature.

The gas flow rate and the power of the beam seem to have a major role on the mechanical properties and geometry of the weld.
The mechanical properties of the welds were determined by means of micro-tensile to be compared with those of the parent material.
The tensile mechanical properties in different directions in the plane RD-LT have been determined for the base metal (Table 3).
No anisotropy of mechanical properties for the two sheets metal is demonstrated confirming previous microstructural observations.
Mechanical properties of Hastelloy X.

Friction and wear of the guideway is an important factor which affects its precision, the parameter which affects friction and wear performance is no single.
So improving the precision of the guideway has a critical effect to the requirement of the machine tool precision[1].There are a lot of factors which impact guideway precision and its retaining ability, Li Guo-wei[2] has studied the influence of different structure shapes of the guideway to theirs precision.
But these studies which analyzed the influence factors to guideway precision were mainly from macroscopic, have not been able to explain the influence that the guideway itself to its precision radically.
In fact, the geometrical topography is the basement to study contact models and friction problems, which has big influences on the contact properties of the joint surface and the state of friction and wear in the process of contacting.
To study the contact properties of the joint surface is to study the contact properties of the rigid smooth plane and the rough surface.

This study investigates the effect of powder processing on powder flowability, compact ability, and the heat treatment of the resulting coatings on the mechanical properties of cold gas dynamic sprayed Ti-6Al-4V alloy.
Thus, the aim of this study is to investigate whether as-sprayed Ti-6Al-4V coatings using nitrogen as propellant gas can be improved in terms of microstructure and/or mechanical properties via powder processing before coating deposition and/or coating post-heat treatment.
Results and Discussion Feedstock Powder Size, Morphology, and Mechanical Properties.
Yue, Influence of He and N2 Gases on the Properties of Cold Gas Dynamic Sprayed Pure Titanium Coatings, J.
[6] ASM Handbook Volume 2: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, 10 ed., ASM Handbook, Vol. 2, ASM International, 1990, p 1328

Such factors are overlap length, overlap width, added pressure and surface treatment.
The optimum condition determined for experimental factors can improve the bonding technique and design a high strength.
Table 1 shows chemical composition and mechanical properties of AA7075-T735.
The mechanical properties of the adhesive in tension were measured using tensile specimens.
Table 2 shows the mechanical properties of the adhesive measured tensile specimens.

The unique hydrogels properties, such as porosity, and biological and mechanical properties, make them suitable for a wide range of applications, especially in the medical sector.
Bioinks should provide required properties: right biocompatibility, printability, fast cross-linking time, printing fidelity, stability and suitable mechanical properties (such as strength and elasticity).
Swelling properties.
Shrinkage properties.
Shrinkage properties.