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Online since: February 2012
Authors: Ji Bin Pei, Yun Feng Zhao, Shao Ping Yu, Jie Zhao
Creep rupture data generally exhibits certain dispersity because of uncertainty factors in materials and experiment conditions.
Most design methods of rupture property are deterministic.
Reliability is used in electronic and mechanical domains.
As the rupture property is mainly the association of temperature, stress and rupture time, many parametric methods take some of these three factors into account and put the data in a band.
The safety is affected by dispersion degree of creep rupture data obviously.
Online since: April 2021
Authors: Antti Järvenpää, Markku Keskitalo, Mikko Hietala, Matias Jaskari, Atef Saad Hamada, Jani Kumpula
The mechanical properties of the dissimilar joints were evaluated by hardness measurements and tensile tests.
Prediction of mechanical properties of the joint can be very complicated in dissimilar joints due to differences in physical properties such as yield and tensile strength, elongation, and hardness.
The high cooling rate of the laser-welding results the formation of a fine microstructure which leads to improved mechanical properties of the weld [8].
However, there are few factors affect sustainability of laser-welding process, such as high energy consumption and costly set-up requirement relative to other welding processes [9,10].
Measured properties of the test materials.
Online since: July 2012
Authors: C.A. Featherston, Rhys Pullin, Mark J. Eaton, O.J. Wood, D. Kennedy
Research is being undertaken to investigate the various factors affecting the power output of such a system, including the design of the harvesters used (length, width, number of layers), their positioning and their orientation.
The weighting factors for the plate are shown in Table 5.
Again this would affect the overall optimal position of a harvester.
The implementation of such systems however is currently restricted by factors such as the lack of a no maintenance power supply.
Waanders, Piezoelectric Ceramics: Properties and Applications.
Online since: September 2024
Authors: Edward B.O. Ang, Ricky D. Umali, Reylina Garcia Tayactac, Ralph Andrei S. Cabural, Francis Marcus J. Garcia, Paulo Gabriel I. Rivera, Dariusz Gabriel F. Valentino, Gawayne M. Escalona
Bending tests determine material quality and mechanical properties before winding joints into coils.
Physical Properties of A36.
The mechanical properties of ASTM A36 are listed in Table 2.
Mechanical Properties of A36.
Both trials did not meet the standard tensile strength for A36 steel due to factors like welder procedure and steel machining.
Online since: August 2011
Authors: Zhi Qiang Liu, Guo Giang Guo, Qiu Lin Niu, Ming Chen, Xiao Jiang Cai
However, Because of their unique physical and chemical properties: high strength maintained at elevated temperature and low thermal conductivity, titanium alloys have poor machinability in grinding.
These are the main factors which affect the surface integrity.
TC18 and TA19 alloys with mechanical properties reported in Table 1 were utilized as the workpiece material in the grinding tests.
That is why TC18 alloy has much high strength and poor high temperature properties relative to TA19 alloy.
Heat-affected zone Heat-affected zone (b)TA19 (a)TC18 Fig. 5.
Online since: December 2014
Authors: Shao Jun Wei, Ji Xiang Gao, Lie Jun Li
Microstructure and Properties of Niobium Microalloyed Pipeline Steel in CSP and Steel Pipe Produced by ERW GAO Jixiang1,a* , LI Liejun1,b, WEI Shaojun2,c 1.School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China 2.Panyu chukong Steel pipe Co.
By analyzing the effect of ERW on mechanical properties of steel pipe, as well as changes of mechanical properties of steel plate and steel pipe,it could provide guidance for setting steel reasonable performance indicators.
The mechanical properties of plate and steel pipe of φ323.9×9.5mm X65 produced by EWR were statistical.
Special emphasis was, strength properties had a great relationship with pipe forming and expanding process.Under the conditions of forming different aspect ratio and the different expansion ratios ,the strength properties were not the same, so the role of various factors must be taken into account.
Study on Microstructure and Properties of Ultra High-strength Weathering Steel Produced by TSCR [D].​​, South China University of Technology, 2012
Online since: May 2011
Authors: Yi Zhou Zhuang, Bao Chun Chen, Tao JI
The presence of skew sometimes affects the geometry of many bridge details and mechanical behaviors.
Skew angles greater than 20° also affect bending moment and shear in the exterior beams.
Live load distribution over a bridge deck depends on the design type (i.e., prestressed box-beam, I-beam, T-beam or steel box-beam, I-girder), span length, skew angle, number of beams, slab thickness, edge-to-edge width, beam eccentricity, beam moment of inertia, and other geometric properties.
The design of slab-on-girders is commonly based on the AASHTO wheel load distribution factors.
These correction factors should be used in conjunction with the corresponding shear distribution factors.
Online since: August 2014
Authors: Gheorghe Paltanea, Dorina Popovici, George Papanicolaou, Mihael Sultan, Veronica Manescu Paltanea
The factors affecting the load carrying capacity of an adhesive joint can be summarized as follows: geometrical configuration of bonded parts, adhering conditions, surface roughness, thickness of the adhesive layer and pressure applied to adhesive resin [2].
So, for a safe joint in structures it is important to know what happens in joints, and how is their strength influenced by different factors.
In this paper it was used as material for piezoelectric actuators the lead zirconate titanate PZT – 5H, which is also a pyroelectric and a ferroelectric material and its properties are those listed in [7].
In case of the PZT-5H the material properties are considered as in [7].
The adhesive properties are: E2 = 3.22 GPa, ν2 = 0.4 and ρ2 = 1090 kg/m3.
Online since: December 2010
Authors: Bo Zhao, Guo Fu Gao, Jin Xue Xue
Many researches reported the forming of the nano ceramics and its properties[2-5], but researches on the grinding mechanism are insufficient.
The critical ductile grinding depth relates to not only the processing methods and the material properties but also the geometric parameters of cutting lip, grinding speed, grinding depth, grinding fluid and so on.
The changes of the inner micro-characters of the material under ultrasonic wave field are the important factors which affect the value of ξ [6]. ξ of common brittle material misfit the nano-ZrO2 ceramic.
The factors that affect ξ2 may relate to the micro-change of the material constitutive relation under ultrasonic energy, which is the reason of the change of E and H.
The experiment proved that various factors affect the ξ value.
Online since: February 2014
Authors: Jian Bo Liu, Zheng Zhao, Ji Tian Song, Xiao Fei Xu, Wei Tian
The Experimental Study on the Enhanced Evaporating Property of the Pineapple Juice by Ultrasound Jitian Song1,2,a, Xiaofei Xu, Wei Tian, Jianbo Liu, Zheng Zhao2 1College of Mechanical Engineering, Tianjin University of Science & Technology, Tianjin, 300222, China 2College of Food Engineering and Biotechnology, Tianjin University of Science & Technology, Tianjin, 300222, China aemail: songjt@tust.edu.cn Keywords: Pineapple Juice; Evaporator; Ultrasound; Heat Transfer Coefficient Abstract.
The effects of various factors on the heat transfer coefficient were analyzed, including feed rate, evaporating temperature, temperature difference of heat transfer, and juice concentration.
This fouling would affect the quality of the juice.
The ultrasonic evaporator Results and Analysis This section is to discussion the effects of various factors on the performance of heat transfer in the evaporator.
The other two factors (temperature difference and concentration) remain the same as listed in Figure 2.
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