The mechanical properties of the multi-walled carbon nanotube (MWCNT)/epoxy composites affected by carboxyl and amino functionalized MWCNT are investigated. Tensile tests of the specimens were carried out to obtain mechanical properties of MWCNT/epoxy composites for various weight-percents (wt %) of MWCNTs. In order to properly predict the mechanical properties of MWCNT reinforced epoxy composi...

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 have developed the Halpin system to implement our multimodal conversational model for information retrieval. This dialogueoriented interface allows the access to a digital library database, on the internet, in a natural language way, and gives its oral responses via usual browsers. The results of the first experiments show that the Halpin system provides some interesting dialogues (in partic...

The objectives of this project were to find novel genes that might be useful for optimising plant biomass to facilitate biofuel production. Since the phenolic polymer, lignin, surrounds and cross-links to other cell wall components, reducing the amount of lignin or altering its structure to make it easier to extract have become major targets for improving sugar release from plant biomass (sacch...

Abstract This article analyzes the tensile modulus of shape memory polymer nanocomposites (SMPNs) at ambient temperature. Several conventional models, such as rule mixtures, Halpin–Tsai and Kerner–Nielsen, cannot practically estimate due to absence some main parameters for nanocomposites. Additionally, in Kerner–Nielsen Sato–Furukawa models are useless ineffective, small concentration high nano...

fMany military leadership studies have related subordinates' perceptions of leader behavior to subjective (i.e., paper and pencil) measures of subcrdinate satisfaction and/or group effectiveness e.g., Halpin, 1954 (1); Reaser, Vaughan, and Kriner, 1974 (2); Bleda, Gitter, and D'Agostino, 1977 (3); O'Reilley and Roberts, 1978 (4). However, few studies have assessed the relationship between subur...

The fiber orientation state in carbon reinforced polyamide 6 composites was expressed by an order parameter (S2) that is used to express the of Nematic Liquid Crystal. S2 derived from X-ray diffraction image reflects distribution. As specimens, various content were prepared and, regardless content, and their tensile properties showed positive correlation. Furthermore, we predicted relation betw...

This paper presents a nonlinear vibration analysis of functionally graded graphene platelet (GPL) reinforced plates on elastic foundations. Uniformly or non-uniformly distributed internal pores were present in the plates. Based modified Halpin-Tsai micromechanics model and extended rule mixture, material properties evaluated. The governing equations, coupled with effect foundations, derived by ...