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Online since: March 2006
Authors: Hong Gun Kim, H.K. Lee, G.E. Yang
They are related to the polymer properties and surface roughness of the etched mold.
It is expected that the duplication properties can contribute to molding process of surface pattern in injection molding.
And, conventional CAE systems such as Moldflow and C-Mold can not support analysis of the surface pattern property, since it is influenced by many factors such as polymer types, molding conditions and roughness of the etched mold, and so on. [5, 6] In this paper, injection molding of the surface pattern is investigated experimentally for duplication property on polymer types; amorphous polymer, crystalline polymer.
It means the friction of mold surface affect the duplication property.
The duplication properties of surface pattern are affected with the thickness of specimen, roughness of the etched pattern, and types of polymeric materials substantially.
Online since: November 2015
Authors: Sergiy Kovalevskyy, Ivan Starodubcev, Mirsad Tarić, Žana Džubur
The total error of product life can be found as the vector sum of the error factors.
By affecting a particular factor all product life’s can affect cycle, which in turn requires leaving the quantified uncertainties.
As a finishing smoothing was applied , resulting in increased diffusion properties of the surface layer of the part.
Fig. 4 Diagram eqsperimental position 1 – Insert 3-jaw; 2 – the center of the tailstock of the machine; 3 – electrode; 4 – detail coated; 5 – power; 6 – ammeter; 7 – High frequency current generator; n – speed; Summary The life cycle of items affected by many factors, under configured technological process combination of these factors, namely the set of life cycles of these factors will respond Weibull-Gnedenko.
Muhin, Forming special surface properties of aircraft parts: Schoolbook, UFA, UAI, 1986, pp. 83.
Online since: August 2012
Authors: Zhi Heng Deng, Yue Feng Hu, Hui Xu, Ying Huang
Carbonation performance of RAC, as a main factor affecting structural durability, should be paid more attention while few research is found and its mechanical properties are the focus at the present.
According to available research [1-4], mix proportions of recycled aggregate have assignable effects on its mechanical properties and durability.
Their physical properties are shown in Table 1.
(3) RA content has different effects on carbonation properties of RAC when W/C is varying.
Influence of the amount of recycled coarse aggregate in concrete design and durability properties.
Online since: February 2018
Authors: Federico M. Mazzolani, Beatrice Faggiano, Antonio Formisano, Generoso Vaiano
They represent powerful analysis instruments to perform parametric studies, aiming at detecting the main factors affecting the seismic behavior of MRFs, thus leading towards appropriate design criteria.
The set up MRF model is in fact an advanced computational tool for performing parametric analyses necessary for catching the influence of any geometric and mechanical factor.
In Figure 1 the mechanical properties of the material and the displacement histories applied for the cyclic tests are also depicted.
The MRF specimen; Testing protocol for cyclic tests; Mechanical properties [mm] [16] where sy is the yield stress, su is the tensile strength, eu is the maximum strain, ey is the strain at yield stress, E is the modulus of elasticity, est is the strain at the onset of strain hardening, Est is the strain hardening modulus Behavior under monotonic loads.
“Quantification of building seismic performance factors”.
Online since: November 2012
Authors: Yogesh Kumar Singla, Bijan Kumar Dutta, Rahul Chhibber
Later, Jenning [6] and Lucas [7] investigated the properties of the dissimilar materials welded by friction welding and the process parameters on friction welding method in 1970s.
In Table 1, + and - signs are indicating higher value and lower value for 4 factors respectively.
Table 3, Interactions effects on microhardness at interface and peak temperatures Factors Equations Outcomes of microhardness at interface Outcomes of peak temp.
References [1] Ananthapadmanaban, D, Rao, V.Seshagiri, Abraham, Nikhil, Rao, K.Prasad, “A study of mechanical properties of friction welded mild steel to stainless steel joints”, Materials & Design, 2009, pp.2642-2646
[6] Jenning P., “Some properties of dissimilar metal joints made by friction welding”, Advances in welding processess,1971, pp.147-152
Online since: November 2025
Authors: Nadiia Urazmanova, Igor Stolevich, Anatolii I. Kostiuk, Oleksandr Posternak
The data were processed using experimental and statistical modeling, which made it possible to assess the degree of influence of the selected factors to the strength and deformation properties of light concretes.
Recipe and technological factors have a significant impact on the formation of the basic properties of light concrete.
The influence of composite factors on cubic and prism strength, density, modulus of elasticity, change in time of strength, deformative properties and microcracking limit are investigated.
Dependence of the modulus of elasticity on the strength of the cube: 1- expanded clay concrete on carbonate sand; 2 - expanded clay concrete on quartz sand One of the main factors affecting the parametric points of formation of microcracks is the strength of the bond between the cement stone and the aggregate grains.
Recipe and technological factors have a significant impact on the formation of the basic properties of light concrete.
Online since: October 2022
Authors: M.R. Shivakumar, M. Shilpa, S. Hamritha, Praveen Sobarad, S. Madhosh Gowda
Heat treatment is one of the major process adopted to improve microstructural and mechanical properties of high carbon steels.
Heat treatment along with mechanical treatment significantly affects the metallographic and mechanical properties [3, 4].
Controllable factors with their levels are shown in Table 2.
The effect of tempering on the microstructure and mechanical properties of a novel 0.4C press-hardening steel.
Microstructure and mechanical properties of a ultra-high carbon steel.
Online since: January 2021
Authors: Yoshiaki Toda, Masayuki Shimojo, Tetsuya Matsunaga, Tsutomu Ito, Yoko Yamabe-Mitarai, Haruki Masuyama
In addition, to design Ti alloys with best balance of creep and fatigue properties, prior b grain size which affects fatigue properties and lamellar microstructure which affects creep properties were controlled by heat treatment.
Therefore, to apply Ti alloys in the compressor components, improvement of both superior oxidation resistance and mechanical properties at high temperature are required above 600 ℃.
Then, relation between microstructure and mechanical properties of the Ti-Al-Nb-Zr alloys have been investigated at 24 ˚C-600 ˚C [2-11].
Since mechanical properties are governed by microstructure, a microstructure evolution through various processing and heat-treatment conditions was investigated in Ti-7.5Al-4Nb-4Zr alloy [8, 9].
To apply Ti alloys in the compressor components, fatigue properties are also important in addition with creep properties.
Online since: October 2013
Authors: Hu Wu, Bing Sheng Xu, Yan Wu, Hong Yan Xu
Interfacial reaction during wetting and spreading of Sn-Ag-Cu solder on Ni substrate is a key factor in order to improve the mechanical properties of the joints and the weld quality.
In the process of the lead-free solders welding, the interaction between the solder alloy and the substrate is an important factor to affect the joint mechanical properties and welding quality.
In addition, the intermediate phase will continue to grow after welding, and these microstructural changes will seriously affect the reliability of the solder joints [4].
CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) method is often used to analyze the solder alloy properties and interface reaction product [8, 9].
According to the Kissinger equation, the reaction activation energy Ea, reaction order, the pre-exponential factor and reaction characteristics factors could be calculated.
Online since: December 2011
Authors: Anoma Thitithammawong, Rusmawatee Kasoe, Charoen Nakason
The results prove that the presence of oxirane rings and/or chlorine atoms on the ENR and CENR molecules prominently affects on overall studied properties of the vulcanized rubbers.
Crosslink agents also play significant role on Mooney viscosity, curing and tensile properties of the vulcanized rubbers, however, they are less influence on dynamic mechanical and thermal properties.
This rubber provides good properties combining between excellent properties of the ENR and the CNR.
The tested properties were Mooney viscosity (ASTM D 1646), curing characteristics (ASTM D2084), tensile property (ASTM D412), dynamic mechanical and thermal properties measured by DMA and TGA technique, respectively.
Tensile properties: Tensile properties of the rubber vulcanizates are summarized in Table 3.
Showing 4641 to 4650 of 26166 items