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Chan and Lankford proposed a correction factor to make stress intensity factor range, , be suitable for the MSC on the basis of the concept of microstructurally dissimilitude [6].
The mechanical properties were listed in Table 1.
Mechanical properties of TC4 with different microstructures Microstructure Ultimate tensile stress (MPa) Yield stress (MPa) Primary α grain 940 823 Bi-modal 980 912 Figure 1.
In return, the combined plasticity affects the growth behavior of crack itself.
It should be noted that different stress level does not affect this proportional relationship for each material.

A user-engineering design interaction supporting rational product cooperative design Jianjun Qin1,2 a, Yan-an Yao1,b , Jianwei Yang2,c 1 School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044 Beijing, China 2 Department of Mechanical-electronic and Automobile Engineering, Beijing University of Civil Engineering and Architecture, 100044 Beijing, China ajjqin@yahoo.cn, byayao@center.njtu.edu.cn, cyangjianwei@bucea.edu.cn Keywords: User-engineering interaction; utility; engineering design decision; cooperative design Abstract.
Purchase behavior of consumers at least relate with three main factors: the characteristics of consumers, related competitive products on the market, and the particularity of the region.
Kano distinguished between three types of product requirements which influence customer satisfaction in different ways when met: Must-be requirements: Customer first and will need to consider factors that will directly affect whether consumers will buy the product change, or if you do not have these functions even if the product a cheaper product features that consumers would not consider buying.
Modules are defined as the components in group should share some property.
Journal of Mechanical Design, 1994. 116: p. 801

BIOMORPHIC CERAMIC HAVE SEVERAL ADVANTAGES OVER CONVENTIONAL CERAMIC SUCH AS EXCELLENT IN COMPRESSION AND FLEXURAL PROPERTIES [6].
THE UNIQUE PROPERTIES OF BIOMORPHIC SIC MAKE IT USEFUL FOR MANY APPLICATION SUCH AS FILTER, CATALYST SUPPORT, TOOLING COMPONENTS AND ALSO LIGHTWEIGHT APPLICATIONS.
Another factor affecting the formation of SiC may be due to the contact angle, θ.
REFERENCES [1] Greil.P, Lifka.T and Kaindl.A., Biomorphic cellular silicon carbide ceramic from wood:I Processing and Microstructure II Mechanical Properties, J.Eur.Ceram.Soc, ,18,pp.1961-1975,(1998)
S, Laminated biomorphous SiC/Si porous ceramics made from wood veneer, Materials and Design 34, pp.528–532,(2012) [4] Milan Gordica,n, DusanBucevaca, JovanaRuzica, SuzanaGavrilovicb, RadmilaHercigonjac, Miroslav Stankovicd, BrankoMatovica, Biomimetic synthesis and properties of cellular SiC Ceramics International 40,pp.3699–3705,(2014) [5] J.Martinez-fernandez and RM.Valera-Feria, High Temperature Compressive Mechanical Behavior of Biomorphic Silicon Carbide Ceramic, Scripta Mater,43,pp.813-818.(2000) [6] J.H.

Such 3D-printed parts are very lightweight and possess superior mechanical properties, which makes them a potential candidate for applications where a high strength-to-weight ratio is desired.
Initial experiments have shown that the flow rate affects the feeding of the filament and hence the pressure on the deposited layer leading to changes in the print properties.
Cheng, Influence of mixed isotropic fiber angles and hot press on the mechanical properties of 3D printed composites, Addit.
Advani, A review of factors that influence the fracture toughness of extrusion-based additively manufactured polymer and polymer composites, Addit.
Ghazali, Comparative study of the sensitivity of PLA, ABS, PEEK, and PETG’s mechanical properties to FDM printing process parameters, Cryst. 11(8) (2021) 995. doi: 10.3390/cryst11080995

The release properties of CH and sirolimus contained PLGA films are shown in Figure 1.
After 15 days incubation, films containing CH had more folds than films containing sirolimus which indicated that films containing CH had worse mechanical properties.
There are two parameters to affect mechanical properties of films.
Which factor plays the dominant role is still unclear from surface morphology observation.
a b Figure 4 Weight loss curves of drug containing films: (a) with drugs; (b) without drugs Conclusions In this study, we prepared PLGA films containing CH or sirolimus to investigate the drug release and degradation properties of films.

Other advantages like corrosion resistance [5], interesting magnetic properties, high strength to weight ratio and heat resistance can be achieved by cold welding.
As described by [6] the bond strength of metal joints due to the plastic deformation depends on different factors, such as surface conditions, temperature, and surface enlargement.
According to the model of Bay [15] and Zhang [17], the effective surface exposure, which is determined by the surface enlargement after the breakup of the covering layer, and the contact stress at the weld interface, are crucial factors affecting the bond strength.
However, in addition to the surface enlargement, the occurring stress at the interface is also affecting the weld strength and weld formation.
[11] Springer, H., Kostka, A., dos Santos, J., Raabe, D.: Influence of intermetallic phases and Kirkendall-porosity on the mechanical properties of joints between steel and aluminium alloys (2011).

Minimum Sensitivity Robust Design of Cycloid Pinwheel Speed Reducer Lu Xinchun1, a 1School of mechanical engineering, Huaihai Institute of Technology, Lianyungang, China aluxinchun111@126.com Keywords: Cycloid pinwheel; Speed reducer; Robust optimal design; Minimum sensitivity Abstract: This paper advanced a kind of method that put sensitivity analysis of target function and restriction conditions into robust optimal design of cycloid pinwheel speed reducer.
Especially, some important parameters affect the properties and service life of reducer directly.
Usually, the load and material properties are regard as constants in design.
In this design, considering input power P and input shaft speed n will be fluctuation with the effect of the external factors, so they were regard as uncontrollable factors.
References [1] Department of Mechanical in Zhengzhou Institute of Technology, Cycloid Pinwheel Planetary Transmission, first ed., Beijing Science Press, Beijing, 1979

Carbon fiber reinforced polymers (CFRP) are superior in physical and mechanical properties and ease of handling, so they are widely used in structure reinforcement and strengthening.
The present researches of prestressed CFRP-reinforced structures focus on the static mechanical properties, and whereas, little is known of the fatigue properties of the structure under the alternating loading.
It is a common failure mode, which can be avoided substantially by improving the bonding quality and enhancing the anchoring, as well as by changing the mechanical properties of adhesive layers
The basic mechanical properties (crack load, yield load and ultimate load) of flexural members can be obtained through the SM model, and the stress state of adhesive layer can be analyzed; the fatigue property (fatigue life) can be obtained through FM model.
Additionally, the elastic modulus of the adhesive layer has little effect on the analysis of mechanical properties of members, but affects the stress level of adhesive layer very obviously.

Fibers in concrete provide improved mechanical and physical properties of the material.
The deformation characteristics of a material are just as important as its strength properties.
PVA fiber properties are listed in Table 1.
In the future, the physical and mechanical properties of new HPFRC containing PVA fibers with and without nanosilica should be investigated in a more detailed way.
[7] ACI Committee 209, Report on Factors Affecting Shrinkage and Creep of Hardened Concrete (ACI 209.1R-05) American Concrete Institute, Farmington Hills, Michigan, USA, 2005

Preparation and Properties of Al-doped ZnO Thin Films for Solar Cells Yinglian Wang1, a, Yuehui Hu1,b and Junyao Ye2,c 1 Department of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China 2 College of Information Engineering, Jingdezhen Ceramic Institute Jingdezhen 333403, China asdwyl@126.com, b8489023@163.com, csdyejunyao@126.com Keywords: Al-doped ZnO thin films; Al-doped concentration; aging time Abstract.
SnO2:F is easy to be restored black by hydrogen plasma, resulting in deterioration of optical properties, searching for new conductive films to anti corrosion of hydrogen plasma imminently.
But preparation of ZnO: Al thin films by sol-gel has many factors, there are a lot of non-equilibrium state, so the microstructure and production process of films have great relationship.
Fig.1 AFM spectras of ZnO:Al films (a) before treatment (b) after treatment Drying under 150℃, only the solvent ethanol (boiling point is 78.4℃), water (boiling point is 100℃) and some organic compounds evaporate, but the reaction of ammonium acetate (boiling point is 222℃) is still in the film, the presence of ammonium defects during annealing process, the grain growth affected, during drying process, the main component is Zn (OH)2 grain, as well as generated 2Al(OH)(NO3)2·H2O, almost no ZnO grain, as shown in Fig.1.
Analysis shows that Al doping concentration can affect the crystallization of films.