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Rating of the probabilistic component of fire risk material is quite complicated, since the probability of fire depends not only on the material properties, but there is a significant impact of human factors (similar ideas are presented in a scientific paper [5]).
Presented article will deal only with selected fire properties of the material which have impact on the likelihood of fire, without research the impact of the human factor.
For completeness it should be added that the comprehensive assessment of fire risk of certain materials (e.g. construction materials with static or fire separating function) is necessary to know the change of mechanical properties during fire.
In the case of wood and wood based materials their mechanical properties during a fire depend on the carbonization rate.
According to [19-20] is an important factor affecting the thermal resistance of wood and wood materials the density of materials.

The research results show that the normal grinding force is the primary factor responsible for the generation of residual stress in grinding ceramic.
The mechanical effect of the grains is to affect the magnitude, the depth of penetration and the gradient of the residual stresses.
Introduction In modern manufacturing, interest in advanced ceramics has increased significantly in recent years due to their unique physical characteristics in their mechanical properties and reliability.
The advantages of ceramics include: a higher hardness and strength, retention of these properties at high temperatures, a low density, a low thermal expansion coefficient, chemical stability, a superior wear resistance and good self-lubrication properties.
The ground material was Silicon nitride (Si3N4) and the properties are shown in Table 2.

Furthermore, a statistical analysis of variance (ANOVA) is performed to find significant factors.
The most important stage in this method lies in the selection of control factors.
The total degree of freedom (DOF) for four factors each at three levels is 8.
Following are the simulation properties used as given in Table 4.
Flash thickness, billet temperature and friction coefficient observed as the most significant parameters affecting the response.

Information pertaining to the geometry of the bridge and the mechanical properties of the materials used for construction were obtained from “as-built” engineering drawings from the Roads Authority (RA) of Namibia, physical measurements and non-destructive testing in situ.
Bridge failures predominantly result from excessive loads, ageing, exposure to aggressive environments, construction defects and other factors [5 - 7].
The physical and mechanical properties of concrete, steel and structural elements of bridge B0140 were obtained from “as-built” engineering drawings and unpublished technical reports from the Roads Authority (RA) and validated by physical measurements and non-destructive testing in situ.
A summary of the geometric and material properties of bridge B0140 is presented in Table 1.
Bridge Geometric and Material Properties Geometric properties Bridge length [m] 61.7 Bridge width [m] 24.0 Bridge height [m] 1.8 Bridge deck thickness [mm] 250.0 Pier thickness (minor support) [mm] 260.0 Pier thickness (major support) [mm] 580.0 Pedestrian sidewalk [m] 1.2 Material Properties Compressive strength of concrete [MPa] 40 Cover [mm] 40 Yield stress of steel [MPa] 460 Loads.

Figure 3 Laser welding process and welded samples Effect of parameters on weld strength Optical properties of transmitting part.
In this section, the optical properties of the PC materials are investigated; the transmission measurement results are summarized in Table 1.
Figure 5 Welding 20~30mm/s, laser power 40W, slight degradation of the weld joint occur In figure (6) the results indicate that the welding speed is the most important factor affecting the welded zone width.
The main factor influencing the width of HAZ is the welding speed as the results indicated.
Benatar, Diode laser characterization and measurement of optical properties of polycarbonate and high-density polyethylene, ANTEC 2003, pp1056-10601990.

Che, Improving mechanical properties of dissimilar material friction welds, Appl.
Muthukumaran, Influence of water cooling and post-weld ageing on mechanical and microstructural properties of the friction-stir welded 6061 aluminium alloy joints.
Sivaprasad, Evaluation of microstructures and mechanical properties of dissimilar materials by friction welding, Procedia.
Shi, Empirical modeling for the effects of welding factors on tensile properties of bobbin tool friction-stir-welded 2219-T87 aluminum alloy.
Kantumuchu, Dissimilar friction welding of AISI 304 austenitic stainless steel and AISI D3 tool steel: Mechanical properties and microstructural characterization.

The presence of these pores creates stress raisers which can lower the mechanical properties of the composite, and is therefore undesirable.
Transformation Volume Change (%) β-quartz  α-quartz 0.82 - 1.3 Α-quartz  α-tridymite 14.4 - 16.0 α-quartz  α-cristobalite 15.4 - 17.4 γ-tridymite  α-tridymite 0.4 - 0.5 β-cristobalite  α-cristobalite 2.0 - 2.8 Factors Affecting the Crystallization Rate of Fused Silica.
Carbon-carbon composites have superior mechanical properties and are able to retain these even at elevated temperatures of up to 3000oC.
Hench: Physical Chemical Factors in Sol--Gel Processing.
[132] Crivelli-Visconti, I., Cooper, G.A., Mechanical Properties of a New Carbon Fibre Material, Nature, 1969, 221(5182): p. 754-755

Metal foams have both structural and functional properties, offer advantages in different fields such as automotive and aircraft etc., and thus gain more and more technical interest.
Mathematical modelling of the different relevant physical properties and effects during the metal foam expansion and solidification is discussed in this paper.
Introduction Metallic foams can provide an engineering material with the advantageous mechanical properties for a relative low weight.
Therefore, it is significantly important to understand the foam solidification process and to learn the main factors affecting the cell size and its distribution.
In this method, microscopic fluid physics is simplified to retain key factors such as local conservation laws and symmetries needed to guarantee accurate macroscopic behavior.

Ceramic particles show larger mechanical properties to unreinforced Al as matrix.
RHA addition results in healthier mechanical properties [5,6].
It is found that when developing Al- RHA (3,6 & 9 wt. %) MMC with 1% Mg as wetting agent by stir casting, its improves mechanical properties.
Srinivasa Rao, Effect of Rice Husk ash and Fly ash Reinforcements on Microstructure and Mechanical properties of Aluminium alloy (AlSi10Mg) Matrix Composites, Int.
Krishna, Production and Mechanical Properties of A356.2 /RHA Composites, Int.

Ti-6Al-4V and stainless steel 304L rods are fixed in the friction welding machine and prepared the joints by variable factors (Table 2).Most of the joints are failure (90%) and some joints passed in drop test (10%).
Satyanarayana, Influence Of Welding Processes on Microstructure and Mechanical Properties of Dissimilar Austenitic-Ferritic Stainless Steel Welds.
Sathiya , Evaluation of Mechanical and Metallurgical Properties of Dissimilar Materials by Friction Welding.Procedia Engineering 2013, 64,1514
Ma ,Effect of ball-milling time on Mechanical properties of carbon nanotubes reinforced aluminum matrix composites.
Saatchi, T.H.North ,Influence of Ni Interlayer on the Mechanical Properties of Ti6Al4V/ (WC-Co) Friction Weld.