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Online since: June 2022
Authors: Hui Wang, Dong Xu Shao, Yan Bai
However, they are not conducive to the practical application of microcapsules due to poor mechanical and thermal stability [3].
Organic/inorganic composite capsule wall can give the advantages of mechanical and thermal stability of inorganic materials and packaging ability of organic materials, and optimize the performance of phase change microcapsules [4,5].
The agglomeration between microcapsules not only affected the performance of microcapsules, but also made microcapsules more vulnerable to damage in the process of practical application, resulting in oil leakage.
Therefore clove oil microcapsules can be preserved at room temperature from the point view of economic factors.
Zhou, Preparation and barrier properties of the microcapsules added nanoclays in the wall[J].
Online since: October 2007
Authors: Leo A.I. Kestens, H. Landheer, S. Erik Offerman, R.H. Petrov
This determines the final microstructure and thereby the mechanical properties of the material.
The energy of the interfaces depends, among other factors, on the difference in crystallographic orientation between neighbouring grains and on the inclination angle of the interface between the two crystals.
Unfortunately, duplex stainless steels also contain carbon, which tends to form carbides with the chromium present at austenite grain boundaries and may affect the nucleation of the ferrite phase.
For the EBSD-measurements the sample was prepared by mechanical (down to 1µm) and electrolytic polishing (electrolyte A2 (Struers), flow rate 13, 25 s, 35 V).
Online since: May 2014
Authors: Crhistian Raffaelo Baldo, Diogo Cesar Borges Silva
Improvements from the distinction of smaller density differences to the faster speed of measurements made the technology suitable for non-destructive inspection of mechanical components and parts, such as security-relevant inspections of helicopter or turbine blades, and inspection of casted aluminum parts [1].
For investigating the connecting rod material, a XCT scanner with the properties listed in table 1 has been used.
The proper selection of the magnification factor depends on the part to be scanned, which has to fit entirely on the detector area.
When scanning dense materials, which require higher penetrating power, loss of contrast or saturation of the detector may be also a factor.
For dimensional control, however, the remaining parasitic effects drastically affected the point cloud representativeness.
Online since: March 2007
Authors: Shigeo Saimoto
Dynamic Evaluation of Strength-Structure Properties by the Determination of Activation Volume and Mean Slip Distance S.
Saimoto Mechanical and Materials Engineering, Nicol Hall, Queen's University, 60 Union Street, Kingston, ON, K7L3N6, CANADA.
け, i% , T and しKK are the usual symbolic terms for Burgers vector, shear modulus, shear stress, shear strain and strain-rate, test temperature and the Stage II slope with l as the compensating factor relating the model そm (with l = 1) to the true そ.
Our recent revelation that the mobility of point defects generated by plastic deformation greatly affects the dynamic dislocation-defect interaction [3] has motivated us to examine using the above plots at ambient temperatures where most metal processing and fabrication of metal products are carried out.
The yield stress j0 is defined at 0.02 % tensile strain and the corrected shear stress is given by (j-j0)/M where M is the Taylor factor [1].
Online since: August 2014
Authors: Wei Zhang
For exceeding the current national chloride sand processing generally uses the following methods: A: natural sand placement method ; B:freshwater flushing method ; C:the mechanical method ; D: mixed with rust inhibitor ; E:mixing .
From the above comparison that the five methods ,mechanical methods one-time investment is large, natural stacking method to save money but time-consuming, but it costs money to save time mixing rust inhibitor, and the most effective way is to freshwater flushing method , saves time and relatively economical , this method is also used by many manufacturers .
Sand used in the preparation of concrete , construction projects should give special consideration to the impact the safety and durability factors to ensure project quality and ensure the safety of sea sand applications .
Untreated sand, reclaimed water sand and the water sand concrete specimens are shown in Table 1 Table 1 C25 Strength Comparison C25 sea sand concrete Standard test pieces Untreated sand (N/mm2) Reclaimed water sand (N/mm2) River sand (N/mm2) Conservation Days 7 14 28 7 14 28 7 14 28 Experiment 1 18.2 23.1 25.1 17.5 22.3 25.3 17.8 22.5 25.6 Experiment 2 19.1 23.6 25.3 16.9 23.1 25.6 17.3 22.6 25.4 Experiment 3 18.6 23.5 25.4 17.3 23.6 25.4 17.6 22.9 25.5 Average compressive 18.6 23.4 25.3 17.2 23.0 25.4 17.6 22.7 25.5 The test results can be seen, whether the chlorine treatment significantly affect the strength of the concrete.
Coastal sand problems caused by the use and study of Sichuan Building [J] 2006. 6:129-130 [8] Wei Zhang Research on compressive properties of sea sand concrete Advanced Materials Research (ISSN: 881-883), [J] 2014 (1) 1221-1224
Online since: June 2013
Authors: Zhi Gao Xu, Chun An Ai, Qiao Wang
Ultrasonic testing signal transmission with all kinds of information about the specimen defect properties (state and performance of defect, tissue of the material etc.), but because the signal is affected by noise in incentive, transmission and detection process, the interference to the subsequent processing signal trouble, even when serious overwhelms signal, resulting in false detection and missed detection of defects.
The continuous wavelet or wavelet analysis is composed of function family generated through extension and translation, as the scale factor, as a translation factor.
China Mechanical Engineering, 2005, Vol.16 No. 3:239-242 [15] Nello Cristianini, John Shawe-Taylor.
The Mechanical and Electronic, 2010, No. 4: 36-39
Online since: September 2013
Authors: Hong Jun Wang, Xiang Jun Zou, Guo Gang Huang, Yan Chen
Motion control’s mathematic models for the picking manipulator were analyzed according to drive motor performance for the body structure, and then the partial differential equations were transformed into the ordinary differential equation easily solved by Modelica with the Laplace transform, mechanical motion simulation was realized.
But the present statue of picking banana is still rest on the phase of relatively backward artificial mode, of which the disadvantages contain larger labor amount; lower efficiency and higher picking costs, as well as bringing body hurt to people working at picking operation, injury to banana epidermis, and affecting seriously the banana harvest quality.
Considering the aim of picking bananas manipulator is to reduce labor intensity, avoid complex motion control and seek simple structures, but requiring a certain degree of stiffness and strength properties, Fig. 1 is the structural diagram of picking bananas manipulator.
the Mathematical Model of a Driver Motor A DC servo motor possesses simple physical structure, the main factor of infecting its running performance is inductive potential.
Online since: February 2014
Authors: Jian Gang Tang
Many schools have been teaching experiments and laboratory construction in the first place, due to restrictions such as school funding experiments, laboratory space and equipment factors, experimental teaching and can not achieve the desired results and the quality of experimental teaching affected.
communications, integrated circuits, software tools, models of human behavior, environmental models, etc.); Elements and components and technology (memory, display, LAN, microprocessors, database management systems, digital-structure modeling and simulation tools, test equipment, etc.); System-level technology (computer systems, human-machine interface, remote communications, WAN, computer image generation, etc.); Application-level technology (manufacturing process simulation, modeling and simulation, such as engineering design); Integrated simulation environment technologies (prototyping, planning, design and manufacturing, training and preparing, testing and evaluation, etc.). 3.2 Network used in simulation systems Computer networks, communication networks, transportation networks, power grids, water supply networks, food supply networks, banking and financial systems, oil pipelines, gas pipelines network, control network, a large number of real complex networks are small-world and scale-free properties
Computer networks, mechanical, chemical, electrical and electronics, the purpose of all these simulation software is designed for engineering design applications, and they all have fully functional.
For example, the computer network curriculum can design a network environment simulation includes computer network equipment, switches, routers, firewall; Mechanical Design courses can design four-bar mechanism, sports gear mechanism, cam mechanism simulation system; Chemical process simulation to design synthetic ammonia production process.
Online since: July 2017
Authors: Xiao Dong Wang, Zheng Xu, Qing Qing Zhang, Ping Zhu
The quality of droplet dispensing, including the volume consistency and positioning accuracy of micro-droplets, will directly affect the assembly performance of connection parts and even the working function of the integrated system.[1,2] However, there are various factors, such as small connecting space, nanoliter-scale volume, light-weight, particular surface properties of droplets, that make it much difficult to the detect the dispensing quality of single microdroplet effectively.
China Mechanical Engineering, 20. 22. (2011) 2513-2519
China Mechanical Engineering, 6. 26 (2015) 789-793
Online since: May 2023
Authors: Mohd Suhairil Meon
Another important factor in determining the damage evaluation of LVI laminates is delamination or out-of-plane damage.
The material properties of the laminates and cohesive layers are listed in Table 3.
Table 3: Mechanical parameters of UTS50/E51 UD composite and cohesive material [4].
The philosophy of the adopted failure initiation criteria as well as the progression law applied to the laminate affected the overall quality of the results.
The percentage difference, when compared to the experiment, is around 7% due to incomplete information about certain material properties and geometry.
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