This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Yousefpour, A. Articles by Ghasemi Nejhad, M. N. Search for Related Content Social Bookmarking                         What's this?

Experimental and Computational Study of APC-2/AS4 Thermoplastic Composite C-Rings

Advanced Materials Manufacturing Laboratory, Department of Mechanical Engineering, University of Hawaii at Manoa, 2540 Dole Street, Holmes Hall 302, Honolulu, HI 96822

Mehrdad N. Ghasemi Nejhad

Advanced Materials Manufacturing Laboratory, Department of Mechanical Engineering, University of Hawaii at Manoa, 2540 Dole Street, Holmes Hall 302, Honolulu, HI 96822

The mechanical performance of APC-2/AS4 thermoplastic composite C-ring samples with different processing conditions was investigated, and experimental results were compared with numerical results using finite element methods (FEMs). Mandrel/substrate preheating was found to be necessary for good-quality parts. Ten sets of samples, with five samples per set, were manufactured using in-situ thermoplastic composite filament winding. For the first five sets, tape preheated to below the glass transition temperature (T_g) at 110°C was used, while the consolidation pressure for various sets was 5.5, 12.6, 19.4, 26.0, and 32.4 kN/linear-meter. The same pressures were used for the next five sets while the tape was preheated above the T_g at 170°C. Scanning electron microscopy (SEM) was used for quality control. C-ring tests were performed to evaluate failure stress, strain, and deflection of C-rings at room temperature. Samples failed in compression at ring mid-section and inner radius. Samples made with 12.6 and 19.4 kN/linear-meter consolidation pressures yielded the best results. Non-linear FEM was employed to simulate the C-ring experiment using shell, target, and contact elements. The experimental deflection to failure was applied to the model, and the failure stress, strain, and load were determined. The results from non-linear numerical analysis were slightly higher than those determined from available analytical solution.

Key Words: APC-2/AS4 • in-situ thermoplastic composite filament winding • infrared local heat source • infrared preheating • tape • substrate • mandrel • glass transition temperature • C-ring test • non-linear finite element analysis • contact elements • scanning electron microscopy

Journal of Thermoplastic Composite Materials, Vol. 14, No. 2, 129-145 (2001)
DOI: 10.1106/1RQV-317Q-36K0-1E6P


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				H. Lu, M. Schlottermuller, N. Himmel, and R. Schledjewski Effects of Tape Tension on Residual Stress in Thermoplastic Composite Filament Winding Journal of Thermoplastic Composite Materials, November 1, 2005; 18(6): 469 - 487. [Abstract] [PDF]

				A. Yousefpour and M. N. Ghasemi Nejhad Design, Analysis, Manufacture, and Test of APC-2/AS4 Thermoplastic Composite Pressure Vessels for Deep Water Marine Applications Journal of Composite Materials, October 1, 2004; 38(19): 1701 - 1732. [Abstract] [PDF]

				A. Yousefpour and M. N. G. Nejhad Effects of Geometric Optimization of Plug-Supported End-Caps on the Performance of Thick Thermoplastic Composite Pressure Vessels Under External Hydrostatic Pressure Journal of Thermoplastic Composite Materials, September 1, 2002; 15(5): 403 - 428. [Abstract] [PDF]