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Online since: November 2013
Authors: Lakshmanan Damodhiran, Sureshkumar Manickam Shanmugasundaram, Dhinakaran Gu, Vignesh Billan
[3] Sonbatry El, Khashaba U.A, Machaly T, Factors affecting the machinability of GFRP/epoxy composites, Comp Structures, 63 (2004) 329-338
[8] M.Chandrasekaran, D.Devarasiddappa “Development of Predictive Model for Surface Roughness in End Milling of Al-SiC Metal matrix Composites using Fuzzy logic”, Engineering and Technology 68 (2012) 1271-1276 [9] Sureshkumar Manickam Shanmugasundram et.al, Experimental Investigation of Prediction of Hole quality Characteristics of Aluminum Matrix Composite (AMC225xe).
[10] Vikram Banerjee et.al,Design space exploration of mamdani and sugeno inference systems for fuzzy logic based illumination controller, International journal of VLSI and Embedded system-IJVES (2012) 97-101
Online since: December 2013
Authors: Normayati Nordin, Vijay R. Raghavan, Safiah Othman, Nur Hazirah Nohseth
Referring to Chong et al. [7] and discussed in previous section, the leading edge of the guide vanes were located at 28.6° of 12cm radius.
From these results, when compared to results from Normayati et al. [11] in Table 2, it proves that with the installation of baffle, flow uniformity distortion can be reduced up to 63%.
The best produced pressure recovery of Cp = 0.526 was recorded when the system operated at maximum Rein = 1.775E+05, compared to Cp = 0.239 recorded by Normayati et al. [12] at the same Rein with 54.6% deviation of improvement.
References [1] El-Askary, W.A., and Nasr, M., 2009, “Performance of a Bend Diffuser System: Experimental and Numerical Studies,” Journal of Computer & Fluids, 38, pp. 160-170
Online since: January 2014
Authors: Michel Picanço Oliveira, Frederico Muylaert Margem, Jean Igor Margem, Sergio Neves Monteiro, Caroline Gonçalves Oliveira, Lucas Barbosa de Souza Martins
According to Khan et al [20], based on results in wood, this hydroxyl (OH) activity may be associated not only to adsorbed water onto the fiber surface but also to alcohols existing in the fiber constituents such as cellulose, hemicellulose and lignin.
For instance, the 900 cm-1 band was indicated by Ray et al [23] as due to β-glucosidic linkage.
Hischier, A.L.
Dusfrene, W.K .El-Zawawy and F.A.
Online since: September 2013
Authors: Bin Guo, Pan Xin Li, Hai Tian Jiang, Hao Tang
Magdy et al. [2] found that yield stress increased slightly with increasing the TPS content up to 20 wt%, and it began to decrease when TPS content up to 25 wt%.
Wang et al. [6] prepared TPS/LDPE blends using maleic anhydride as compatibilizer by one-step molding method, starch and polyethylene mass ratio was up to 7:1, but it was found that the one-step molding step may cause bad mixing of starch and glycerol, which affected the formation of thermoplastic starch.
Bikiaris et al. [7] used two-step molding to prepare LDPE/TPS plastic, thermoplastic starch was first prepared, and then adding a certain amount of the compatibilizer maleic anhydride grafted polyethylene (PE-g-MA) and LDPE to blend extrude LDPE/TPS plastic.
El-Naggar Abdel: Polymer Composites Vol. 29(2008), p. 1140
Online since: March 2009
Authors: Djamel Eddine Ameziani, K. Bouhadef, Rachid Bennacer, Omar Rahli
Ameziani 1,2 1 Laboratoire TPMP, Faculté de Génie Mécanique et Génie des Procédés, USTHB -BP 32 El Alia, Bab Ezzouar, Algiers, Algeria 2 Université de Cergy-Pontoise LEEVAM- Neuville Sur Oise 95031, France a omar.rahli@u-cergy.fr, b khedbouh@yahoo.fr, c rachid.bennacer@u-cergy.fr Keywords: PRB flow, Mixed convection, Heat and mass transfer, Rectangular duct.
In the case of mixed convection with buoyancy effects due to thermal diffusion, Cheng et al. [9] discussed mixed convective heat transfer in the entrance region of a rectangular duct at a large Prandtl number.
With combined buoyancy effects, Lin et al. discuss the heat and mass transfer in a vertical pipe [11] and in horizontal square duct [12]; a uniform temperature and concentration was assumed at the bottom wall.
A combined experimental and numerical investigation was carried out by C.Yu et al. [14].
Online since: January 2005
Authors: Sung S. Park, Min S. Yoo, Dae H. Kang, Nack Kim
However, a large number of Mg alloys used for casting are confined to Mg-Al system such as AZ91 or AM60 alloys.
Experimental Procedure AZ91 alloy (Mg-9.2wt.% Al-0.75wt.% Zn-0.21wt.% Mn) and experimental MX alloy (Mg-Sn-X) were studied in the present study.
[µm] Average particle size (matrix) [µm] Squeeze cast AZ91 11.6 53 11 0.3 Squeeze cast MX 13.0 60 13 0.5 Die cast AZ91 10.8 15 3 - Die cast MX 10.3 16 2.5 0.04 0 50 100 150 200 250 Strength (MPa) 0 4 8 12 16 20 Elongation (%) YS UTS El.
Suzuki et al.: Mater.
Online since: June 2012
Authors: Jin Hua Yang, De Liang Chen, Cheng Jiang
By exploiting a mixed laminated theory with a high order displacement field, Correia et al. [5] discussed the active control of axisymmetric shells with piezoelectric layers.
Ottavio et al.[6] gave the closed-form solutions for the free-vibration problem of simply supported, orthotropic piezoelectric shell.
Using a semi-analytical axisymmetric shell finite element model, Santos et al.[10] studied the bending and free vibrations of multilayered cylindrical shells with piezoelectric properties.
Value of material constants Material EL(GPa) ET(GPa) GLT(GPa) GLZ(GPa) GTZ(GPa) Kevlar-epoxy 132.4 10.8 5.5 5.6 3.6 0.24 1580 PZT5 62 62 23.6 23.6 18 0.31 7750 PVDF 4 4 1.54 1.54 1.54 0.3 1800 Material Kevlar-epoxy ―― ―― ―― ―― ―― ―― PZT5 7.209 7.209 2598 2598 2598 PVDF 0.044 0.044
Online since: May 2010
Authors: Anne-Claude Courbaron Gilbert, Nour-Eddine El Bounia, Eve Péré, Laurent Billon, Christophe Derail
Dispersion improvement of carbon nanotubes in epoxy resin using amphiphilic block copolymers Anne-Claude Courbaron Gilbert1,2, Nour-Eddine El Bounia1, Eve Péré 3, Laurent Billon2,a, Christophe Derail1,2,b 1 IPREM-CANBIO UMR CNRS 5254, UPPA, 64053 Pau, France 2 IPREM-EPCP UMR CNRS 5254, UPPA, 64053 Pau, France 3 IPREM-ECP UMR CNRS 5254, UPPA, 64053 Pau, France corresponding authors a laurent.billon@univ-pau.fr, b christophe.derail@univ-pau.fr Keywords: Carbon nanotubes, dispersion, epoxy, nanocomposite, copolymer.
As an example, Cho et al. [15] have used a commercial block copolymer to enhance CNT dispersion in epoxy resin.
As shown by Park et al. [22], because of a lack of control, the PMMA block presents a high polydispersity index.
Margrave, and al.: Nano Letters.
Riess, and al., Patent US 5681877. (1997) [21] Couvreur L., C.
Online since: October 2023
Authors: Bilal El Moussaoui, Edurne Iriondo, Franck Andres Girot Mata, Ibai Ojeda
Influence of Impact Speed on the Quality of Riveted Lap Joints of Composite/Metal Stacks Ibai Ojeda1,a*, Bilal El Moussaoui1,b, Edurne Iriondo1,c, Franck Andres Girot1,2,d 1 Mechanical Engineering Department, UPV/EHU, Bilbao, Spain 2IKERBASQUE, Basque Foundation for Science, Bilbao, Spain aibai.ojeda@ehu.eus, bbilal.elmoussssaoui@ehu.eus, cedurne.iriondo@ehu.eus, dfrank.girot@ehu.eus Keywords: Aeronautical, joining, Riveting, EMR, FEM, Composites Abstract.
Hao Jiang et al. [9] proposed that when the round head rivet is placed on the lower part together with the CFRP sheet, the microdefects of CFRP sheet in the joint was the fewest.
Zengqiang Cao et al. [6] formulate that the use of a special washer, see Fig. 5, and adequate clearance between the shaft and the aperture wall can restrict shaft expansion and prevent damage to composite materials, and also studies the configuration of the washer and the riveting clearance of composite laminates.
The experimental riveting process is carried out by a drop tower, to simulate this and to save simulation time the punch is modelled al the momentum of contact with the rivet.
Effect of locking mode on mechanical properties and failure behavior of CFRP/Al electromagnetic riveted joint.
Online since: July 2011
Authors: Liang Yi, Lian Fa Yang, Chen Guo
A pulsating loading path, under which the internal hydraulic pressure necessary for bulging a tubular part is intentionally oscillated during tube hydro-forming, was proposed by Rikimaru et al [12] and proved that it can not only delay the happening of wrinkling and cracking but can also reduce the hydraulic pressure for hydro-forming.
Hama et al [13] made a finite element analysis on the pulsating hydro-forming of a three-dimensional automotive part and the result shows that enough bulging height can be obtained by applying a small hydraulic pressure.
Yuan et al [14] investigated the pulsating hydro-forming of an automotive subframe by finite element simulation and the study shows that the pulsating path can restrain the local excessive thinning perfectly.
Yang et al [15] explored the mechanism of pulsating hydro-forming by finite element simulation and concluded that the uniformity of wall thickness of a formed part was improved remarkably since the pulsating hydraulic pressure had driven the deformation zone into two alternating states “Tiny wrinkling appears and then disappeared’’.
Vol. 166(2006), p.142-145 [5] E.L.
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