Lightweight blades with high strength are urgently needed in practical rotor engineering. Sandwich structures porous core and reinforced surfaces commonly applied to achieve these mechanical performances. Moreover, large aspect ratios established by the elastic plate models theory. This paper studies vibration of a rotating sandwich pre-twist setting angle graphene nanoplatelets (GPLs). Its is ...

In this study, thermoplastic polyolefin elastomeric (TPO) nanocomposites were fabricated by friction stir processing. The effect of different pin geometries on clay dispersion and mechanical properties of the TPO nanocomposite reinforced with 3% wt nanoclay has been first investigated. The optimum pin geometry namely threaded cylindrical pin was then used to fabricate the nanocomposites contain...

This study explores the hybridizing effect of mechano-chemical activated fly-ash (FA) in polypropylene (PP) composites reinforced with sisal fibers. Activation and resistance against agglomeration FA has been achieved by modifying it 2, 4, 6 wt.% cetyltrimethylammonium bromide (C-tab). activation C-tab particle size reduction to nano-level (< 1 µm) have appropriately a planetary ball milling sa...

• Probabilistic model is proposed to predict the elastic modulus of cementitious composites containing CNTs. Optimum ranges experimental variables are found using a reliability analysis. Varied combinations can be used attain similar modulus. Similar trend observed between and predicted moduli. Carbon nanotube (CNT) one most promising nanomaterials increase composites. However, CNT characterist...

Nanocomposites of poly(lactide) (PLA) and cellulose nanocrystal (CNC) were fabricated using two different types covalently grafted surface compatibilizers, namely fatty acids (lauric or stearic acid) poly(glycidyl methacrylate) (PGMA) bearing reactive epoxy end-groups. Temperature-Modulated DSC analysis informed on weak attractive interaction PLA CNC-g-lauric acid plasticizing CNC-g-stearic aci...

Copyright © 2014 David Halpin. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In accordance of the Creative Commons Attribution License all Copyrights © 2014 are reserved for SCIRP and the owner of the intellectual property David...

we are concerned with the development of a k−step method for the numerical solution of fuzzy initial value problems. convergence and stability of the method are also proved in detail. moreover, a specific method of order 4 is found. the numerical results show that the proposed fourth order method is efficient for solving fuzzy differential equations.