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Online since: December 2011
Authors: Li Min Sun, Jing Chao Zou
Plastic molding process is the combined effect of many factors, often taking into account the flow field, thermal field, force field, etc.The thermal field and force field such as the role, in the end reflected in the flow field, so the flow field becomes the key of plastic molding.
Due to the structure of injection molded parts are usually more complex, the plastic melt flow in the mold cavity is a non-isothermal non-steady-state process, and the melt showed a strong non-Newtonian properties, so the study on the injecting flow is quite complex .
Plastic production design can be realized, plastic molded process design, plastic mold design, plastic molding equipment select, material properties and parameters design, such as modeling engineering database and to do numerical analysis.
Weld line of the molecular orientation strongly changes, at the location mechanical strength will be significantly reduced, affecting the overall quality of roducts, the overall strength of the damage plastic parts.
The weld lines distribution was chaotic by scheme 2, but a little far away from the key hole. scheme 3 central weld lines is longer than scheme 2 , and in key positions, after molding of plastic parts is very detrimental to mechanical properties.
Online since: February 2011
Authors: M.K. Besharati Givi, Sina Saeedy
High strength, high ductility and low thermal conductivity cause the austenitic stainless steels to be hard materials to machine so that heat concentrates at the tool cutting edge due to their properties.
Factor DOF Sum of Sqrs.
Factor DOF Sum of Sqrs.
Since AISI 304 is a ductile alloy, the built up edge phenomenon can affect the surface roughness seriously.
It is observed that the optimum condition of cutting speed of 200 m/min and feed rate of 0.2 mm/rev exhibits superior turning properties.
Online since: August 2011
Authors: Ya Nan Fu, Jun Zhao, Long Fei Cheng, Hai Tao Mao
The study on the mechanical properties of FRP bars after high temperature is not systematic and thorough at present, the shear's is even less.
This paper studies shear mechanical properties of glass fiber bars after high temperature, the results can be used in high temperature conditions to continue to carry out the mechanical behavior of FRP and members experimental research, the development of relevant procedures and fire-resistant design to determine the strength of glass fiber bars which can provide reference materials .
This experiment study t the parameters of emperature, diameter, burning vector to affect on shear performance of glass fiber bars, test phenomenon is recorded and he phenomenon of shear failure mechanism is analyzed.
Fiber-reinforced plastics composites—The generals for determination of properties (China 2005)
Guide rule of test for mechanical properties of fiber-reinforced plastics at elevated and reduced temperatures(China 2005)
Online since: November 2025
Authors: Jayson D. Santos, Lexyber Casantosan Manalo, Ismail Mohd Saaid, Manuel Jr. L. Cabiguen
While green resins often lack mechanical strength, nanoparticle reinforcement with carbon nanotubes has shown promise in enhancing binding properties.
The stability of CNT dispersion within resin matrices plays a critical role in optimizing these mechanical properties [36-40].
This exploratory study aimed to identify significant factors influencing consolidation outcomes to guide future investigations.
[39] Coleman, J.N., et al., Small but strong: A review of the mechanical properties of carbon nanotube–polymer composites.
[40] Spitalsky, Z., et al., Carbon nanotube–polymer composites: Chemistry, processing, mechanical and electrical properties.
Online since: January 2009
Authors: Shi Hua Zhou, Hua Quan Yang, Ying Chun Wang
Introduction Concrete cracking is an important factor to affect its durability, which is strongly demanded by the popularity of concrete material and the significance of concrete structures in engineering.
The cause of concrete cracking depends on many factors, including unreasonable structure design, concrete properties (mechanical properties, deformation and thermal properties), external environment and restraint conditions.
The cracking due to concrete properties is a serious problem for concrete elements, which sort "plastic crack" and "stress crack".
Moreover, Chemical admixtures improve the workability of fresh concrete, and the performances of hardened concrete such as mechanical properties, thermal performances, deformation, durability, and so on.
Influence of cracking on the diffusion properties of cement -based materials PartI: Influence of continuous cracks on the steady-state regime[J].Cement and Concrete Research, No. 30, (2000), p. 37-43
Online since: August 2021
Authors: Fajri Syahid Nurhakim, Rina Devnita, Pujawati Suryatmana, Mahfud Arifin, Muhammad Amir Solihin, Apong Sandrawati
However, land management has several limiting factors: the available phosphate content, cation exchange capacity (CEC), and low population of functional soil organisms.
To know the dynamics of the chemical and biological properties of the soil due to the treatment of these materials is an essential aspect for strategy and planning in its proper application to improve the properties of Inceptisols.
On the other hand, the quality of phosphate rock depends on its mineralogical properties, such as carbon content, P content, and particle size.
The CRD was used with two factors.
Chemical properties of Inceptisols Cilembu.
Online since: December 2007
Authors: Rong Yuan Jou, Jui Chang Lin, King Sun Lee, Shih Miao Huang
Study of Mold Design on SD Card with 3D Mold-Flow Analysis Shih-Miao Huang 1, a, Rong-Yuan Jou1, b, Jui-Chang Lin1, c and King Sun Lee 2,d 1 Department of Mechanical Design Engineering, National Formosa University, Yunlin, Taiwan, R.O.C. 2 Department of Mechanical Engineering, ChienKuo Technology University, Changhua, Taiwan, R.O.C.
The injection molding is one of critical process in the field of industry; it possesses high product rate, shorter formation cycle, low waste rate, smooth surface and ease of production of complicated shape formation; the thickness of SD memory card is small, but factors of insufficient filling during the process, large warp and residue stress, are the cause affecting the formation of SD memory card.
Thus, finite difference and numerical method should be used to solve the solution [2,5] Of course, as the polymer is visco-elastic properties fluid, it is optimal substance utilizing visco-elastic formula to solve the problem of fluidity.
Therefore, conducting simulation subject to mold temperature and plastic temperature, determine the major factor improving condition of shorted injection.
From the simulation formation conditions, it was learnt that there are numerous conditions affecting the shrinkage and warp in formation, such as mold design, product design, processing condition and the characteristic of the material itself and so on.
Online since: May 2011
Authors: Rui Chen, Ben Zhuo Zhang, Wei Dong Lei, Wen Bin Luo
Rainfall is a significant factor leading to failure of tailings dams.
Consequently, at the end of rainfall, the maximum depth affected under the grassed surface is larger than that under the bare surface by about one third to one half.
The above mentioned effects make the rainfall infiltrates into soil mass faster and then cause deeper depths affected.
Raindrop and surface runoff are two main factors contributing to surface erosion.
Furthermore, the improvements on mechanical properties provided by the vegetation can enhance the stability of the tailings dam [13].
Online since: February 2014
Authors: Zheng Yi Jiang, Xiao Feng He, Liang Luo, Dong Bin Wei
Thus, an idea implant should exhibit suitable mechanical properties while its surface should support cell growth and adhesion.
Ion implantation bombards the substrate with energetic ions to adjust the surface properties [12].
While growth factors have influences on mitogenicity, osteoinduction and bone cell activity.
Soares: Mechanical Properties of Titania Films Used as Biomaterials, Materials Chemistry and Physics, vol. 102 (2007) pp. 92-97
Davies: Influence of Porosity on Mechanical Properties and in Vivo Response of Ti6al4v Implants, Acta Biomaterialia, vol. 6 (2010) pp. 1640-1648
Online since: November 2012
Authors: Guang Guang Feng, Long Lu
We must ensure that the adhesive force between the coating and the substrate is high enough, or will lose the real meaning in the mechanical properties of the film
The bigger the range R shows that the factors on the influence of the test index are larger.
The excellent mechanical properties of the coating are found while Ti0.33Al0.67N target current is 60A, the bias voltage 150V and the N2 partial pressure 5.0×10-1Pa.
Thickness is one of important decision factors to the preferred orientation of the thin film.
When the film affected by external forces, membrane layer is very easy to fall off if film thickness is too thin.
Showing 11471 to 11480 of 26166 items