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The results show that the porosity of composite materials made a detrimental effect on the mechanical properties.
Affected by factors such as manufacturing technique and bonding process, wind turbine blades will inevitably lead to voids, lack of resin and delamination [2, 3].
Voids will have a detrimental effect on many properties of the material, even if the content is small [4, 5].
The effect of the porosity on the mechanical properties of the composite specimens is obtained.
Ghiorse, Effect of Void content on the mechanical properties of carbon/epoxy laminates, SAMPE Q. 24 (1993) 54–59

The results show that there are several factors affect elastic modulus of the composite, including the adding proportion, elastic modulus, shape, size and tilt angle of the particles, etc.
During recent years, one of the research hotspots in this area was to investigate the influencing factors of the mechanical properties and their strengthening and toughening mechanisms.
Many researchers have established Axisymmetric single-cell model [3,6] , ellipsoid single-cell model considering the interaction between particles [7], randomly distributed spherical particles model [8] and serial sectioning method [9,10], etc, which simulated the tensile and fracture behavior of particle-reinforced metal matrix composites and analyzed the influence of certain factors including adding proportion, shape, size of reinforcement on mechanical properties of the composite.
Currently, the correlational research on the effect of attribute features, especially the elastic modulus of particle reinforcement on the mechanical properties is very lacking.
The effects of adding proportion, size and shape of the particles on the mechanical properties of the composites also need systematic research.

Nanoindentation has been applied to investigate the mechanical properties of bone tissues.
The mechanical properties of bone tissues were investigated at the microscopic scale in terms of patient age and the correlation between bone mineral density and the mechanical properties were addressed in this paper.
It is worth nothing that a number of factors may affect the measurement accuracy of mechanical properties via nanoindentation.
Hydration is one of the critical factors.
Future studies are needed to clarify the roles played by these factors.

By improving and optimizing the welding technology of heavy and heavy parts of low alloy high strength steel, we can effectively avoid the cold crack and overheating of heat affected zone in the welding of heavy and heavy parts of low alloy high strength steel, and greatly improve the mechanical properties of welded joints.
Introduction Because low alloy high strength steel has high strength, good weldability and excellent comprehensive mechanical properties.
Low-alloy and high-tempered high strength steels usually obtain better mechanical properties by quenching and tempering [2].
These temperature parameters will have an important impact on the mechanical properties and crack resistance of joints .
In this way, the cooling rate of each weld is higher, and the secondary weld has heating effect on the front weld, resulting in tempering effect, which refines the structure of the weld metal and heat affected zone, and improves the mechanical properties of the weld.

Thermal Simulation on Mechanical Properties of Steel Q345for Continuous Casting Slab∗∗∗∗ D.F.
Introduction The quality of Continuous Casting slab is one of factors which influence the quality of steel [1-3].
The factors of continuous casting process can influence the quality of Continuous Casting slab.
Mechanical properties are the characteristic response of a material to applied forces.
At present, a few mechanical properties of Steel are public for rolled metals, but they are not system.

Because of the coating binder migration in cross-section of coating layer, the binder concentration will be different in z-direction of coating layer, which affect some properties of coated paper.
The Paper studied the effects of pigment type, coating color solid content and dying temperature on binder migration and affected factors.
Introduction The final result of coating binder migration in coated paper influences the structure and surface state, affects the coating operation and the properties of the coated paper.
Numerous and related factors affect binder migration, such as coating process, coating color formulation, base paper properties, coating method, drying way and drying speed, binder types, pigments type and pigment particle size and so on, therefore so far it is difficult to find a migration rate or concentration distribution theory equation or empirical formula to describe the binder migration accurately.
Pigments type affected the coating binder migration.

The study of the mechanical properties of BFRPC materials should be studied furtherly. 2.
Experimental Study on Mechanical Properties of BFRPC Materials 2.1.
The mechanical properties of BFRPC must be related to the internal microstructure of materials, in addition to the mechanical properties of fiber and concrete materials.
And the microstructural defects would be increased in BFRPC, the mechanical properties would be affected. 4.
Experiment and research on basic mechanical properties of reactive powder concrete [D].

The mechanical property of external prestressed beams is affected by many parameters.
Parameters Effection Analysis on Mechanical Property Effect of the Effective Prestress.
For the two factors of area and effective prestress, the later has more obvious influence on ultimate stress increase.
A finite element analysis on parameters affecting the mechanical property of external prestressed beams is done.
For the two factors of tendon area and effective prestress, the later will has more obvious influence on ultimate stress increase.

Effect of Welding Speed on Mechanical Properties of Friction Stir Welded AA 6082-T6 Al Alloy Dhananjayulu Avula1,a*, D.K.
The welding speed depends on several factors, such as alloy type, rotational speed, transverse speed, depth of penetration, and joint type [6].
In the present study the mechanical properties and micro structural aspects with various welding speeds have been investigated.
Tensile properties.
Tensile properties of friction stir welds.

This study aims to evaluate the influence of solvent acids and glycerol as plasticizer on the antimicrobial and physical properties of chitosan films.
Concerning mechanical properties, chitosan film prepared with acetic acid exhibited the highest tensile strength and the lowest percentage elongation.
The main goal was to produce chitosan films with a good antimicrobial properties, lower water vapour transmission rate, and good elasticity.
Study of the combined effect of both clay and glycerol plasticizer on the properties of chitosan films.
In vitro antibacterial and antioxidant properties of chitosan edible films incorporated with Thymus moroderi or Thymus piperella essential oils.