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Online since: January 2016
Authors: Jun Wang, Guan Heng Yeoh, Kunlapat Thongkaew
Alberdi et al. [3] claimed that the machinability index for polymer based composites by AWJ may not be grouped as ductile or brittle materials because of the special properties of the fiber-matrix composites.
The target workpiece was woven carbon fabric/polyetheretherketone (PEEK) sheets whose major properties are given in Table 1.
Properties of a woven carbon fabric/PEEK sheet.
It is found that all the process parameters affect the hole diameter deviation.
The high water pressure applied is found to be a significant factor contributing to the defects on AWJ machined composites.
Online since: June 2012
Authors: Yong Ye, Bao Cheng Liu, Zi Xiong Guo, Yang Liu
Material Properties.
Nominal rod properties, as specified by the supplier, were 2000 MPa tensile strength and 150 GPa Young’s modulus.
The neutral axis shifts from symmetric position of the cross section and moves towards the compression zone while loading due to nonisotropic material properties, and the ratio of compression zone height to tensile zone height approximately equals to 0.8.
(5) The flexural bearing capacity and failure mode of reinforced stone beams are affected by the diameter of CFRP rods.
(7) The bond between NSM CFRP rods and granite is an important factor that affects the flexural behavior of reinforced stone beams.
Online since: April 2013
Authors: Ewa Rysiakiewicz-Pasek, A. Ciżman, J. Kutrowska, R. Poprawski
The size effect on the on dielectric properties and phase transition temperature is presented.
It has been shown that physical properties of ferroelectric materials in a confined media differ from properties of bulk crystals.
The pores filling factor was estimated by weighing the glass.
It has been shown that the physical properties of KAxDP – porous glasses nanocomposites are similar to the properties of the bulk KAxDP crystals.
Bogdańska, Influence of water adsorption on mechanical properties of porous glasses Optica Applicata XXX (2000) 173-176
Online since: May 2021
Authors: M.R. Sahar, Nur Aina Mardia Adnan, E.S. Sazali
Attempts have been made to come up with a solid-state laser comparable to NdYAG which is currently the most common due to its easy maintenance, good thermal and mechanical properties [2].
However as of late, reports are still lacking in the fabrication of these glass rods as laser mediums and their lasing properties.
Hence, the quality and efficiency of the laser can be directly affected.
Matori, Optical Properties of Erbium Zinc Tellurite Glass System, Adv.
Samavati, Effect of AgCl on spectroscopic properties of erbium doped zinc tellurite glass, J.
Online since: August 2014
Authors: Dong Hui Zhao, Hui Zhang, Jun Xing Hou
Mechanical and Hardware Structure Design of End Effector Mechanical Structure Design of the End Effector.
The mechanical hand materials is adopted alloy-steel, has good strength, hand structure as shown in figure 2 [7].
In order to make the sensor has a wide range of vision, and is not affected by the end effector, visual sensor installation using eye in hand.
Fig. 4 Analysis of stress of fingers Mechanism Design of the Mechanical Arm Mechanism of the Mechanical Arm.
Joint Control in Mechanical Arm.
Online since: April 2024
Authors: Oualid Limam, Armia Ghrairi, Lassaad Ajam
The proposed mixing plan allows evaluating different ingredient proportions and their effects on the thermo-mechanical properties of the final product.
This porosity has an effect not only on the density of the product but also on its mechanical and thermal properties.
The thermo-mechanical properties of bricks made with the incorporation of TS were compared to those of conventional bricks without any addition.
This phenomenon explains the increase in thermal and mechanical properties at the same time.
Siddika, Effects of waste glass addition on the physical and mechanical properties of brick, Innovative Infrastructure Solutions, vol. 6, (2021) 1-13
Online since: July 2005
Authors: M. Siddique, Muhammad Abid, H.F. Junejo, R.A. Mufti
Temperature dependant material properties for above material were presented by Karlsson, and Josefson [7].
Material properties assigned to each element in FZ and HAZ during both thermal and structural analysis depend on the peak temperature reached on that element.
Welding speed directly affects the rate of heat input, hence changes the dimensions of FZ and HAZ.
The influencing factor is heat input which has positive effect on residual stresses and zone of influence.
Kang: The Effects of Root Opening on Mechanical Properties, Deformation and Residual Stress of Weldments, AWS Welding Journal, (2001), p. 80/S-89/S
Online since: October 2010
Authors: Valentina Casalegno, Paolo Veronesi, Cristina Leonelli, Roberto Rosa, Milena Salvo, Monica Ferraris, Anna Bonamartini Corradi, Shao Hua Han
The equation evidences the two contributions, by E and H to the heat generation, thus microwave processing in predominant E or H field is expected to lead to different results, on the basis of the dielectric and magnetic properties of the powder compacts.
In fact positioning the sample in the maximum of the electric field or in the maximum of the magnetic field positions (referred to the empty applicator) could lead to different reaction mechanism and as a consequence to different microstructures and mechanical properties [7].
Moreover SiC dielectric properties (high losses) are better exploited when heating in the maximum of E field, and this can be used to further enhance the joining.
Considering 1773 K limit as maximum service temperature for continuous use of CVD SiC, modeling results reported in Figure 7b show that the microwave assisted combustion synthesis approach for joining affects only very small layers around the materials to be joined, and this occurs for less than 2 seconds if MW are turned off immediately after CS ignition (for instance using a light sensor device).
Modeling results revealed the small extension of the heat affected zone and its limited existence time, so that overheating resulted limited to the reaction zone alone.
Online since: December 2018
Authors: Benjamin Klusemann, Martin Froend, Stefan Riekehr, Josephin Enz, Nikolai Kashaev, Frederic E. Bock
These stresses also affect the substrate.
As pointed out before, this is a driving factor with respect to control the heat transfer and cooling conditions in such a way that residual stresses are reduced.
Van Der Biest, “Wire based additive layer manufacturing: Comparison of microstructure and mechanical properties of Ti-6Al-4V components fabricated by laser-beam deposition and shaped metal deposition,” J.
Dalgarno, “A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties,” Prog.
Mills, “Metals and Surface Engineering,” in Recommended Values of Thermophysical Properties for Selected Commercial Alloys, Woodhead Publishing Limited, 2002, pp. 32–36
Online since: January 2006
Authors: Jia Sheng Heh, Ming Chang, Jen Cheng Chen, Jui Wen Chang
Advanced Process Control Expert System of CVD Membrane Thickness Based on Neural Network Ming Chang1, a, Jen-Cheng Chen2,b, Jui-Wen Chang1,c and Jia-Sheng Heh2,d 1 Department of Mechanical Engineering, Chung Yuan Christian University 2 Department of Information and Computer Engineering, Chung Yuan Christian University #200 Chung-Pei Road, Chung Li, Taiwan 32023, R.O.C.
In general, there are many factors would influence the membrane quality.
The threshold function f( · ) possesses the properties is    < ≥ = 0,0 0,1 )( z z zf ������������������������������������������������� It will make the neuron activated if 0u(x)≥ .
Since pressures affect flow field and growth rate of the crystal, they all have complex relationship with CVD process, and this rule means that these small shifts of pressures have positive effect to the thickness of membrane.
Some factors which should affect the thickness of membrane (like flow of gas, pressure, temperature and RF-Power support) are not chosen as the inputs of the neural network, because of the lower correlation value.
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