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Online since: November 2014
Authors: Aidah Jumahat, Nurhidayah R. Zamani, Rosnadiah Bahsan
Epoxy resin is one of the most important polymers due to its outstanding mechanical, thermal and also electrical properties [1].
Dynamic mechanical analysis has become more popular because of their significant properties and to provide information about materials such as viscoelastic properties in particular polymers.
Agglomeration of nanoparticles (usually in micrometer size clumps) often gives bad effects on the thermal and mechanical properties of the epoxy resin.
Dynamic mechanical analyzer was used to analyze dynamic mechanical properties of the epoxy resin with temperature range of room temperature to 180°C.
Shervin, The effect of nanosilica on mechanical, thermal and morphological properties of epoxy coating, Progress in organic coating, 75 (2012) 543-48
Online since: July 2013
Authors: Rudolf Kawalla, Friederike Schwarz, Katja Lange, Lutz Krüger, Stephan Reichelt
The aim of this work is to show aspects of ARB and their influence on the mechanical properties for the conventional magnesium alloy AZ31.
Mechanical properties (in RD) of the initial materials and after one ARB pass with varying parameters (ARB process temperature and reduction).
A comparison of mechanical properties before and after ARB is presented in Fig. 6.
After one ARB pass, TRC material achieves nearly the same mechanical properties of TRC&HT but the related bond strength is smaller (0.26).
Fig. 7 summarizes the compressive mechanical properties of TRC&HT depending on ARB passes.
Online since: November 2013
Authors: Yu Hua Yi, Liu Jie Guo
This paper mainly describes the properties of mechanical properties, heat resistance, and dynamic mechanical properties of polyurethane elastomer based on MDI and diamine chain extenders.
Mechanical properties.
Polymer 2003; 44: 2711-9. ], improving mechanical properties of the polyurethane elastomer.
For instance, in the development process of the PU tires, high-temperature resistance performance is one of major factors to affect practical application of the PU tire.
Fig. 2 TGA thermograms of the samples [TPU I-IX] Dynamic mechanical properties.
Online since: September 2009
Authors: Xiao Qin Bi, Jian Ye Zhu, Jie Wang
The sintering temperature and the heat-insulation time affect the bending strength obviously.
The microstructure was observed on the XTB-1 Zoom stereo microscope and the QUANTA2000 Scanning electronic microscope, and the mechanical properties were tested on the CMT4504 Electronic multiple-functional testing machine and the HR150 Rockwell hardness tester.
The properties are shown in Fig.7 and Fig.8(the number of sample is shown in Table 1).
It convers from the mechanical state into the 60 70 80 90 100 110 1234 No.
The content of Cr affects it greatly, but the content of WC hasn't great affects Factors Levels 1 2 3 Cr(wt%) WC(wt%) T(°C) t(min) 5 10 15 3 6 9 580 620 680 5 8 12 d c a b on it.
Online since: August 2011
Authors: Hiroshi Sugimori, Noritaka Kawasegi, Noboru Morita, Min Chao Xue
These results indicate that oxidation is an important factor in determining the texture effect for machining aluminum alloy.
Introduction The addition of a texture to a solid surface enables control of the tribological, optical, and mechanical properties of the surface [1].
A surface texture results in a low-friction surface due to the generation of hydrodynamic pressure, storage of lubricant, and other factors [2].
These results indicated that the atmosphere around the cutting region was an important factor in determining the texture effect, and the presence of oxygen affected the machinability of the textured tool.
These results indicate that the atmosphere affects the frictional characteristics.
Online since: March 2014
Authors: Patrick Grad, Eberhard Kerscher, Daniel Spriestersbach
Stress intensity factors determined by this method are shown in Fig. 4.
This means that at the same stress amplitude TiN inclusions with small stress intensity factors are as harmful as bigger AlCaO inclusions with higher stress intensity factors.
Summary The chemical compositions of non-metallic inclusions affect their mechanical behaviour at cyclic loads.
Oguma: Characteristic S-N properties of high-carbon-chromium-bearing steel under axial loading in long-life fatigue.
Andrews: Stress Fields around Inclusions and Their Relation to Mechanical Properties.
Online since: September 2015
Authors: Pavol Hvizdoš, Richard Sedlák, Ján Kľoc, Ján Balko, Peter Monka, Sergej Hloch, Martin Fides
The aim of this paper is to compare various types of PMMA based bone cements and their wear and mechanical properties obtained in two testing environments (saline and air).
Values of these properties for all materials varied in a small range.
Samples immersed in saline for different periods of time showed very similar values of mechanical properties to those obtained for freshly made samples.
The present dosages of antibiotics (around 1%) are sufficiently low so that their possible elution does not affect the measured properties.
Hvizdoš et. al., Local Mechanical Properties of Various Bone Cements, Key Engineering Materials, 592-593 (2014) 382-385.
Online since: September 2013
Authors: R.G. Rangasamy, Prabhat Kumar
Intergranular stress corrosion cracking and hot cracking are additional factors to be addressed for the welding of stainless steel components.
Intergranular stress corrosion cracking and hot cracking are additional factors to be addressed for the welding of stainless steel components.
Table 1 Chemical and mechanical properties of 316LN & 304 LN materials Chemical composition (by % of weight) Mechanical Properties: Element Grade 316LN Grade 304 LN Sl.
The identification mark was placed in such a way that it does not affect the function or quality of the item being identified.
NDE calibration blocks produced for evaluation of welds are to be preserved and supplied along-with the item QA during fabrication Welding Tolerances: The design of weldments shall lead to minimum stress concentration factors and high degree of reliability.
Online since: September 2013
Authors: V. Balasubramanian, G. Balachandran
Factors such as prior austenite grain size, promotion of fine lath marteniste and even carbide distribution may be required for high temperature properties.
This base steel has been modified by some alloying additives targeted at improving corrosion or mechanical properties.
These steels have superior mechanical [ultra high strength levels] properties and their corrosion properties comparable to that of 304 stainless steels.
Martensitic and PH grades are control cooled and are given a soft annealing treatment at every stage of its processing. 5.0 Mechanical Properties Stainless steels give a wide range of mechanical properties.
Fig.12 Typical high temperature mechanical properties of some of stainless steels [18,19].
Online since: April 2020
Authors: Na Wang, Yun Hai Yu, Jin Guo Wang, Jun Yan Liu
Magnesium and its alloys have excellent mechanical properties and biocompatibility.
The main factors that affect the axial shortening rate are the structural form of the bridge reinforcement and the connection position of the bridge reinforcement.
The main factor that affects the bending stiffness is the connection form of bridge reinforcement and support ring.
Then combined with polycaprolactone complex filament, PPDO/PCL braided self-enhanced degradable vascular stent with controllable control of both supporting and degradation properties was constructed, and the physical and mechanical properties, degradation properties and biological safety of the new stent were explored through in vitro and in vivo experiment [16].
Microstructure, mechanical properties, in vitro degradation behavior and hemocompatibility of novel Zn–Mg–Sr alloys as biodegradable metals.
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