Search results

The physic-mechanical properties of different types of glass FRP grids were investigated.
Mechanical and physical tests were used to measure the retained properties and to observe the causes of damage and strength reduction.
The geometric and mechanical properties, measured with tensile tests are shown in Table 1.
GFRP specimens showed high mechanical properties, due to a high fiber content.
Abanilla, Design factors, reliability, and durability prediction of wet layup carbon/epoxy used in external strengthening.

This article studied on these factors which influences the surface strength of packing paper.
In the light of these problems, fiber composition and beating process were optimized and physical properties of off-set printing paper were researched.
But its will lead to paper thickness increase because of fibre properties.
[6]　JahanM S, IslamM K, ChowdhuryD AN, eta.l Pulping and papermaking properties ofpati (Typha)[J].
Refining Intensity at Low Consistency-Critical Factors[J].

However, background knowledge of material structure and electrical properties is required to analyze the results.
Finally, simultaneous effect of thermal and mechanical factors was studied running FSP passes in AA1100 with different overlap ratios.
These tests aimed at assessing the combined effect of mechanical and thermal factors and identify the predominance of any of these.
The electrical conductivity reproduces the shape of the nugget and its associated mechanical and thermal affected zones, as well as, the spacemen between nuggets.
The electrical conductivity clearly identifies the different zones, with marked decrease in the heat and thermo-mechanical affected zones (TMAZ) increasing in the nugget.

Durability properties were also verified.
However, risk is associated also with the use of alternative materials, as these raw materials often exhibit divergent chemical composition, which negatively affects their mechanical, physical and chemical properties.
Next determined properties are in Tables 4 - 7.
Tests for mechanical and physical properties of aggregates – Part 2: Methods for the determination of resistance to fragmentation. 
Determination of basic physical-mechanical properties of slag aggregate, Ostrava: VŠB-TUO (2016)

Velocity Gradients and the Evolution of Material Properties in a Narrow Layer Near Surfaces of High Friction in Metal Forming Processes Sergei Alexandrov1,2 a and Yeau-Ren Jeng2,b 1A.Yu.
Plane Strain Extrusion To the best of authors’ knowledge, no systematic experimental study to establish the dependence of the thickness of the layer of intensive plastic deformation on process parameters and material properties has been reported.
It is also of great interest to relate the evolution of material properties in the aforementioned layer and in traditional processes of severe plastic deformation such as the high pressure torsion process [16].
Farris, A new approach for studying mechanical properties of thin surface layers affected by manufacturing processes, Trans.
Shikimaka, An approach to prediction of evolution of material properties in the vicinity of frictional interfaces in metal forming, J.

Results showed that lapping load and rotate speed were the most important factors on the removal rate, grain size played a key role in the removal rate and roughness under the same conditions, profile tolerance of surface shape depends on the flatness.
Sapphire has so excellent optical properties and chemical performance that its surface quality after lapping needed to very high, even to the no damage super-smooth [9] which roughness value should less than 1 nm.
Results are gotten by the way of a single factor.
According to Fig. 2 to fig. 6, load and speed are the main factors affecting on the removal rate, while abrasive size and concentration do smaller to it, but the influences to the surface smoothness are greater than load and speed do.
,Carr G.I.: Optical properties of c-axis oriented super conducting MgB2 films.

In this paper, we investigated the influence mechanism of four cement antifreeze components on the mechanical and durability properties of MPCC under the severe cold environment, focusing on the development law of the performance of MPCC as a rapid repair material for pavements.
Aiming at the feature of imbalance of winter constructability, mechanical properties, and durability of MPCC, this study explores the influence mechanism of antifreeze components on the performance of MPCC from the aspects of fluidity of mortar, slump of concrete, mechanical properties of concrete, and freeze-thaw durability, to seek for the most suitable antifreeze agent and dosage of MPCC for the environment of high altitude and low air temperature.
Effect of Antifreeze Components on Mechanical Properties of MPCC.
Fundamental properties of magnesium phosphate cement mortar for rapid repair of concrete.
Factors that affect the properties of magnesium phosphate cement.

The properties of the basic fuzzy controllers can be improved through compiling S-function and subsystem that automatically corrects the quantizing factors Ke and Kc.
We can quantify the factors e and ec to amend the corresponding decision made by Fuzzy Reasoning through the size of the input signal, the direction and trend of such characteristics etc.
Fuzzy controller quantitative factors Ke and Kec have a greater impact to steady-state properties and dynamic characteristics of the fuzzy system.
MATLAB based Optimization of Fuzzy Control System Design and Simulation: Mechanical Engineering and Automation.
[8] Wei Wei: Intelligent control technology (Mechanical Industry Press, Beijing 2000)

The welding zone consists of different regions with characteristic microstructuralal details such as a weld nugget, a thermo-mechanically-affected zone (TMAZ) and a heat-affected zone (HAZ).
The welding zone is characterized by different regions like a central nugget with a typical onion ring structure, a thermo-mechanically-affected zone (TMAZ), and a heat-affected zone (HAZ)[2].
Table 2 shows the mechanical properties of parent metal and FSW joint.
Fig. 6 shows the relationship between the crack growth rate, da/dN, and the stress intensity factor (SIF) range, ∆K.
Base metal FSW joint 0.2% offset yield point [MPa] 220 125 Tensile strength [MPa] 300 265 Elongation [%] 8 18 Table 2 Mechanical properties of AA5454.

There is a growing interest in the application of ceramic as high wear resistance materials due to the unique properties.
The tribological properties of alumina and ceramic composites may be affected by their hardness, brittleness, thermal conductivity and chemical inertness [2].
One of the difficulties in examine the alumina wear data is that frequently the above mentioned test conditions factors are not described or even kept under control.
Following it will be discussed the pin-on-disc test conditions factors affecting the results of wear rate measurements and worn surface characteristics of dense alumina.
Wear properties of alumina and effect of test conditions Alumina wear behavior has been extensively studied [1-20].