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Online since: May 2011
Authors: Ying Li, Bei Hai He
Investigation into the Coating Surface Topography and Properties of Paper Related to Drying Condition Ying Li1, 2, a, Beihai He2,b 1Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming, 650093, China 2State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China aEmail:haishanying@126.com,bEmail:ppebhhe@scut.edu.cn Keywords: Coating structure topography; Drying temperature; Surface properties; SEM; AFM Abstract.
The typical objective of coating is to improve the appearance and printing properties of paper.
The coating structure and surface topography are dependent on factors such as pore structure, coating color formulation, particle arranging,coating speed and drying temperature, et.
The amount and type of latex binder, pigment particle size, and coating condition have a significant effect on both the structure and chemical properties of pigment coatings, which affects critical surface properties, e.g., gloss, ink setting rate via liquid absorption, and spreading properties [4, 5].
Results and Discussion Effect of Drying on Surface Properties and Print Quality of Coated Paper.
Online since: July 2013
Authors: Victor Lopez, Patricia Zambrano, Arturo Reyes
The determination of retained austenite of the HAZ is important in optimizing the welding parameters when welding TRIP steels, because this will greatly influence the mechanical properties of the welding joint due to the transformation of residual austenite into martensite due to work hardening.
TRIP steels differ of conventional steels in their chemical and mechanical properties, resulting multiphase microstructures such as ferrite, bainite and retained austenite traces, this structure transforms to martensite, improving higher mechanical properties, with less thickness equivalent in resistance of conventional steels [3].
Experimental Procedure In this work TRIP 780 steel of 2.8 mm thickness was used with a chemical composition of 0.10 C%, 0.002% S, 1.98 Mn, 0.002 % P, 2.35 % Si, 0.06% Cr, 0.04% Ni, 0.03% Mo, 0.012% Cu, 0.019% V,0.004% Nb and 0.01% Ti and mechanical properties of 652 MPa Yield Strength, 854 MPa Tensile Strength and 20% of elongation.
[A] Voltage [V] Low T44 GMAW ER70S-3 0.09 DCEP 235-255 23.6 111.76 80 Ar-20 CO2 55 0.248 High T36 GMAW ER70S-3 0.09 DCEP 235-255 23.6 91.44 80 Ar-20 CO2 55 0.304 The filler metal used was microwire Lincoln ER70S-3 0.9 mm diameter with a chemical composition of 0.08% C, 1.20% Mn, 0.55% Si, 0.008% P, 0.008% S and mechanical properties of 405 MPa stress yield strength, 510 MPa maximum stress and elongation of 26%, to prepare welding joints two plates of 150 mm wide x 300 mm long in overlap of 25 mm was used, to subsequently deposit a fillet weld with parameters currently used in production lines which are the average values.
This method is known as direct comparison method uses intensity ranges austenite phase (γ phase) and ferrite phase (α phase) and the correction factors of the scattering intensity of each phase.
Online since: March 2006
Authors: Seung Boo Jung, Sang Su Ha, Dae Gon Kim
Growth of the IMC layers followed the parabolic law, while the IMC layer growth was not highly affecting the mechanical properties of the solder joints.
This is primarily due to the combined merits of low cost, good soldering properties, adequate melting temperature range, and proper physical, mechanical, metallurgical and fatigue properties.
Among various Pb-free solder candidates, Sn-Ag-Cu solder is considered to be the most promising candidate owing to its superior mechanical properties and thermal reliability [1].
Cu has been widely used in the under bump metallurgy (UBM) of chip and substrate metallization for chip packaging because of its low cost, good mechanical and electrical properties.
Summary Variations of microstructural and mechanical properties of Pb-free solder joints with Cu UBM during isothermal aging were investigated.
Online since: April 2010
Authors: Joerg Pezoldt, Klemens Brueckner, Matthias A. Hein, Wei Hong Zhao, Matthias Linß, Katja Tonisch, Florentina Niebelschütz
Measured resonant frequencies and quality factors of the magnetomotively actuated MEMS exhibit a dependence on the Ge amount at the interface of the Si/SiC heterostructure.
Introduction Due to its superior temperature and chemical stability, as well as biocompatibility and excellent mechanical properties SiC is a preferable material for high power/high temperature [1] and high frequency devices [2].
To analyze the mechanical properties fres and Q the magnetomotively actuated beam resonators have been measured in vacuum conditions by a differential technique in the frequency domain [8].
The effect of the changed layer quality on the elastic properties above 1 ML is under investigation.
Therefore, within a certain range a Ge coverage prior to carbonization and epitaxial growth allows to adjust the dynamic mechanical properties, i.e.
Online since: November 2011
Authors: Yi Qi Zhou, Zhen Zhou, Xiu Fang Zhang, Rui Huo
The SEA result was compared with the modal solution, and the properties and influencing factors of vibratory energy transmitted through rolling bearings were analyzed furtherly.
The SEA result was compared with the modal solution, and the properties and influencing factors of vibratory energy transmitted through bearings were analyzed.
Mechanical Model θb Mb Fr sr Fig.1 Mechanical properties of rolling bearing Mechanical Properties of Rolling Bearings.
Because axial force has little influence here, the mechanical properties of the rolling bearing can be expressed as
large stiffness small stiffness Power flow (w) Frequency (Hz) Frequency (Hz) Power flow (w) symmetric structure asymmetric structure Fig. 10 Power flow of different stiffnesses Fig. 11 The effect of the gear installation position on power flow Analysis of transmission properties and influencing factors of the vibratory energy By assuming two of the three bearing stiffnesses, i.e. kbrr, kbqq and kbrq, fixed, and letting the third one increase or decrease by same ratio, changes of Ptr are investigated in Fig. 9.
Online since: November 2016
Authors: Hong Wei Yan, Yong An Zhang, Ya Nan Li, Guo Jun Wang, Xi Wu Li, Bai Qing Xiong, Long Bing Jin, Zhi Hui Li
In the production process of 7000 series aluminum alloys, rapid cooling obtained by immersion or spraying quenching is necessary to achieve desired mechanical properties [1].
Residual stresses can influence material mechanical properties such as fatigue strength and stress corrosion performance, they also cause distortion during subsequent machining process [2].
Hot and boiling water is effective at reducing residual stresses, but the properties can be severely affected [13].
The material properties of aluminum alloy 7055 used in the FEM analysis are described in Table 1.
In summary, order of factors are E˃F˃D and other factors have less influence.
Online since: October 2014
Authors: Rudeerat Suntako
ZnO affects to the vulcanization rate and the rubber product properties.
Cure characteristics and mechanical properties.
The mechanical properties are determined using an autograph (AG-IS, Shimadzu), as described by ASTM D 412 method.
The effect of synthesized ZnO nanoparticles and the conventional ZnO on mechanical properties of unfilled natural rubber are summarized in Table 4.
For the mechanical properties is increased, elongation at break and permanet set decreased with increasing synthesized ZnO nanoparticles loading.
Online since: April 2011
Authors: Wen Xian Tang, Hu Li, Zong Hua Hu
Selection of multi-contact simulation parameters based on the model of material properties and geometric characteristics would determine the validity of the solving result of multi-contact.
In Mechanical Systems, viscous damping is most commonly used.
Coefficient of restitution must be determined by the experiment and it is influenced by many factors such as material properties and geometric characteristics and so on.
Therefore, the maximum damping coefficient is related not only with their own material properties of the two collision objects (Young's modulus, Poisson's ratio, etc.), but also with the geometric characteristics and motion characteristics of two collision objects.
Conclusion The research and analysis show that viscous damping coefficient affects the rigid body contact force.
Online since: August 2021
Authors: Anastasia A. Yuzhakova, Dmitrii D. Salimgareev, Liya V. Zhukova
Zhukova1,c* 1Ural Federal University, Ekaterinburg, Russia aa.a.lashova@ufru.ru, bd.d.salimgareev@urfu.ru, cl.v.zhukova@urfu.ru Keywords: silver halides, thallium halides, optical properties, mechanical properties, electrical properties.
The authors have developed methods for studying the optical, mechanical and electrical properties of materials.
Analysis Methods and Formulas for Calculating Properties Methods for Measuring Optical Properties.
The analysis of mechanical properties is necessary for calculating the loads on the device during its design.
Methods for Measuring Electrical Properties.
Online since: September 2020
Authors: Yang Zhao, Wei Dong Wang, Yue Li, Hongfa Yu
Its physical and mechanical properties are shown in Table 1 and its chemical composition is shown in Table 2.
Therefore, it can be considered that all the factors will affect the flexural strength of concrete.
Therefore, it is meaningful that all the factors mentioned in Table 3 will affect the strength of concrete.
Tian, et al, The physical and mechanical properties of chloride-based deicers at 0 ~﹣30℃, J.
Yang, et al, Properties study of asphalt containing deicing agent, J.
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