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Online since: May 2014
Authors: Pramote Koowattanasuchat, Numpon Mahayotsanun
The following factors were considered: forming steps, forming velocity, grain size, and friction coefficient.
This anti-bacterial surface was comprised of millions of diamond shapes arranged in a distinct pattern that mimicked the microbe-resistant properties of shark skin.
Several important factors that influence the success of microimprinting are: type of forming process, geometric dimension of a surface pattern, material properties of die and sheet, forming steps, forming velocity, and die/sheet friction.
Considered factors in the microimprinting simulations.
Selected grain sizes did not affect the peak errors.
Online since: December 2010
Authors: Ming Yuan, Dong Huang Yan
Owing to lots of closure segments, there are many influencing factors on closure schemes.
A appropriate closure scheme could be promoted by summarizing related information, clearing the stress mechanism, analyzing correlative factors in FE method, compared the healthy monitoring data, and combining with the statistical data of closure schemes obtained from other domestic practical projects.
For this multi-span prestressed concrete box-girder bridge, there are three symmetrical closure sequences affecting the structure stress: - the side span firstly, then side span and middle span at last; - the side span firstly, then middle span and the second side span at last; - middle span firstly, then second side span and side span at last.
After the structure stress and deformation in the finished bridge state under three different closure sequence have been analyzed comparatively, the mechanical properties of box-girder have no significant effect in three different closure sequence under permanent action, while it is different on pier, then the stress of pier in sequence Ⅰ is the most uniform, and the variable range of stress is minimum.
Fig.10 Calculation diagram of Sanbazhou Bridge During the research, the mechanical properties at two state that finished bridge state and 5 years after finished bridge are compared, it is found that bridge displacement is the most uniform in all span in sequence 1, the value is littler than it in sequence 2, displacement increment in sequence 2 for 5 years in 4 mid-spans is less than 5%~18% in sequence 1. thus, displacement of girder is more reasonable in closured sequence 2(side-span firstly, mid-span secondly) (Fig. 11, Fig. 12 and Fig. 13).
Online since: November 2013
Authors: Shu Jun Peng, Jia Ding Wang, Wan Li Xie
Jun Wang etc[7]. tested the mechanical properties of the cement through the undrained triaxial, emphatical analyzing the influence of the confining pressure and cement mixing ratio on cement soil strength, pore pressure and stiffness.
And give an exact quantity estimates about the importance of factors that affect the degree[14].
(2) In the range of experimental factors, the primary and secondary order of factors that affected the vibrated subsidence were cement ratio> water-dipping conditions> vibration frequency> depth> compacting factor.
(3) In the range of experimental factors, the primary and secondary order of factors that affected the dynamic elastic modulus were depth> water-dipping conditions> cement ratio> vibration frequency> compacting factor.
(4) In the range of experimental factors, the primary and secondary order of factors that affected the damping ratio were submerged condition situation> cement ratio> vibration frequency> compacting factor> depth.
Online since: January 2013
Authors: Xiao Hu Zheng
The micro device property was affected by the material, structures and electromagnetic parameters.
Ni-Fe plating has a compact structure, bright and smooth surface and was widely used in the production of new materials that require specific mechanical, chemical and/or physical properties[8].
These alloys also exhibit properties of levelling, ductility, corrosion resistance, and brightness.
Current density, nickel and iron ion concentration of the electrolyte were the most important factors in the process.
The results showed that current density, nickel and iron ion concentration of the electrolyte was the key factors of micro electroforming technology.
Online since: August 2014
Authors: Li Feng Fan, Jian Bin Yun, Jia Xin Yan
But, air bending is influenced by a combination of various process parameters, such as the tool shape and dimension, the temperature change and frictional contact condition, the material properties, and so on.
In analysis process of forming, one of the most important factors is the calculation of springback.
Sensitivity analysis of technical parameters As a complex process, there are a large number of factors that affect the quality of the products in the air bending of JCO forming.
The regression mathematical model for quality evaluation index and influencing factors is established.
(2) The punch displacement h and die span L are key factors that influence the quality of products.
Online since: December 2013
Authors: Afsaneh Valipouri, Seyed Abdolkarim Hosseini, Ahmadreza Pishevar
The diameters of nanofibers were controlled by adjusting the selected affecting parameters such as solution concentration, rotational speed of spinning head, syringe content as well as applied voltage.
Using additives such as salts [3, 4], polyelectrolytes [5], ionic surfactants [6], or some additives may change the properties of polymer solution, mainly the conductivity [7].
We produce solid state polymerized polyamide PA66 nanofibers via well enhanced centrifuge electrospinning by adjusting selected affecting parameters.
Fig. 2 shows FESEM images of SSP PA66 nanofibers fabricated via ASCES by properly adjusting affecting parameters.
The images demonstrate that the new invention has unique ability to produce ultrafine nanofibers just by adjusting some affecting parameters.
Online since: December 2024
Authors: Tran Thi Anh Dao, Nguyen Mai Thanh Thao, Huynh Van Tri
Therefore, the impact of UV radiation on the properties of textiles, food, or other products during production also varies greatly.
These changes can affect other physical properties of textile materials, such as color and mechanical strength, when produced and used by traditional methods.
To study the influence of solar UV rays on the properties of processed products, it is essential to determine the dose of UV rays exposed during the technological process as objectively and reproducibly as possible.
The measuring device is battery-powered, can operate in outdoor testing environments, with little vibration when exposed to wind or other mechanical factors.
The UV Index: Definition, Distribution and Factors Affecting It.
Online since: January 2012
Authors: Bekir Sami Yilbas, Ahmet Z. Sahin, T. Ayar
In addition, cutting process is independent of the mechanical properties of the ceramic material such as hardness and fracture toughness.
The factors affecting the laser cut edge quality were examined by King and Powell [5].
They indicated that the cut quality was affected through modulating the incident laser power at frequencies derived from the natural striation frequency.
They showed that the main parameters affecting the end product quality were the laser output power, the scanning speed of the laser beam, the work-piece thickness, and the assisting gas pressure.
Kanaoka: Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 57 (2001), p. 2441
Online since: February 2020
Authors: Liang An Zheng, Chao Ming Hsu, Cheng Zhu Li, Ruei Han Chen, Jun Yi Lin
Diamond sawing is a mechanical property of contact materials.
In this paper, the finite element method (FEM) and finite simulation software are used to discuss the various impact factors of laser, including material properties, energy, reflectivity, processing speed, spot size, environmental conditions, heat affected zone, etc., through the temperature during the cracking process.
First introduce the material properties and explain the operation mechanism of the wafer separation technology.
These misalignments lead to shortened carrier lifetimes affecting electrical leakage.
There is a need to assess important experimental factors that may affect the outcome and to identify appropriate orthogonal tables.
Online since: April 2022
Authors: Arkadiusz Kwiecień, Konrad Kwiecień, Teresa Stryszewska, Magdalena Szumera
Moreover, such materials will be subjected to cyclic stresses and deformations that should not affect the properties of polymers used.
Ten factors were chosen which are likely to appear in the places of application.
The changes of the filler parameters (e.g. grain size, distribution within the bulk etc.) may lead to changes in mechanical properties.
After 1000h aging under different conditions, the PS polyurethane showed some minor changes in its mechanical properties.
Above this temperature, the degradation occurs in several stages with the loss of mechanical properties.
Showing 9381 to 9390 of 25935 items