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The titanium is used as porous implants due its excellent mechanical properties and biological interaction.
The topography of the implant is one of the factors that influence the process of bone repair to osseointegrate the implant.
Titanium and its alloys are the main metals studied as porous implants by its excellent mechanical properties, biological interactions and formed passivation layer.
Nakamura, Mechanical properties and osteoconductivity of porous bioactive titanium, Biomaterials 26 (2005) 6014-6023
Li, D.C Dunand, Mechanical properties of directionally freeze-cast titanium foams.

The titanium affinity by oxygen is one of main factors that limit the application of their alloys as structural materials at high temperatures.
Introduction The affinity of titanium for oxygen is one of the main factors that limit the application of titanium alloys as structural materials at high temperatures.
Its creep properties in air have been well documented.
This is known to severely limit the high temperature capability of alloys in terms of their mechanical properties.
Table 1 - Tensile properties of Ti-6Al-4V alloy.

Introduction This paper[2]has put forward a new project type“ steel bridge pavement + reinforcing fabric + shear connector + high toughness lightweight concrete + SMA-13”, as shown in Fig. 1 ,this project by welding shear connectoron a steel plate and colligating reinforcing fabric to improve the slip resistance ability and cooperative shape-shifting ability between toughness lightweight concrete and steel plate,eventuallyimproving the fatigue lifetime and its high and low temperature properties.
of light aggregate concrete (shear rivet) paving project.According to practical situation,contrastand analysis the influence factors such as shear rivet spacing, diameter, height and lightweight concrete pavement thickness.
Comprehensive consideration about the factors recommended shear rivet spacingof 400mm.
(3) Based on this analysis, through considering of construction technology, economic and other factors.
The influence of bridgetype, bridge span and bridge dynamic property also needs further exploration.

After the ultrasound sent into the specimen with subsurface defects, due to the loss effect of mechanical energy or friction at the interface of defects, it weaks and generates heat here[10-12], which leads to heat conduction and varying temperature field on the surface of the specimen.
Its property is shown in table 1.
An crack of 60×3×0.5mm was made through laser cutting, and micro cracks are generated at the crack tip by applying mechanical loads to the plate.
Table 1 Material’s physics properties parameters Density (kg/m3) Specific heat (J/kg·OC) Heat conductivity (W/m·OC) Modulus (GPa) Poisson’s ratio 7850 465 49.8 210 0.3 (a) Q235 plate (b) 50 multiple enlarged view of the microcrack F ig.2 The test specimen and enlarge view of the microcrack Experiment parameters.
So modulation frequency fm is one of the important factors affecting the testing quality.

Introduction Improving mechanical properties of polymer composites is a current challenge for many researchers due to lots of advantages in terms of cost and technological requirements.
There are several factors which determine tribological behavior [15].
Basically, cohesive wear is influenced by the mechanical properties of the materials in contact.
Brostow, Effect of the Type of Carbon Nanotubes on Tribological Properties of Polyamide 6, Polym.
Pakkanen, Influence of Carbon Nanotube–Polymeric Compatibilizer Masterbatches on Morphological, Thermal, Mechanical, and Tribological Properties of Polyethylene, Compos.

Thus, the factors of atmospheric corrosion are complex.
In detail, there are the following factors that affect atmospheric corrosion, i.e., relative humidity, temperature, difference in temperature, acerbity, alkali, salt, corrosive gases, solid grains, and state of metal surface and so on.
And the corrosion processes of multi-factors should be simulated by computers.
Corrosion process relates to combination of materials and their environmental factors.
Institute of Mechanical Engineers, (1986) [2] SUN Yue, HU Jing.

These cracks result in a decrease in the mechanical performances and durability parameters of the material.
The mechanism of ISA is complex depending on various factors.
These factors have been classified into four groups, which are the thermal conditions at early-age, the cement-matrix composites, physical properties of the material (porosity, microcracking and strength, etc.) and the conservation environment.
The solubility of ettringite is affected by the concentration of both alkalis and Ca2+ in the pore fluid.
Damidot, Impact of unrestrained Delayed Ettringite Formation-induced expansion on concrete mechanical properties, Cem.

Corrosion development with service time The corrosion loss of reinforcing bars is an important influential factor on the strength of steel and bond properties between reinforcement and concrete.
Corrosion rate is affected by the concrete properties and the cover thickness [8,9].
The parameters affecting corrosion are described as random variables, and their mean values and coefficient of variation (COV) are shown in Table 1. 105 15 12 8.8 8.9 66 15 Fig. 3.
In summary, both the concrete strength and cover are the main influential factors on the reinforcing bar corrosion.
Incomplete information and tempral and spatial uncertainties of corrosion influential factors are considered.

If concrete is observed at the microscopic level, it can be seen to contain many interfacial transition zones (ITZ), resulting in the weakening of its mechanical properties; as the physical properties of lightweight aggregates (LWA), such as their high absorption, are clearly different from those of normal weight aggregates (NWA), they may lead to variations in the ITZ of lightweight aggregates concrete (LWAC), making its mechanical behavior different from that of normal concrete.This study takes three types of LWA with different rates of absorption as its subjects in order to examine the effects of LWA absorbency on ITZ.
ITZ, Due to the wall effect, concrete bleeding, unidirectional growth of hydration reactants, and other factors, forming properties that differ from those of cement paste.
ITZ, compared with cement paste, is characterized by high porosity and low tensile and adhesive strength, and the thickness, strength, and other factors in ITZ directly affect the properties of concrete; ITZ may therefore be considered the weakest link in the concrete[1-5].
Experimental work This study is primarily focused on investigating the microscopic properties of ITZ in LWAC.
[5] EuroLightCon Document BE96-3942/R2, LWAC Material Properties State-of-the-Art, December. (1998)

Over-heating will lead to the malfunction of the braking system and affect the safety of vehicle.
Some of the crucial factors need to be included in the design of the brake disc such as safety, reliability, weight, durability, stability, cost and performance.
Various combinations of properties can be obtained from metal matrix composites (MMCs).
The objective is to compare their performance in terms of thermal and structural properties using FEA simulation approach.
Table 1 Materials properties of AlSiCGr hybrid MMCs and cast iron.