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Online since: June 2008
Authors: Emmanuel Bauné, E. Galand, B. Leduey, G. Liberati, G. Cumino, S. Caminada, A. Di Gianfrancesco, L. Cipolla
The joint characterization program consisted in the assessment of welded joints creep properties.
Mechanical and creep properties of weldments were measured both in the as welded and post weld heat treated conditions and proper WPS's were designed in a manner such that industrial production needs were satisfied.
Accordingly, welding techniques are highly needed for joining these materials with comparable high temperature properties [2].
Mechanical properties of both grades fulfil the ASTM requirements, Table 2.
The welded joints creep strength, of utmost importance for materials used in high temperature applications, must be assessed in order to obtain safety factors for the design and to ensure safe working conditions of the components.
Online since: October 2010
Authors: Cai Xia Liu, De Li Gong
Disorder and thermal of contact potential in the contacts affect the measurement signal and converting precision.
It will directly affect measurement signal and measurement accuracy [1].
This system satisfies the requirement of large quantities and remote spot signals acquisition and analysis with stable properties.
Based on an overall consideration of various factors, OP07 is selected as the operational amplifier.
Distributed capacitance of long-wire and insulation resistance variation due to humidity can affect micro-strain measurement accuracy when measuring micro-strain of large structures.
Online since: September 2021
Authors: Valeriy Kassov, Elena Berezshnaya, Nikolay Malyhin, Yana Antonenko, Kateryna Zubenko
It makes sense to expand the area of using the unique properties of these materials in mechanical engineering, particularly, in the manufacture of welded metal structures.
This is due to the peculiarities of its physicochemical properties [18, 20].
Investigation of the Technological Properties of the Protective Coating The behavior of the protection coat at heating was investigated using an OD-103 derivatograph, and the end products of pyrolysis were studied on a GACH-21.3 chromatograph.
The use of the developed protection coat allows to increase the efficiency of the open arc welding, to improve the surface quality and to ensure the preservation of the metallic structures specified mechanical properties, to eliminate the formation of local stress concentrators in the surface layer and, thereby, to eliminate the need to introduce additional technological operations for cleaning and grinding the surface.
Factors affecting adhesion of spatter: Study of spatter occurring during arc welding (2nd Report).
Online since: August 2012
Authors: Fa Feng Xia, Liang Miao, Chun Hua Ma
School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, P.R.
Microstructure of specimen film were observed by Tecnai-G2-20-S-Twin high respective transmission electron microscope, after being mechanical reducing and ion reducing on Gatan-600 double-ion reducing machine.
This is because when the ultrasonic wave was overpowered, the ultrasonic cavatitions affected the oriented deposition of AlN particles, caused the AlN content in the layer to decrease, and thus increase the abrasion.
The reason why the Ni grains fined during the deposition can be attributed to three factors: (1) The co-deposition of nano AlN particles in the layer provided a great deal of nucleating points for crystallization, and hindered the grow of the Ni grains. (2) Pulse current was applied in the experiments.
Ebrahimi F., The effect of deposition parameters on tensile properties of pulse-plated nanocrystalline nickel.
Online since: March 2010
Authors: Hui Hui Li, Yong Yang, Guang Yao Meng
Introduction Ti6Al4V alloy has been regarded as crucial material of modern aerospace industry because of its excellent mechanical properties [1].
However, the main factors that causes monolithic component distortion is redistribution of residual stress during material removal and low rigidity of workpiece.
The Johnson-Cook material law coefficients in Eq.1 are identified from high strain rate mechanical experiment using the SHPB method.
Because the acting spot of cutting loads is local and the affected region is very small, based on theory of SWINAN, it is equivalent that the loads on arc li are applied on arc li1 and li2 .
Sun: Chinese Journal of mechanical engineering Vol. 68-71 (2005), p. 117-122 (In Chinese) [5] Z.J.
Online since: April 2013
Authors: Jin Shin Ho, Ching Bin Lin, Zue Chin Chang, C.F. Hsiao
Hsiao1 1Department of Mechanical and Electro-Mechanical Engineering Tamkang University Tamsui, New Taipei City, Taiwan, Republic of China 2Department of Mechanical Engineering National Chin-Yi University of Technology Taiping City, Taichung County, Taiwan, Republic of China acblin@mail.tku.edu.tw Keywords: hot embossing; poly (methyl methacrylate); average molecular weight; number average molecular weight Abstract.
The embossing temperature, pressure, time, and procedure factors governing hot-embossing were also reported [7].
Table 1 The Average molecular weight and molecular numerical of PMMA micro-pattern as a function of the base width Conclusion The flow behavior of the softened PMMA into micro-cavity during hot-embossing is that the size of the micro-cavity will affect the average molecular weight and number average molecular weight.
Mechanical Industry Research Laboratories.
Properties of polymers, 3rd ed.
Online since: February 2011
Authors: Li Jun Wang, Dong Po Wang, Yu Liu
Ultrasonic surface rolling processing (USRP) is a surface nanocrystallization method developed recently, which can bring metal surface with superior properties.
Majzoobi et al. and Shivpuri Rajiv et al. have simulated the multi-shots case and discussed the influencing factors on peening residual stress [6,7].
Material Properties and Model Verification. 40Cr steel, which is often used as shaft material, is adopted for numerical simulation.
Material properties for 40Cr are: ρ (density) = 7820 kg/m3, E (elasticity modulus) = 210 GPa and υ (Poisson’s ratio) = 0.3.
The spindle speed affects the impact density.
Online since: August 2017
Authors: Samad Dadvandipour, Samad Nadimi Bavil Oliaei, Bahram Lotfi Sadigh
Different types of properties are assigned to these instances.
In fact these properties are assigned to the instances mother classes therefore these instances inherit assigned properties eventually.
These properties are called “Data properties” in ontology model.
Developed ontology model is including hundreds of classes, properties, and relations.
Wire deflection, discharge gap variation and lateral vibration of the wire are the main factors influencing KERF [4].
Online since: April 2017
Authors: Muhd Zu Azhan Yahya, Khuzaimah Nazir, Ahmad Fairoz Aziz, Abdul Malik Marwan Bin Ali, N.I. Adam, S.F. Ayub
Effect of Phenylene Diamine Antioxidant on Physico-Chemical Properties of Methyl Grafted Natural Rubber Polymer Electrolytes A.F.
The consequences of degraded MG30 is mainly devour the mechanical properties such as hardened, loss it elasticity and favourably to cracks.
The high similarity in chemical properties of both systems is maybe due to the undetected tiny amount of 0.5 wt.% 6PPD.
Chen, Porous polymer electrolytes with high ionic conductivity and good mechanical property for rechargeable batteries, J.
Noor, A method based on impedance spectroscopy to determine transport properties of polymer electrolytes.
Online since: February 2021
Authors: Shahid Akhtar, Sten Yngve Larsen
The effect of different processing parameters including dispersant type and amount, mixer type and mixing time, and different binder levels is investigated with respect to physical and mechanical properties.
All those interfacial properties affect macro-level material behaviour.
Retaining a high aspect ratio of the nanofibers, enabling the efficient transfer of the load to the nanofiber, is very critical toward an improvement of the mechanical properties of nano composites [28].
Endo, Mechanical and thermal properties of vapour-grown carbon nanofiber and polycarbonate sheet, Mat.Lett. 59 20053514-3520
Schulte, Influence of different carbon nanotubes on the mechanical properties of epoxy matrix composites- A comparative study, Comp.
Showing 17911 to 17920 of 26129 items