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The glued laminated timber (glulam) mechanical properties may be evaluated through the determination of the key mechanical properties of the lamellae that compose that element.
Even with a controlled manufacturing system and machine stress grading, defects must be assessed by visual inspection specially in the section near the loaded areas, since growth defects factors may have a more substantial effect in the failure development than strength factors such as modulus of elasticity (MOE) and modulus of rupture (MOR) [1].
The mechanical properties of glulam elements are correlated with the properties of the composing lamellae in order to obtain the strength class of the material.
Table 1: Characteristic values of the mechanical properties [MPa] and density [kg/m3] for homogeneous glulam elements [5].
Properties correlation functions were used to obtain the mechanical properties of the glulam elements regarding the properties of the composing lamellae.

The influent factors on hydrophilic properties and UV curing speed of the resin were discussed, and the modified resin has compared with that of unmodified resin.
However, comparing with the traditional oil UV-curing coatings [4], waterborne UV-curing coating has many limitations, such as low UV-curable speed, poor water resistance and low mechanical properties, which limited its development.
affect the hydrophilism of the WPUA resin.
The effects of hyperbranched polyester content on the properties of WPUA film is shown in Table 2.
During the curing of the film a dense network structure was formed and polymer chains were cored to hyperbranched polyester, so the mechanical properties of film were greatly improved.

Through the result of the test, we analysis the factors affecting the shear resistance of asphalt mixture such as modification agent,confining pressure, gradation type and also get the mechanical properties of the asphalt mixture in the triaxial stress state.
The road materials are updated constantly, rubber powder modified asphalt mixture can not only improve the engineering properties of the pavement but also is greatly beneficial from the point of view of energy saving, environmental protection and development of circular economy.
The mechanical strength is mainly composed of aggregate particles of the friction among mineral aggregate particles and bond between asphalt and mineral aggregate [1].
The properties of material and the gradation of aggregate Materials.

Effect of Etching Time on Electrical and Optical Properties of Porous Silicon S.F.M.
The samples ware prepared under various etching time and properties of porous silicon depend on an etching time.
The samples of porous silicon were characterized by using Photoluminescence Spectroscopy (PL) that used to characterize optical properties while I-V Measurement (I-V) used to characterize porous silicon junction properties using a linear voltage source.
Of particular relevance to our research are the biomedical and sensor properties of the material.
The intensity of PL influenced the factors such as porosity, thickness of the porous layers and surface morphology.

The tensile strength properties of GFRP bar is its application advantage.
In order to obtain the mechanical properties of the composite, the microscopic and macroscopic levels analysis is necessary.
The microscopic mechanics determined the mechanical properties of the composite through the composition of material and interrelation.
The macroscopic mechanics employ the overall mechanical properties under the assumption of homogeneous anisotropic material, without absolutely distinguish the constituent.
Macroscopic property testing and microscopic mechanics analysis reflect the tensile properties of the material from different angles, and then obtain the mechanism of tensile strength[2].

The chemical corrosion properties of PSCF in different pH values were test in microscale, and digital imaging processing technology was adopted to analyzing quantitatively the physical and mechanical properties, including particle area, pores connectivity rate and compressive strength, before and after PSCF were corroded.
The change of PSCF microstructure has significant effect on its macromechanics properties.
The interaction between mineral composition of PSCF and hydrochemistry solution was the basic factors determining straw structural characteristics, and the physical and mechanical properties of PSCF were affected by its structural characteristics.
And deformation properties of PSCF changed correspondingly with the change of PSCF structure shape.
Change Analysis of Fiber Mechanical Properties under Corrosive Action.

The relative mechanical properties of UPR-mortar and substrate concrete for composing the specimens are: lower modular and high strength ratio.
The bond strength is influenced by various factors.
The distribution of these stresses on the interface depends on the relative mechanical properties between these two materials.
It has been suggested by previous investigator [7] that mechanical properties of the two materials composing specimens for measuring slant shear will affect the result.
In this research, mechanical properties of UPR-mortar are summarized in Table 2.

The effects of amount of wood fiber on mechanical properties, brittleness, flame-retardant, insulation and microscopic structures of wood fiber-MUF foam were investigated.
Results indicated that the flame-retardant properties increased, and the brittleness and mechanical properties decreased with the increase of the amount of wood fiber in composite foams.
Properties Methods.
Table 1 showed the relationship between amount of wood fiber and the mechanical properties of the foams.
Table 1 Mechanical properties of the foams Content of wood fiber (wt.%) 0 5 10 15 20 Compression properties (MPa) 0.5234 0.5343 0.3865 0.3150 0.2450 Bending properties (MPa) 0.6395 0.6848 0.4848 0.4770 0.3800 Fragile Properties.

These factors about scaffolds can affect regeneration rate and proliferation rate significantly depending on fabrication condition.
The mechanical properties were tested by Instron.
Therefore, the optimization of fiber thickness by controlling the gel concentration is a very important step because it affects the pore and mechanical properties of the scaffold.
Analysis on mechanical properties.
As a result, gel-spun scaffolds have good tissue in-growth ability and strong mechanical properties.

It also creates a basis for constitutive models for porous materials whose time-dependent properties, such as shrinkage, creep, strength etc., are strongly affected by the moisture and temperature fields.
Mechanical Properties and Frost Resistance Young’s modulus was measured by the ultrasonic pulse method using the travel time of ultrasonic wave passing through the material.
On the basis of data given in Table 3, one can assume that the dominant influence on materials structure formation had the physical factors, especially the sedimentation pressures.
Mechanical properties are summarized in Table 6.
The effect of porosity on the mechanical properties of the analyzed sandstones was apparent but the mineralogical composition played an important role as well.