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Online since: April 2022
Authors: Zhi Guo Gao
Laser repair rejuvenates high-temperature mechanical properties of these expensive engineering materials.
Relevant material properties data is readily quotable in the previous literary sources
Subsequently, heat input optimization is necessitated to eliminate vulnerability of [100] dendrite growth region and reduce thermometallurgical factors for centerline cracking.
Effect of process parameters on the mechanical properties of Hastelloy X alloy fabricated by selective laser melting.
Influence of isothermal holding on the microstructure and mechanical properties of electron beam welded dissimilar Incone 718/ATI 718 Plus joint.
Online since: November 2025
Authors: Ling Yu Lucy Yu, Nikta Amiri
Various factors influence the integrity of steel structures, making damage predictions particularly challenging, especially with respect to environmental conditions.
Fatigue and environmental factors significantly affect the durability and performance of steel structures, underscoring the need for effective crack prevention [3, 4].
The material properties of the plate include a Young's modulus of 196.5 GPa and a density of 8000 kg/m³.
It remains unclear whether this interference is due to the material properties of the patch itself or its physical characteristics, such as thickness.
Further studies are needed to explore how these factors influence the PZT-SLDV signal.
Online since: May 2007
Authors: Bo In Noh, Jong Woong Kim, Sang Su Ha, Dae Gon Kim, Ja Myeong Koo, Seung Boo Jung
Thermo-mechanical reliability of the solder bumped flip chip packages having underfill encapsulant was evaluated with thermal shock testing.
The solder joints in a flip chip package serve as a mechanical mechanism for resisting the thermal deformation induced by the coefficient of thermal expansion (CTE) mismatch between the silicon die and substrate.
Therefore, this study was conducted to understand the thermo-mechanical behaviors of the flip chip package with Sn-3.0Ag-0.5Cu and a specific underfill encapsulation employing the thermal shock testing.
Some Cu6Sn5 particles were distributed within the solder, and this kinds of IMC particles were considered to be one of the influential factors controlling the mechanical properties and reliability of the solder.
This crack is not one shown in the case of solder joints without underfill, therefore, this crack formation should by affected by the thermo-mechanical properties of the underfill encapsulant.
Online since: August 2012
Authors: Yi Liang Zhang, Shuan Wei Cui, Shi Lei Zhao, Cui Cui Wang
Therefore, proper method of stress-strain monitoring of the key components while construction of steel structure workshop, become particularly important factor to ensure the safety of construction process.
Main material of steel beam Table 1 Chemical composition and mechanical property of Q235B The steel beam which was monitored in this paper was made of Q235B.The chemical composition and mechanical property of Q235B are listed in Table 1.
The main monitoring parameters (1) Considering the strength factor, vertical direction displacement value should not more than 10mm according to the design requirement
(3) Deflection measurement method: measuring deflection values real-time while dismantling each beam, the need for, because of the position of each beam is very high, build a support frame also easily affected by the interference of construction and other factors, so it is to be adopted corresponding to each point drape a lead fall to deliver the deflection change, which cause transfer deflection not synchronous, accounting calculation, relative error time less than 50ms, therefore, the scheme is feasible.
According to the mechanical characteristics analysis of the structure of steel beams, suffer uneven loading, which will bending stress and torsional stress, so combined two beams form the closed thin section range, to ensure the bending capacity and reduce the influence of torsional stress
Online since: January 2013
Authors: Yong Ning Bian, Jing Bin Zhu, Cong Ling Li
China aybian@dlut.edu.cn Keywords: Steady Flow, Dimensions, Wave Factor, Equal Pumping Power, Mass Transfer Abstract.
The results showed that the wavelength and amplitude of the wavy-walled tubes obviously affect the fluid flow and mass transfer characteristics.
Many investigators devoted their efforts to study on the mechanical properties of channels with different shapes.
Then, in order to investigate the combined effects of the wavelength and the amplitude, the relationship between the wave factor Fw, defined as formula (1), and the Rec as well as the critical friction factor fc corresponding to the Rec are shown in Fig.4(c) and (d), respectively.
The Sherwood number Sh increases for increasing the wave factor Fw at the same Re.
Online since: December 2013
Authors: Fu Kou Lv, Bao Lin Liu, Wei Jie Li
Nanoparticles in solution offer unique electrical, mechanical and thermal properties due to their physical presence and interaction with the state of dispersion.
The formation and growth of ice crystals during cooling and warming was affected by many factors including concentration, temperature, impurities, mass and heat transfer in the system, and so on.
Nanoparticles in solution offer unique electrical, mechanical and thermal properties due to their physical presence and interaction with the state of dispersions [20].
Selective freezing of target biological tissues after injection of solutions with specific thermal properties.
Properties of polymer–nanoparticle composites.
Online since: June 2014
Authors: Bin Hu, Xiao Ning Zhang
Industrial CT scan imaging process is very complex, many factors affect imaging quality and CT hardware platform itself is subject to great difference.
Yue-hua Duan[17] analyzed the influencing factors of Fourier series representing 2D profile accuracy of aggregates on this basis.
Industrial CT Technology-based Asphalt Mixture Virtual Mechanical Test Method Some scholars have carried out over a number of researches on the finite element virtual mechanical test of homogeneous asphalt mixtures, to find these virtual mechanical test methods subject to significant defects.
Mohammad, et al: Application of Mixture Theory in the Evaluation of Mechanical Properties of Asphalt Concrete.
Yu: Evaluating the Volumetric Properties of Asphalt Mixtures with Digital Image Processing Technique.
Online since: November 2011
Authors: Jia Kuan Xia, Yi Biao Sun, Ya Nan Jing
The direct-drive ring permanent magnet torque motor is easily affected by parameters changes and the load torque disturbances, which reduces the servo performance of the system.
Compared with the motor of the traditional drive way, the load is directly driven the direct-drive ring permanent magnet torque motor, which has removed the middle transmission link and eliminated the nonlinear factors of the mechanical transmission characteristics in order to obtain a high position precision and good dynamic performance [1].
In [4], the control of multi-objective genetic algorithms is proposed, because the motor is affected by the load disturbances and parameters changes.
Sliding mode variable structure control has invariance property so the best control effect can be obtained.
Super twisting algorithm phase plane Conclusion The performance of the direct-drive ring permanent magnet torque motor servo system is easily affected by parameters variable and the load disturbances and so on uncertainties factor, the traditional sliding mode control had improved the servo system robustness, but which easily brought chattering.
Online since: May 2012
Authors: Ren Chao Yang, Yi Jun Li, Tao Zhang, Yan Long Wang, Ai Ping Fan
According to the fracture mutual cutting relation and inclusion analysis of the fracture fillings, the structural fractures are mainly development in Yansha period and Himalayan period[9] which controls the group, shape and mechanics properties, but the development level of fractures in different groups is in the control of internal factors.
This may has something with mechanical property of mudstone.
Therefore, it becomes one of the favorable factors to the gas accumulation.
Analysis of Main Control Factors on Capacity of Gas Well in the East Area of Sulige Gas Field, Ordos Basin[J].
Analysis on Productivity Influential Factors in Sugeli Gas Field[J].
Online since: May 2020
Authors: Dmitriy P. Il’yaschenko, R.Yu. Nekrasov, M.V. Deneko, V.E. Ovsyannikov, U.S. Putilova
The durability of such parts depends on the physical and mechanical properties of the material and microstructure.
The shape of graphite inclusion affects the operational properties of products.
The unfavorable factors of operation are the uneven operation’s mode (more intensive use in seasons without negative temperatures) and the fact that the machines are often operated in remote areas.
An important factor that affects the structure and properties of the diffusion layer is the possibility of oxidation for silicon and manganese base cast iron.
Krishtal, Structure and properties of alloys treated with laser radiation / M.
Showing 12631 to 12640 of 26166 items