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Online since: December 2018
Authors: Veronique Massardier, Michel Perez, Gwenaelle Meyruey
Characterization and Modelling of the Precipitation Sequence of an Al-Mg-Si Alloy with Silicon Excess for the Prediction of the Mechanical Properties during Ageing V.
Namely, the silicon excess affects the size, number, density and distribution of the b’’ precipitates and reduces their Mg/Si ratio.
However, the decrease in mechanical strength after the peak (i.e. the over-ageing) occurs much more rapidly in the case of the High Si alloy.
It can be reminded that the classical relation used in KWN model for the nucleation rate is: dNdt=N0Zβ*exp-∆G*kbT1-exp⁡-tT with N0 the nucleation site density, Z the Zeldovitch factor, β* the condensation rate, T the temperature, t the time and kbthe Boltzmann constant.
It gives access to the mechanical properties of the overaged alloy with a good accuracy.
Online since: October 2015
Authors: Prasert Wirotcheewan, Somjai Peanprasit
The New Design of Fish Cake Making Machine Prasert Wirotcheewan1, a * and Somjai Peanprasit1, b 1 Department of Mechanical Engineering, Rajamangala University of Technology Phra Nakhon, Bangkok 10800, Thailand aprasertwirot@rmutp.ac.th, bsomjai@rmutp.ac.th Keywords: Fish cake, Design, Machine Abstract.
The results from the survey reveal that with the property of our fish cake making machine, which can accelerate the preparation of raw fish cake with consistent size, the average user satisfaction score is more than 70%.
In the design section, all factors affecting on this machine include the size of machine that must be suitable for operation, light weight, and free of rust [4].
Nisbett, Shigley’s Mechanical Engineering Design, ninth ed., McGraw-Hill, Singapore, 2011
Online since: January 2015
Authors: Liang Bo Ji, Qin Xiang Xia
The thermal properties of material were defined.
It is influenced by the factor of temperature.
A numerical analysis of interface damage effect on mechanical properties of composite materials[J].
Numerical evaluation of bulk material properties of dental composites using two-phase finite element models[J].
A numerical analysis of interface damage effect on mechanical properties of composite materials[J].
Online since: July 2012
Authors: Kim Yeow Tshai, Michael Johnson, Hui Leng Choo, Shuguang Li, Park Hinn Chan
The materials properties, shown in Table 1, were abstracted from the 1st WWFE.
Depending on the property sought, mechanical properties of the selected materials are determined from extensive experiments, with custom-made specimens and designated tests [2].
The properties of steel pipes widely used in oil and gas industry (grade API 5L X60) was selected in the analysis.
Table 1: Mechanical properties of composite repair [1] Table 2: Mechanical properties of API 5L X60 steel [12] Design Conditions of Repair System Limit analysis are used to determine the acceptable design conditions and to optimize the repair system.
In addition, orientation of the multiple-angle laminates significantly affected the final properties of the repaired riser.
Online since: October 2014
Authors: Gai Fei Peng, Juan Yang, Jing Yan Wang
Physical properties of coarse aggregates were shown in Table 1.
Properties of Recycled Coarse Aggregate and Its Influence on Recycled Concrete.
The Characteristics of Mechanical Properties of Recycled Aggregate Concrete and Influencing Factors [D].
Mechanical Properties of Recycled Aggregate Concrete with Fly Ash and Slag.
Concretes with Aggregates from Demolition Waste and Silica Fume, Materials and Mechanical Properties.
Online since: December 2013
Authors: Xin Yuan Liang
Introduction The oil, which mainly refers to lubricating oil and hydraulic oil here, is the blood of mechanical device.
Usually, the oil analysis is primarily for analysis of metal particles, pollution measurement and analysis of some physical and chemical properties.
Therefore, it is necessary to develop an accompanying style of oil instruments for modern mechanical systems.
On-line monitoring is recent research hotspot of oil analysis in the mechanical fault diagnosis [2, 3].
Through analyzing the various factors of affecting the sensor, the corresponding solution is proposed.
Online since: October 2010
Authors: Feng Chi Wang, Peng Fei Li, Xiao Peng Ye
The mixing of rubber powder will change properties of CS [9].
Three specimens were tested for each property.
When rubber content was 10%, the mass loss factor was least.
After that content, loss factor was significantly increased.
Fig.4 (b) is contrast curve in the conditions of concentration 20%. d = 550μm RCS still maintains good mechanical property after SCFT cycles in the high concentration corrosion solution.
Online since: July 2011
Authors: Hong Yu Chu, Zhi Jiang Xie, Li Dan Zhou, Qin Liu, Xu Xu
Long-term field data and research indicate that the optical surface flaw is one of the important factors which affect the device’s load capacity [1] [2][3].
However, the shortcoming of this approach is obvious: because the subjective factors of human, the size of the flaws can not be quantify detected, the detection rate is slow, the labor costs high and the observers need to be trained.
But the factors such as the observer's experience, testing rate and other facts still limit the application of using visual method to detect flaws on precision optical surface.
This method reduces the standard board of defeats the production requirements, and can increase 15 to 30 times the visual acuity, but the employer saw the virtual image inevitably affected by human factors [16].
Advantage of this approach is the type of the flaws is able to be identified, and the scattering properties of the flaws can be researches in depth.
Online since: June 2020
Authors: Mohamad Zaki Abdullah, Tengku Amran Tengku Mohd, Puteri Sri Melor Megat Yusoff, Putri Nadzrul Faizura Megat Khamaruddin, Muhammad Shafiq Mat Shayuti, Rahida Wati Sharudin
The deviation was due to the exclusion of factors such as PC particulates geometry, size, and dispersion in PP matrix.
Other factors that have been cited to influence thermal conductivity in composites are the crystallinity and crystal chain direction [8].
Additional factors include; the morphology, density, molecular chain orientation, and crystallinity.
These traits then affect the inherent properties of a polymer blend such as thermal conductivity as well as mass and heat permeability [24].
Nielsen, Dynamic mechanical properties of particulate‐filled composites, J. of Appl.
Online since: November 2013
Authors: Lian Fa Yang, Yu Lin He, Ning Hua Wang
The accuracy of constitutive equation is a key factor in the research of material mechanism, finite element simulation accuracy and forming failure.
The establishment of constitutive equation is significant for the research on material properties, material plastic forming mechanism and forming failure.
In 2010, Zhan et al. [2] cut standard parent specimens and mixed material specimens, which were divided with weld and heat affected area, from welded tube for the tensile test.
The constitutive equation obtained from this method is more accurate to reflect material properties than the tensile test.
The theory analysis can accurately determine constitutive equation, but the using of assumptions will affect the precision of constitutive equation in the process of research.
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