American Transactions on
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    :: Vol.3(1) (January 2014)

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    :: American Transactions on Engineering & Applied Sciences

    http://TuEngr.com/ATEAS     
      
    V5(1) Cover V3(1) January 2014

    ISSN 2229-1652
    eISSN 2229-1660


    FEATURE PEER-REVIEWED ARTICLES


    • Characterization of Electrospun Nafion-Poly Acrylic Acid Membranes, Breakthroughs in High Water Uptake Membranes

      • Ricky Valentin *, Carlos Otaño, Vijay K. Goyal, Joel Ramgattie (Department of Mechanical Engineering, University of Puerto Rico at Mayagüez, PR 00680 USA ) 

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      Keywords: Scanning electron microscopy; ion exchange capacity; polymers; morphology 

      Abstract
      Problem statement: In this paper we focus on discussing the mechanical properties of electrospun Nafion-PAA membranes. Approach: We prepared solutions of varying composition ratios of Nafion and PAA in order to create the membranes using the electrospinning process. After the confection of the membranes they were studied using SEM Microscopy and various methods of mechanical properties determination. Results: Results have determined that the 80%Nafion/20%PAA heat treated post compacted membranes have the best water uptake. Conclusion: The membranes produced are superior to those commercially produced in regards to water uptake, especially those of Order 1.      

    • Characterization of a 2D Geometry Using C++ Interface

      • Vijay K. Goyal *, Ricky Valentin, Michael J. Cruz, Neit J. Nieves (Department of Mechanical Engineering, University of Puerto Rico at Mayagüez, PR 00680 USA ) 

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      Keywords: CAD; Solid Modeling; parametric, dimensions; constraints 

      Abstract
      Problem statement: Usually, we want to represent the final computer aided drawings in a detailed characterization of the design geometry. In some cases, the final design is corrupted with additional geometry parameters, which are not part of the problem, and lack of dimensions. We need an automatic approach to resolve this issue. Approach: Here, we develop a toolkit, which integrates SIEMENS NX8 and C++, to improve the characterization process for 2D geometries. Results: We applied the tool to several different 2D cross-sections and proved that we were able to removal the unwanted parts from the geometry and apply the proper dimensions and constraints to the geometry. Conclusion: This makes the 2D geometry characterization process faster and user-friendly.

    • Computer Modeling and Optimization of Swage Autofrettage Process of a Thick-Walled Cylinder Incorporating Bauschinger Effect

      • Zhong Hu * and Chandra Penumarthy (Department of Mechanical Engineering, South Dakota State University, USA ) 

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      Keywords: Nonlinear Strain-hardening; Finite Element Analysis; Residual Stress. 

      Abstract
      In this paper, the swage autofrettage process of a thick-walled cylinder has been numerically investigated. The corresponding axi-symmetric finite element model has been developed. The elasto-plastic material model with nonlinear strain-hardening and kinematic hardening (the Bauschinger effect) was adopted. The residual stresses in the thick-walled cylinder induced by swage autofrettage process have been analyzed. The residual stresses by modeling have been compared with the experimental results from the literature. The influences of the Bauschinger effect and friction on stress and strain distribution have been evaluated. The optimum mandrel dimensions (percent radial interference) and the maximum percent reduction of the von Mises stress in the swaged autofrettaged thick-walled cylinder under the elastic-limit working pressure have been found. 

    • Cultural Expression of Arab Expatriate Communities in Foreign Countries through Architecture

      • Mohamed I. M. Ibrahim * , Eman M. E. Attiya, and Radwa M. M. Diab(Department of Architecture, Faculty of Engineering, Menoufiya University, EGYPT ) 

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      Keywords: Arab Immigrants; Western Architecture; Cultural Conflict 

      Abstract
      Arab expatriate communities are subjected to strong social and cultural influences which restrain their ability to freely express their native culture, and - subsequently - express the rich long history of architecture that Arabic civilization has established. This problem can be traced to several reasons, whether different building laws at the new states of destination, exotic materials, dissimilar climate or different customs and traditions. Therefore, Arab communities end up melting in foreign cultures that are way far from their native culture as well as their original architecture. This leads to increase the gap between the intermixed communities of Arabs and native Westerns. Thus, this research aims to detect the significant attempts by Arab communities which reside in foreign countries to express their cultural identity through architecture, in order to enable such communities to exhibit their culture fairly, while conforming to the local conditions and preset limitations of their host countries. 

    • The Role of Design in Perceiving the Auto-Brand by the Visitor within the Auto-Showroom

      • Firas Al-Helly *, and Fuziah Ibrahim (School of Housing, Building and Planning, University Sains Malaysia, MALAYSIA ) 

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      Keywords: Showroom Design; Auto-show; Place Identity; Visitor Perception; and Auto Branding. 

      Abstract
      Although a car is considered as a classical mode of transportation, but it has exceeded its role to become a social and personality status symbols. Auto-showrooms play a vital role in showcasing the cars. The automotive brand had become a major theme to design the auto-showrooms exterior and interior environment, The study aims to determine the role of design (as a set of visual elements) to express the place identity within the interior spaces for showrooms, and how design affects the visitor's perception. The researchers developed the observational techniques in performing this study. The findings show that design plays a clear role on the visitors’ perception of showroom identification via highlighting the automotive brands. 

    Previous: Vol 2(4) October 2013 ......... Next: Vol 3(2) April 2014


    Call-for-Papers
    Call-for-Scientific Papers
    Call-for-Research Papers:     ATEAS invites you to submit high quality papers for full peer-review and possible publication in areas pertaining engineering, science, management and technology, especially interdisciplinary/cross-disciplinary/multidisciplinary subjects.

    To publish your work in the next available issue, your manuscripts together with copyright transfer document signed by all authors  can be submitted via email to Eic @ TuEngr.com (no space between). (please see all detail from Instructions for Authors)


    Publication and peer-reviewed process:
    After the peer-review process (4-10 weeks), articles will be on-line published in the available next issue.  However, the American Transactions on Engineering, & Applied Sciences  cannot guarantee the exact publication time as the process may take longer time, subject to peer-review approval and adjustment of the submitted articles.

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