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Online since: April 2021
Authors: S. Basavarajappa, R. Pramod, G.B. Veeresh Kumar
Introduction Nanoparticle-reinforced composite materials are employed widely in related to marine, aerospace, automobile, and construction industries for their outstanding mechanical properties [1].
In the present analysis, an attempt has been made to determine the factors affecting surface roughness during the machining of nanocomposites.
To build the experimental plan with three factors and four levels, Taguchi L16 was adopted.
The significant factors are feed rate followed by spindle speed.
[2] Arun G.K., Nikhil Sreenivas, Kesari Brahma Reddy, K Sai Krishna Reddy, Shashi Kumar M.E., Pramod R, Investigation on Mechanical Properties of Graphene Oxide reinforced GFRP, IOP Conf.
Online since: October 2013
Authors: Alex Freilikhman, Rotem Drori, Yakov Shor
Box 1320, Kiryat- Gat 82109, Israel Tel: 972-8-6660000 aafreilik@micron.com, brshemto@micron.com, cyshor@micron.com Keywords: Queue Time; Methodology; Die yield; Process step; Algorithm; Correlation Abstract: Queue time (QT) between consecutive process-steps is one of the factors affecting the quality of current products in semiconductors industry.
It is influenced by several factors [1]: process variation during the production line (e.g mask misalignment); environmental – variation during circuit operation (e.g temperature fluctuations); systematic variation as metal dishing or lithography proximity effect; random variation, as material variation; design related issues etc.
In addition, the algorithm can be applied on any parametric response, as layer thickness, other layer properties, defect count, etc.
Rose, Queue time and x-factor characteristics for semiconductor manufacturing with small lot sizes.
Awang, Queue time impact on defectively at post copper barrier seed, electrochemical plating, anneals and chemical mechanical polishing.
Online since: July 2007
Authors: Kyu Hwan Oh, Suk Hoon Kang, Yong Jin Park, Jung Tak Moon, Jong Soo Cho, Joon Sub Hwang, Jae Hyung Cho
It is known that mechanical properties of materials are deeply related to the microstructure.
With appropriate control of deformation and heat processes, the mechanical properties of final products, such as tensile strength and elongation can be improved.
In particular, the factors arising sample preparation and measuring system conditions can preclude the use of PQ as a reasonable measure for characterization of materials during each scan.
It is possible, however, that the effect of measuring factors associated with microscopy and EBSD system can be ignored, assuming the parameters are carefully fixed for the measurements.
Consequently, the PQ is difficult to use as a measure of mesoscopic material properties.
Online since: February 2020
Authors: Sakorn Chonsakorn, Chi Wai Kan, Rattanaphol Mongkholrattanasit, Wen Yi Wang, Somchai Udon, Suchitra Chanuntawaree, Manat Peangsai, Hin Heng Lois Yim
Hand feel properties are importance factor of quick dry inner wears.
Based on the system calculation by PharbrOmeter, the properties related to hand value of resilience, softness and smoothness could be obtained.
It was reported that the fiber diameter and thickness are the main factors affecting resilience of fabric.
As discussed above, the fabric with less density, weight and thickness is conducive to the resilience properties.
Softness is highly correlated with fabric compression properties [7].
Online since: March 2012
Authors: Marian Zaborski, Anna Strąkowska, Anna Kosmalska
The ageing coefficients were calculated according to the relationship between the tensile strength and elongation at break changes, resulted as the effect of climatic and UV factors, and related to the same mechanical properties before the ageing processes.
The enhanced mechanical properties of silica-filled-POSS/HNBR composites are likely due to the increased dimensionality of the octafunctional POSS molecules.
A number of studies on POSS nanoparticles successfully incorporated into various polymers with the goal of modifying mechanical or thermal properties have been reported.
Compared to the initial properties of the studied elastomeric composites, placed in Table 2, it is clearly observed that generally both the climatic and UV ageing affect the adverse changes in mechanical properties, revealed as increse of rigidity and reduced elasticity coupled with lower strength of some samples.
The observed improvements in mechanical properties can likely be attributed to the increased dimensionality of the POSS cross-linker.
Online since: May 2011
Authors: Zhi Wu Yu, Li Song
The effects of reinforcement corrosion on fatigue behavior of the strengthening beam can be attributed to a combination of four factors, including deteriorated bond behavior between reinforcement bras and surrounding concrete, loss of effective cross-section area of reinforcement, the stress concentration on steel bars, and degradation of mechanical properties of steel bars.
Fig.1 Typical dimensions and reinforcement details of test specimens (unit: mm) Material properties.
The effects of reinforcement corrosion on fatigue behavior of the strengthening beam can be attributed to a combination of four factors, including deteriorated bond behavior between reinforcement bras and surrounding concrete results from rust deposition in their interface zone, loss of effective cross-section area of reinforcement, the stress concentration on steel bars due to corrosion pit, and degradation of mechanical properties of steel bars.
As corrosion progress, however, further corrosion significantly affected the fatigue life.
The effects of reinforcement corrosion on fatigue behavior of the strengthening beam can be attributed to a combination of four factors, including deteriorated bond behavior between reinforcement bras and surrounding concrete, loss of effective cross-section area of reinforcement, the stress concentration on steel bars, and degradation of mechanical properties of steel bars. 2.
Online since: June 2014
Authors: Axel von Hehl, Mirko Schaper, Barbara Striewe, Norbert Grittner, Florian Nürnberger
The mechanical properties were determined by tensile tests.
Due to the differing material properties the compound production process has to meet demanding requirements.
Additionally, the mechanical properties of the compounds were determined.
North: Influence of silicon in aluminium on the mechanical properties of titanium/aluminium friction joints.
Aki: Mechanical properties of titanium-5083 aluminium alloy friction joints.
Online since: April 2013
Authors: Sylvain Fréour, A. Yousfi, Frederic Jacquemin
In order to predict the effective properties of PMR-15/T650-35 composite ply in the temperature range [250-350°C], the time-dependent mechanical properties of PMR-15 matrix determined experimentally [1], were considered.
The mechanical properties of the fibers do not experience any change due to the aging process in such a temperature range [2, 3].
Consequently, the corresponding macroscopic thermal and hygroscopic properties will be affected, also.
The magnitude of the effective properties remains similar, however.
The macroscopic hygro-thermo-mechanical properties were evaluated numerically using the viscoelastic Eshelby-Kröner self-consistent scale transition model.
Online since: June 2014
Authors: Marat Gazizov, Rustam Kaibyshev, Ivan Zuiko
However, the effect of the cold strain on the static mechanical properties and creep resistance of Al-Cu-Mg-Ag alloys has not been sufficiently investigated.
Intermediate deformation deteriorates the creep properties.
It is worth noting that elongation-to-failure under creep conditions is lower by factors of about 2 or 3 in comparison with tensile test.
It seems that the YS and UTS at room temperature and rupture time or minimal creep rate at 150°C are the key mechanical properties of this material but these properties are typically opposite to each other.
Zeng, Enhanced mechanical properties in an Al-Cu-Mg-Ag alloy by duplex aging, Mater.
Online since: August 2012
Authors: Czesław Goss, Paweł Marecki
Test results In the first place in order to determine the basic material properties the flat specimen static tensile tests were carried out.
Table 2 shows the typical mechanical properties obtained during testing.
Mechanical properties Steel S960QL R0,2 [MPa] Rm [MPa] Ru [MPa] A [%] Z [%] E [GPa] 1000 1090 2209 14 38 208 Figure 1.
The measuring points were placed in the center of the welded joint (point 1), on the melting line (point 2) and on the border of heat-affected zone (point 3) (Figure 6).
The results confirmed a great influence of welded joints on mechanical properties of structures made using this steel.
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