Search results

Sabree1,a*, Ola Saleh Mahdi2,b, Fatima Shaker3,c and Mariam Ibrahim4,d 1,2,3,4 Faculty of Materials Engineering, The University of Babylon, Iraq amat.asraa.kahtan@uobabylon.edu.iq, bmat.ola.saleh@uobabylon.edu.iq, cfatimajamalaldeen@gmail.com and dmariamibrahim9625@gmail.com Keywords: bioactive glass, bone tissue engineering, diopside, wollastonite, biodegradation, bioactivity.
All these outcomes nominate the 70Si-30Ca bioglass - Magnesia composite as promising bioceramic material for dental and bone tissue engineering.
Pena.; Bone-Like Apatite-Forming Ability of Ca3(PO4)2-CaMg(SiO3)2 Ceramics in Simulated Body Fluid; Key Engineering Materials, (2009), Vols. 396-398, pp 103-106
Reis; Book chapter: Natural Origin Materials for Bone Tissue Engineering – Properties, Processing, and Performance, (2019),535-558 [10] G.C.
Sadami, Study of diopside ceramics for biomaterials, Journal of Materials Science: Materials in Medicine, (1999), volume 10, 475–479

By involving more people in the design phase, leveraging new technology and materials, maintaining quality consistency, and delivering projects faster and with higher quality, CE boosts productivity and prevents errors [52].
ADFs are responsible for producing uncoordinated and incorrect construction documents, specifying outdated building materials or technologies, ignoring the role of the client and behaving unilaterally [64].
Schmid, Manufacturing engineering and technology, Hoboken, NJ: Pearson, 2020
Majchrzak, “Concurrent engineering tools: Are the human issues being ignored?
,” IEEE Transactions on Engineering Management, vol. 43, no. 2, pp. 189-201, 1996

The research process and application prospect of the smart piezoelectric materials Xiaoliang Fang1, a, Weifang Zhang1, b, Hongxun Wang 1, c 1BeiHang University, School of Reliability and Systems Engineering, Science & Technology Laboratory on Reliability & Environment Engineering, XueYuan Road No.37,HaiDian District, Beijing, China.
Studies on piezoelectric materials are now the research focus and hotspots of smart materials which have achieved fruitful results.
The common perception materials include photosensitive materials, heat-sensitive materials, moisture-sensitive materials, acoustic emission material, inductor material, shape memory materials, magnetostrictive materials, piezoelectric materials etc.
The common actuating materials include shape-memory materials, electrostrictive materials, electrorheological fluids, magnetostrictive material, magnetorheological fluid and piezoelectric materials [2, 3, 4].
The key focus of the study of smart piezoelectric materials are to compound the structures and increase the serviceability.

Effect of size of graphite flakes on the physical properties of the graphite materials Sun Shujie1,a, Liu Xiujun1*,b, Li Tongqi2,c, Fan Zhen2,d, Feng Zhihai2,e 1 School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China； 2National Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials and Processing Technology, Beijing 100076, China asunshujie90@163.com, bliuxiujun@tjpu.edu.cn, ctongqi_li@126.com, dfanandzhen@yahoo.com.cn, efengzhh2006@.sina.com Keywords: Mean particle size; Physical properties; Graphite materials Abstract.
The raw materials of graphite materials include binder and reinforcement.
Generally, graphite materials were regarded as engineering materials in applications, the raw material and fabrication process had significant effect on mechanical properties and conductivity of graphite blocks.
The authors wish to thank National Key Laboratory of advanced functional composite materials, aerospace research institute of materials and processing technology in China.
New Carbon Materials 2001; 16: 45-48

Manufacture parts and components, including through the absorption of advanced surface engineering technology, a variety of new technologies, new processes, the implementation of re-manufacturing process or generated upgrading the performance of the same or higher than the original products of the re-manufactured products; 3.
Recycling vehicles including parts and materials re-use the re-use; it should be mainly at the design stage to consider two aspects of this design strategy.
Fig.3 the disassembly of the design criteria for the design (2) Guidelines to reduce the types of materials.
Design for Recycling Disassembly of the Key Technologies.
Cai: China Mechanical Engineering (2000)No.9, p. 987 -991.

The theory and stability studies on composite bolted rock mass Xiliang Liu 1, a, Hongyu Liu 1, b , Xianjun Han 1, c 1School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China axilliu@hpu.edu.cn, bliuhongyu0107@126.com, c xjhan-2003@163.com Keywords: Composite materials mechanics, Equivalent mechanical model, Stability of roadway, Bolted rock mass, Numerical simulation.
By comparison analysis, the displacement and stress error of key points are all under 5% in two patterns, which is in the control of engineering allowed.
Vol.31(1994), p. 273 [5] Chen S H, Eager P, Migliazza R: Proceedings of the ISRM International Symposium on Rock Engineering for Mountainous Regions. 2002, p.25 [6] Xinping Li, Tao Wang, Guihong Song, etc: Chinese Journal of Rock Mechanics and Engineering.
Vol.25(2006), p. 3654 [7] Tao Wang: Research and Numerical Simulation of Anchoring Composite Support System in Layered Rocks Based on Mechanics of Composite Materials (Wuhan University of Technology, Wuhan 2006) [8] Weiming Wang, Shenghong Chen: Chinese Journal of Rock Mechanics and Engineering.
Vol.25(1998), p. 273 [11] Leimin Chen，Baoning Yang: Mechanical analysis for composite materials (China Science and Technology Publishing, Beijing2006) [12] Zhenming Wang: Composite material mechanics and Composite structure mechanics (China Machine Press, Beijing1991) [13] Yong Zhang，Dexin Nie: Journal of Engineering Geology.

Engineering supervision system in China has already implemented more than 20 years.
The supervision of the implementation of project construction management is based on engineering project construction documents approved by the state, the relevant laws and regulations of engineering construction, engineering construction supervision contract and other engineering construction.
The implementation of engineering supervision system in China started.
The qualification and expense became the key to selection.
J: submitted to Journal of Henan building materials (2012) [5] Z, Y. and Y.Z.Q: submitted to Journal of The Chinese market (2011)

A Design and Research on GMM Precision Flow Pump Dehui Liu1,a, Liwen Liu1,b, Gang Tang1,c, Hongmin Wen1, Quanguo Lu1 1School of Mechanical & Electrical Engineering, Nanchang Institute of Technology, Nanchang, China adehuiliu @163.com,bliwenliujian@126.com,ctg3222138 @163.com Keywords: giant magnetostrictive materials ;Flow pump ; Precison control Abstract：A new type of the precision flow pump is developed with the giant magnetostrictive materials as the driving source.
Experiment has been conducted to test the performance of the pump with designed key components.
A design is also made to some key components such as the giant magnetostrictive rod and driving coil.
Therefore, preloading mechanism, the size of GMM rod and the driving coil should be the key points in designing the structure parameters of GMM precision flow pump. 3.1 Preloading Mechanism Design As a preloading stress on the GMM rod can not only increase the strain of GMM rod, but also decrease the material output force, a preloading mechanism is usually applied in a GMM brake.
[2] Chengying Li etc,The research and application development of the rare earth giant magnetostrictive materials in China, The journal of Liaoning Institute of Technology,1999:19(3):14~20

The divisional design method can improve resistance to progressive collapse obviously and is of certain reference value for engineering.
Consequently, it has been used in gymnasium, exhibition and civil engineering structure.
Material of the structure is Q235 steel.
Stress-strain curve of the material is shown in Fig.5.
To sum up the above arguments, the train of thought proposed in this paper which includes analysis of the key elements and divisional design is of certain reference value for study of resisting progressive collapse and engineering.

Finite element simulations of an inchworm type piezo-driven rotary actuator Hu Huang1, a, Lu Fu1,2, b, Hongwei Zhao*1,c and Chengli Shi1,d 1College of Mechanical Science & Engineering, Jilin University, Changchun, Jilin 130025, China 2AVIC Beijing Chang Cheng Aeronautical Measurement and Control Technology Research Institute, Beijing 100176, China ahuanghuzy@163.com, bfulu0796@163.com, chwzhao@jlu.edu.cn, dshichengli163@163.com *Author to whom correspondence should be addressed.
Keywords: Finite element simulation, Piezo-driven, Rotary actuator, Key units.
Static and modal analyses of key units of the rotary actuator such as the clamping unit and the driving unit were carried out by finite element simulations to ensure that key units of the rotary actuator have enough strength and good dynamic characteristics.
Due to the disadvantage of limited output displacement of piezoelectric materials, one of key issues for piezo-driven stages is to increase their motion range meanwhile maintain their high motion accuracy.
Fig. 1 Key components of the inchworm type piezo-driven rotary actuator.