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Online since: February 2020
Authors: Rajesh Kumar Prusty, Bankim Chandra Ray, Dinesh Kumar Rathore
Laminated FRP composites exhibit superior in-plane mechanical properties, which are governed by the properties of the fibre phase.
However, the extent of reduction in mechanical properties was found to be significantly higher for CNF-GE composite than control GE composite.
This higher loss in mechanical properties was attributed to the increased tensile thermal stress in the interfacial polymer promoting interfacial slippage.
Ye, Cryogenic properties of SiO2/epoxy nanocomposites, Cryogenics. 45 (2005) 450–454
Eisenberg, Dynamic mechanical study of the factors affecting the two glass transition behavior of filled polymers.
Online since: February 2011
Authors: Chao Ye, Jing Yi Wang, Yu Teng Wang, Song Tao Gao, Fang Wang
In multi-layer work surface panels, different VOCs have different chemical and physical properties which will affect their transport properties and storage properties.
In this paper ambient temperature, relative humidity (RH), and air ventilation rate(ACR) and the board’s layup sequence are considered as the main factors[2,3,6] that may affect the emissions properties of VOCs from wooden fibre synthetic material when it is actually used in a building.
The diffusion coefficient (D) determines the rate of diffusion of a VOC through the material and is usually a function of several factors such as material type, compound properties, temperature, as well, in some circumstances, as the material-phase VOC concentration.
All these factors can be evaluated by inputting date, plotting curves, and analyzing result in spreadsheet.
Summary In multi-layer work surface panels, different VOCs have different chemical and physical properties which will affect their transport properties (e.g. diffusion coefficient) and storage properties (e.g. partition coefficient).
Online since: September 2013
Authors: Ping Xue, Yao Li, Jun Jie Yang, Wu Xin Yu, Shu Hua Peng, Zhi Jiang Zuo
Effects of Impulse Current on Mechanical Behavior of Ti and Ta Yao Li1,a, Junjie Yang1,b, Ping Xue1,c, Wuxin Yu1,d, Zhijiang Zuo1,e and Shuhua Peng1,f 1School of Electrical-mechanical Engineering, Jianghan University, Wuhan, 430056, China alylly111@sina.com, bjj_yang285@163.com, c851770954@qq.com, dyuwux@126.com, edongfc2001@sohu.com, f644407758@qq.com Keywords: Electro-plastic effect; Metal Ti; Metal Ta; Mechanical properties Abstract.
In this paper, pure metals Ti and Ta were used to study the effects of impulse current on their mechanical properties.
It is not only related to comprehensive factors of experimental conditions (including electro-magnetic field intensity, current density, electric voltage, deforming temperature, frequency of impulse current and strain rate), but also to the microstructure and crystal structure in metals[6-7].
In this paper, pure metals were adopted to study electro-plastic effect of metals, for they had less interference factors to structure.
Figure.2 Influence of impulse current on the tensile strength and elongation of Ta Figure.3 Influence of impulse current on the tensile strength and elongation of Ti It illustrated from Figure 2 and Figure 3 that impulse current affected the mechanical performance of metals.
Online since: July 2014
Authors: Sheng Zhang, Lu Hui Yan, Lin Zhu, Ling Feng Li, Yu Wu Zhang
Experiment Research on Mechanical Properties and Penetration Performance of UHMWPE Fiber Concrete Yuwu Zhang, Luhui Yan, Lin Zhu, Sheng Zhang, Lingfeng Li Basic Education School of Commanding Officer, National University of Defence Technology, Changsha 410073, China zyw_86@126.com Keyword: UHMWPE fiber, concrete, mechanical properties, penetration performance, experiment Abstract.
The basic mechanical properties and penetration performance of a new type of fiber concrete reinforced by UHMWPE fiber were experimental investigated.
The influences of fiber addition, forms at fiber ends, fiber dimensions and other factors on anti-penetration performance and mechanism of the SFRC are investigated [5-7].
Ultra high molecular weight polyethylene (UHMWPE) is a new kind of ballistic fiber [9] which has excellent properties of impact-resistance.
Mechanical Properties Primary materials and Mix design of concrete.
Online since: November 2011
Authors: Xian Zhang, Sheng Li Tu, Zhang Feng Zhao, Guo Xing Tao
In the multi-pass weld, the welding distortion is also affected by the welding sequence and other factors.
Because of the large amount of factors affecting the welding distortion, it is very difficult to predict welding distortion in actual production process.
Physical Properties of Materials.
As the various mechanical properties of welding seam metal and basic materials, especially the different yield strength, they were defined by two different materials in the mechanical calculation.
The same as the temperature calculation, materials of high temperature mechanical properties in the document was used.
Online since: November 2022
Authors: Poppy Puspitasari, Triyono Triyono, Jamasri Jamasri, Hendrato Hendrato
Mechanical Properties and Microstructure Evolution of Double-Sided Friction Stir Welding AA6061-T6 Hendrato1,a*, Jamasri1,b, Triyono2,c and Poppy Puspitasari,3,d 1Department of Mechanical and Industrial Engineering, Gadjah Mada University, Indonesia 2Department of Mechanical Engineering, Sebelas Maret University, Indonesia 3Department of Mechanical Engineering, State University of Malang, Indonesia ahendrato@mail.ugm.ac.id, bjamasri@ugm.ac.id, cTriyonomesin@uns.ac.id, dpoppy@um.ac.id Keywords: Double-side FSW, Rotational Speed, Mechanical Properties, Microstructure Abstract.
Porosity defects in welded joints can reduce toughness, fatigue, and ductility and cause changes in the microstructure that result in changes in the mechanical properties of the weld [7].
Thick plate FSW using an effective tool significantly affects the weld mechanical properties, grain size, and defect compared to thin plate FSW [11], [12].
Several studies have reported the relationship between welding parameters, mechanical properties and microstructure of double-sided FSW.
Mechanical properties tests The mechanical properties of the double-sided FSW were assessed using hardness measurements and tensile tests.
Online since: January 2015
Authors: Dong Dong Liu, Yang Song, Yan Jun Meng, Zhong Qi Dong, Bing Wang
The mechanical properties and aging of 65Mn were investigated with the controlled rolling and cooling process of spring steel.
Introduction 65Mn belongs to the manganese spring steel, products widely used, mainly used in the manufacture of cushion spring, spring plunger pump speed, shock absorber and a clutch spring, brake spring [1-3]. 65Mn wire rod with excellent comprehensive properties, such as mechanical properties (especially the elastic limit, ultimate strength, than the yield strength ratio), elasticity attenuation resistance performance (i.e., anti sagging performance, also known as anti relaxation properties), fatigue resistance, hardenability, physical and chemical properties (heat resistance, low temperature resistance, corrosion resistance etc.).
Experimental results and discussion The mechanical properties of 65Mn steel were tested after using the new rolling process, the results in Table 3 and table 4.
Spinning temperature directly affects the mechanical properties of wire rod.
(2) Of large size rod 65Mn mechanical properties as compared to the tensile strength, elongation and contraction rate section and small size, was gradually declined
Online since: July 2018
Authors: Rattanaphol Mongkholrattanasit, Nareerat Kamlong, Nicha Thiangtrong, Tongsai Jamnongkan
It was found that the ZnO NPs have affected to the morphological, water absorbency, mechanical and antibacterial properties of biocomposite films.
On the one hand, the PLA has low mechanical properties, i.e., brittle and low flexibility, and thermal properties.
The mechanical properties were determined by using a Testometric model Micro 350, England.
Fig. 4 shows the mechanical properties of PLA and PLA/ZnO NPs films.
It was found that the ZnO nanoparticles have directly affected to the swelling ratio, surface morphology, mechanical properties, and antibacterial properties.
Online since: October 2014
Authors: Zhi Hua Wu, Su Li Xing, Qing Zheng, Zheng Shen, Jun Tang
It was observed that the chopped strand mats enhanced effectively the mechanical properties of the composite panels manufactured by Hand Lay-up method, while the mechanical properties of the composite panels manufactured by VIMP decreased.
The mechanical properties of composite highly depend on the properties of fibers and the manufacturing process.
The model was used in the analysis of the mechanism of toughening and the influence of some main factors, as well as in the prediction of the inter-laminar toughness increment ΔGIC.
Mechanical properties testing.
Compared with the mechanical properties of the composite panels manufactured by hand lay-up technique, the mechanical properties of those by VIMP were relatively better whether adding chopped strand mats or not, although the addition of chopped strand mats narrowed this gap of mechanical properties.
Online since: February 2018
Authors: David Pytlík, Vlastimil Bilek
Some effects of self-curing on the mechanical properties of High Performance Concrete (HPC) are discussed in this paper.
The mechanical properties of HPC don´t show an increase, oppositely, microcracks occurrence can reduce some properties - flexural strength, fracture properties and also durability.
Experimental Details The objective of this paper is to test the effects of two different types of internal curing on the mechanical properties of concrete.
The last group is one with chemical admixtures which improve the mechanical properties of concrete.
However, it is necessary to improve the methodology of the comparisons of individual results and the effect of internal curing on other factors influencing concrete.
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