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To determine the physical properties of the fine aggregates it was carried out absorption and specific weight tests.
Two shape factors were measured: Feret ratio (F-ratio) and circular shape factor (F-Circle), as defined as shown in Fig. 1.
Definitions of the shape factors quantifying the elongation and roundness of the particles.
For natural mortar (MOR) there is an increment of these properties with time.
Rheological and mechanical properties of mortars prepared with natural and manufactured sands, Cement and Concrete Research. 38 (2008) 1142-1147

Introduction The corrosion of steel rebar is one of the main factors for reinforced concrete properties of structure degradation, which make the section area of the steel reduced, properties of mechanical degraded, the bonding between reinforcement steel rebar and concrete degraded.
Corrosion rate was affected by the thicken layer and corrosion potential dropped with the corrosion increased.
Thorough experiment factors to improve the calculation method.
Experimental research of mechanical performance of corroded reinforcement[J].
Controlling factor of macro-cell corrosion rate of reinforcement in concrete with high proportion of chloride.

The proportion of MTA powder and water is a common factor impacted on the properties of the material in clinical application.
Water-to-powder ratio is one of the main factors influencing the properties of MTA.
The proportion of MTA powder and sterile water is one of the main factors commonly impact on the properties of the material.
Kheirieh, The properties of a new endodontic material, J.
Yap, Comparison of the physical and mechanical properties of MTA and portland cement, J.

Conversely, concrete properties vary considerably because of the influence of many internal and external factors involved in the production.
Environmental factors such as temperature and moisture have a great influence on concrete strength.
It greatly affects the hardened state properties [9] and can be expressed in terms of workability.
This also affects the hardened concrete properties [9].
M Neville, Properties of concrete.

To see the change of characteristic of material and physical shape factor the chemical composition factor that the portion of B2O3 in the glass composition is changed.
Relationship between laser factor and material factor.
Heat treatment and glass properties.
The property change of ND cr and field strength of positive ion when B2O3 increases Table 2.
Conclusions The chemical and characteristic factor of glass was affected by composition change.

Introduction Copper nanowires (NWs) have attracted great attention within the nanotechnology community because of its intrinsic low-cost and extraordinary physical/chemical properties.
For example, solar cells, flexible/stretchable electrodes, nanosensors, lithium-ion batteries, and nanocapacitors have been demonstrated with NWs of Cu or related composites.[1] Mechanical properties of Cu NWs, including plasticity and failure, are of critical relevance to the design and reliability of these devices.
A conceptual framework of "dislocation starvation" was proposed to be responsible for this apparent size-dependent behavior.[2] The nanometer dimensionality, however, is not the only factor that may affect deformation mechanisms and ultimate mechanical performances of NWs.
Until recently, as five-fold twinning was frequently observed in metallic NWs (e.g. platinum, gold, silver, and copper), extensive molecular dynamics (MD) simulations and initial experimental demonstrations have shown that such NWs may offer great potential of preserving ductility along with high strength.[6] However, so far there has been no clear experimental demonstration/confirmation to clarify the correlation between fivefold twinned (FT) microstructure and mechanical properties in Cu NWs.
This further verifies that microstructure control is a particularly effective mean for optimizing mechanical properties in NWs.

There are many parts in aerospace fixing device, the 7075 - t351 brand aluminum alloy is a commonly used material of these parts[2].The material has high strength, good toughness, wear resistance and resistance to spalling corrosion resistance and other characteristics; After the machining deformation, comprehensive mechanical processing performance is good[1].
Figure 1 Part drawing Figure 2 Parts attributes figure Figure 3 Blank properties Figure 4 Layout The reason analysis.
Can be seen from the above analysis, the blank size in addition to the component itself size cannot be changed, cutter diameter and lugs is also one of the factors that affect the blank size.
Mechanical engineering press, 2012.

Obtaining the metallic materials route metallurgy powder, the sintering process is preponderant in the final properties of material.
The experimental methodology of Taguchi bases on three variables types that affect every process and in consequence the variable answer, being them: (1) control factors, (2) sign factors; that can be controlled by operator and they affect the medium value of the answer and (3) factors of noises, that not controlled (environmental) and that affect the variable answer [1].
Table 1 - Factors and levels.
Factors Q.A.F F.D.
Factors Q.A.F F.D.

Thus, rock mechanical properties change attributed to the formation temperature and overburdened pressure as the rock deepens in the well.
Coupled formation temperature and overburden pressure lead to great alteration of rock mechanical properties in deep formation [6].
The main rock mechanical characteristic parameters affecting the rock penetration of bit are compressive strength, shear strength, elasticity modulus, Poisson’s ratio, internal cohesion and internal friction angle.
It reflects the influence of other factors on ROP.
In case of broken teeth, the performance is affected.

Obviously, bonding force directly affected the last bonding strength.
High temperature setting may result in over-bonding because of it affects physical and chemical properties of bonding materials and destructs formation of bonding surface.
Fig 3 Placement of overlooking the camera perpendicular to the direction of motion of capillary Fig 4 Calibration version of image Many factors affect bonding quality.
Chinese Journal of Mechanical Engineering, VOL. 43, NO.3, (2007), pp.107-111
[7] Long Zhili, Han Lei and Wu Yunxin: Study of the Effect of Temperature Factor on Thermosonic Bonding Strength.