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Introduction The grain refinement of cast components is associated with an improvement in the in-service properties and the promotion of a more homogeneous microstructure.
As with other metallic engineering alloys, a refinement in prior-β grain size in cast titanium alloys is believed to improve a number of properties including strength, ductility and fatigue resistance [1] as well offer a number of other benefits [2, 3].
[2] Yu, J., Zhao, Z.J., and Li, L.X. (1993) Corrosion fatigue resistances of surgical implant stainless steels and titanium alloy, Corrosion Science 35, 587 - 597. [3] Early, P.W. & Burns, S.J. (1977) Improved toughness from prior beta grains in Ti-6Al-4V, Scripta Metallurgica 11, 867-869 [4] Zhu, J., et al. (2001) Effect of silicon additions on microstructure and mechanical properties of cast titanium alloys, Materials Transactions 42, 336 - 341
[6] Whitsett, C.R., et al. (1977) Influence of rare-earth additions on properties of titanium alloys microstructures and room-temperature tensile properties of Ti-6Al-4V with Yttrium, Erbium and Mischmetal additions, McDonnell Douglas Research Labs
[8] Zhu, J., et al. (2003) Influence of boron addition on microstructure and mechanical properties of dental cast titanium alloys, Materials Science & Engineering A339, 53 - 62

Several factors impair adherence, including loss of tensile adhesion strength and plate expansion due to moisture. 
It is commonly observed that after a few years of use the plates begin to loosen, thereby endangering individuals and properties.
Many factors hinder proper adhesion and are responsible for the development of pathological manifestations in the plasterboard, including inadequate filling of ceramic plates, loss of tensile adhesive strength, plate expansion due to moisture, and mechanical property differences between materials [3]. 
Other factors that could affect the characteristics of the materials were assessed by studying thermal characteristics using the classical heat transfer equations for semi-infinite solids considering a flow in the x-direction, without an internal source, and in a transitional regime. 
Failures in these operations can change the expected properties of the materials and, consequently, the lifespan of the external facade coating system.

These coatings have remarkable protective properties when they are exposed to high temperature oxidation (~900°C) due to the initial microstructure and composition [1,2].
In this point result important to explain that expallation phenomena is the loss of the top coat as a result of localized cracking, which is generated by different factors some of them will be presented and discussed in the next champers.
Some researchers suggest that the formation of martensite upon cooling results from the large Al depletion during the rapid interdiffusion in hotter sections, and it has been demonstrated that the transformation affects the mechanical behavior of the coating by producing a linear transformation strain, which appears to enhance the intermediate temperature strength.
Sayre, Factors affecting the microstructure of platinum-modified aluminide coatings during a vapor phase aluminizing process, Surf.
Moskal, Thermal barrier coatings: characteristics of microstructure and properties, generation and directions of development of bond, Journal of Achievements in Materials and Manufacturing Engineering 37 (2009) 323-331

Results & Discussion In Figure 3 are summarized the mechanical properties of all three tested alloys at both ambient and test temperature.
Figure 3: Mechanical properties of the tested alloys at ambiant and at test temperatures.
Figure 5: Degradation of mechanical properties of 625Plus, 718 & 945X in the selected sour environment.
Mannan, Corrosion resistance and mechanical properties of a 140 ksi min alloy 945X for HPHT application, Corrosion, paper 0001393, (2012)
Karpenko, Effect of hydrogen upon the mechanical properties of steel [in Ukrainian] Izd.

Also, absorption of the recycled aggregate influenced durability properties of RAC badly.
Even though much is known about the mechanical properties of the recycled aggregate concrete, an important question remains about its freeze and thaw durability, and it appears that wide-spread utilization of such concrete will be limited until this question is resolved.
That contradiction, along with the limited research on freezing and thawing durability, requires more extensive research to clarify the circumstances in which recycled aggregate concrete may be regarded as frost-resistant and to determine the major factors that affect its durability.
The properties of RAC were given in table 2.
"Mechanical Properties and Durability of Concrete from Recycled Coarse Aggregate Prepared by Crushing Concrete."

The weld region is comparatively weaker than other regions for some reasons like residual stresses and hence the joint properties are controlled by the weld region of chemical composition and microstructure.
The grain size of the weld region also plays a major role in deciding the joint properties.
[2] Zhang M., 2000, Improved microsructure and Properties of 6061 Aluminium Alloy Weldment Using a Double–Sided Arc Welding Process, Metallurgical and Materials Transaction, 31, 2537-2544
[6] Lakshminarayanan A.K., 2009, Effect of Welding Processes on Tensile Properties of AL 6061 Aluminium Alloy Joint, Manuf Technol 40, 286-296
[7] Mondolfo L., 1997, Aluminium Alloys–Structure and Properties, Butterworth-London

The filaments are SF having good mechanical properties.
The morphology and physical properties of the SF: G: C blended fiber mats were investigated. 2.
The next studies will be improving the mechanical property for using in the resorbable barrier membrane.
Ma, Phase separation, pore structure, and properties of nanofibrous gelatin scaffolds, Biomaterials, 30 (2009) 4094-4103
Haghighat Kish, Structural characterization and mechanical properties of electrospun silk fibroin nanofiber mats, Polym.

HAN Qing-hua [2] indicated that restrained boundary condition is an important affecting factor to ultimate bearing capacity and buckling mode of single-layer reticulated shell.
The steel-concrete composite ribbed shell which is studied in this paper is a new large spatial structure, although our research group has investigated the mechanical properties and buckling forms under uniform pressure loads [6], however, all the results were limited under the fixed boundary conditions, the research data of mechanical property and instable mode under the other boundary constraints is not available yet.
The custom section of ANSYS[7] is used, the material properties of steel and concrete are considered, the spatial beam element beam188 is adopted to simulate the composite rib by considering large deformation, large rotation and large strain effects, equal thickness curved shell element shell181 is chosen to simulated the reinforced concrete shell.
To simulate the concrete property, Kent-Park constitutive model with fell segment is selected, while flexible-hardening model with the second line for the steel, in which the stress-strain curve is divided into elastic, strengthening segment.
The whole mechanical process is traced, the variations of the load-displacement and the instable regions are studied in detail, and finally the ultimate bearing capacity is determined.

High Performance Concrete with High volume Fly Ash Jian-Hua Wu 1, a, Xing-Cheng Pu, Fang Liu, Chong Wang 1 College of Material Science and Engineering, Chongqing University China awujianh@263.net Keywords: Concrete using of large dosage fly ash; High Properties Concrete; Pozzolanic activity; active factor; carbonate Abstract.
and Mechanical Properties of Cement Flexural strength (Mpa) Compress strength (Mpa) Density g/cm 3 Specific surface cm 3/g Fineness (0.08mm Sieve) Sieve residue /% 3day 7day 28day 3day 7day 28day Cement 3.18 3500 1.9 5.90 8.40 8.94 33.1 46.2 56.4 Coarse and fine aggregate: Fine aggregate comes from Jianyang, Sichuan Province with fineness modulus of 2.18 and density 2.78 g/cm3 Coarse aggregate: Crushed limestone from Geleshan, Chongqing is used with the grading of 5~10 mm and 10~20 mm, 30 % and 70 % respectively.
The strength is a main factor for concrete to resist all kinds of destroying force.
But for fly ash concrete, the increasing of compressive strength is the result of combination of all kinds of factors; it accelerates the increasing of strength of the fly ash concrete.
[7] L.Pliskin: High Performance Concretes Engineering Properties and Code Aspects, High Performance Concrete-from Material to Structure, 1992, E&FN SPON 186.

In the manufacturing procedure, there are many factors impact the products quality, such as raw materials, methods, man, measure and environment.
Detection for remanufacturing core mainly are geometric accuracy testing, surface quality inspection, physical and chemical properties testing, potential defects (internal cracks, etc.) detection, surface materials and the substrate bond strength and so on.
The difficulty for remanufacturing quality control is how to use the limited quality information before to guide the future production. quality characteristics Indexes obey a normal distributionN(μ, σ2) [[]Jing Sun: Close to Zero Rejects Process Quality Control Tsinghua University Press (2001) (In Chinese) —[]Chunyu Liang: Mach (1998) 168~172 []Sihua Qi, Yetai Fei and Jian Sun: China Mechanical Engineering 12 (2001) 223~225 []Keli Ma: China Mechanical Engineering 10 (1999) 621~622 ] and parameter μ and parameter σ2 are forming a prior distribution.
The control lines are as follows: (12) Certification for remanufacturing products Products quality is not only concern to the process, but also have a link with other factors and it is not only depend on statistical quality management that can be solved commendably.
conclusion There may be a lot of factors that affect the remanufacturing products quality, but detecting the cores is particular important.