Search results

The mechanical properties of the films were measured on a universal testing machine, and the dissolution rate of SF was examined by ultraviolet spectroscopy.
Nevertheless, the addition of glycerol has a direct influence on mechanical properties and water solubility of the films.
In order to obtain the best addition amount of glycerol to prepare SF/ PP blend films with ideal mechanical properties and water insolubility, the effects of addition amount of glycerol on the properties of the blend films were investigated as a reference for further research on this blend film.
Mensuration of mechanical properties of films.
Mechanical properties of films.

All of the different fibers used in composites have different properties and so affect the properties of the composite in different ways. 2.2 What is a composite?
In the studies on mechanical performance and properties of short fiber reinforced polymer composites [7] have shown that both fiber length distribution and fiber orientation distribution play very important role in determining the mechanical properties [11] ,who believed that mechanical properties of the natural fiber composites depend on several factors such as the stress strain behaviors of fiber and matrix phases, the phase volume fractions and the distribution and orientation of the fiber or fillers relative to one another.
The mechanical properties of coir fibers are shown in Table3.
The mechanical properties of polyester resin are given in table4.
Table4: Mechanical properties of polyester resin [9].

Experimental In the formation of coatings are of great importance rheological properties of liquid paints.
At the stage of preliminary experiments to determine the nature of the dependence of the output parameter on individual control factors, a classical experiment was used.
The natural values of the control factors and the ranges of their variation are presented in table 1.
During the filling of paint pigments the main qualitative properties of the obtained coating composition is hiding power of paint [6].
The improvement of the coating properties is due to the fact that when the pigment filling volume of the film-forming agent increases, the number of leafing layers of particles in the coating increases, which have the property of reinforcing the coating, improving its strength and operational properties.

The mechanical properties of natural fibers are dependent on the cellulose content.
Physical and mechanical properties of composite boards from plant waste are given in Table 2.
Physical and mechanical properties * and thermal conductivity composites of plant particles.
Variable in the experiment factors and their levels are presented in Table 3.
The ranges, levels and intervals of variation of factors.

Introduction The wear process is characterised and affected by a series of parameters: geometry of surface peaks (roughness, buckles, form deviation, ect.), condition of physical mechanical upper layer, component material, wear temperature, and wear conditions, etc.
Already initially there is a problem that all these factors affecting the fittings’ wear process cannot be taken into consideration in the analytical calculation and therefore the wear calculation development in the course of time went into different directions.
Each this direction made theoretical calculations assessing sets of affecting quantities.
Irregular surface roughness schematic depiction (a) and corresponding standardized correlation function (b) In view of the above an irregular character friction surface model can be defined: surface roughness is described by a normal uniform two variable x and y random field h(x, y), possessing ergodic properties and whose correlation function is uninterrupted and has uninterrupted derivatives.
Possible separation of wear particles from surface peak Thus h0 depends on the situation of upper layer and other physical and mechanical factors determining particle formation during friction process.

Mihai Viteazu No. 30, Timişoara, Romania atatiana.georgescu@upit.ro, beduard.nitu@upit.ro, cmonica.iordache@upit.ro, dlbotila@isim.ro Keywords: FSSW, Steel Structures, Process parameters, Mechanical properties Abstract.
Thus, this study analyses the types of steel and joined structures, the process parameters used in experimental research, and the mechanical properties of FSSW joined steel structures.
Mechanical Properties of FSSW Jointed Structures Among the quality indicators of a welded joint are its mechanical properties, so researchers use tensile tests, flexural tests, and hardness measurements at points in the weld zone as characterization methods.
Leitao, Influence of base material plastic properties and process parameters on friction stir weldability, Dissertation for the degree of Doctor of Philosophy in Mechanical Engineering, University of Coimbra, 2013
Khudhair, Optimization of mechanical properties of Friction Stir Spot Welded joints for dissimilar aluminum alloys (AA2024-T3 and AA 5754-H114), Arab J Sci Eng 41 (2016) 4563–4572

There are many factors affecting the fire safety of entertainment places, which can be divided into four categories: building property, fire control facilities, fire safety management and personnel factors[3,4].
The factors of building property mainly include the fire resistance rating, fire zoning, and the evacuation passageway design, etc.
Fire prevention design is carried on in the design stage, the main influencing factors of fire risk are building property and fire control facilities.
(4) In the formula, Zi refers to the fire brigade’s ability to control risk, Li refers to distance factor affecting the fire brigade’s ability to control risk, τi refers to building height factor affecting the fire brigade’s ability to control risk, γ refers to external fire control facilities factor affecting the fire brigade’s ability to control risk, D refers to building’s ability to control risk.
Safety system engineering[M].Beijing: Mechanical industry press,2007:96-154.

Besides the operational environment, the manufacturing process, especially surface treatment techniques, plays a crucial role in affecting the fatigue life of titanium alloy fasteners.
Factors No.
Effect of Delayed Quenching on the Microstructure and Properties of TC4 Titanium Alloy for Aerospace Fasteners, J.
“Residual stress, fatigue behavior, and mechanical properties of equal-channel angular pressed commercial pure titanium”, Journal of Materials Research and Technology, Vol. 28, pp. 3, 297-3, 305, 2024.
“Factors Influencing Residual Stresses in Cold Expansion and Their Effects on Fatigue Life－A Review”, Coatings, Vol. 13, No. 12, 2023.

This is obviously the reason for the increase in the physical and mechanical properties of the modified layer, namely, an increase in the microhardness index, corrosion resistance, wear resistance, etc.
The physical and mechanical properties of the modified material by the depth of the heat-affected zone (HAZ) also exceed these indicators in comparison with the first processing mode.
This parameter determines the causal relationship between structural phase transformations in the modified layer and changes in its physical and mechanical properties.
It depends on the wear conditions, physical-and-mechanical and tribological properties of the mating materials.
These circumstances largely explain the mechanism and the main factors determining the increase in tribological properties during laser thermal strengthening, namely, due to an increase in cohesive strength, bearing capacity and improved wear conditions of the modified layer.

Physical and mechanical properties of the obtained compacts are determined.
Another significant advantage achieved by applying the technology is the possibility for manufacturing fine-grained structure ceramic products with high mechanical properties.
Conventional static compaction methods allow obtaining compacts with the density of 40…50 %, which negatively affects the physical and mechanical properties of ceramics.
The objective of the investigation was to develop the technology of magnetic pulse compaction as well as to study the physical and mechanical properties of the obtained compacts and ceramics. 2.
According to the results in Table 3, the technology of magnetic pulse compaction definitely affects the final properties and structure of the ceramics.