Research Papers: Design and Analysis

Experimental Investigation of a Large-Scale Composite Riser Tube Under External Pressure

[+] Author and Article Information
Guillermo Ramirez1

Department of Civil and Environmental Engineering, University of Texas at Arlington, P.O. Box 19308, Arlington, TX 76019-0308willy@uta.edu

Michael D. Engelhardt

Department of Civil, Architectural and Environmental Engineering-STR, University of Texas at Austin, 1 University Station C1748, Austin, TX 78712-0273mde@mail.utexas.edu


Corresponding author.

J. Pressure Vessel Technol 131(5), 051205 (Jul 28, 2009) (8 pages) doi:10.1115/1.3122773 History: Received January 21, 2008; Revised September 03, 2008; Published July 28, 2009

A collapse pressure test was conducted on a full-scale diameter prototype composite offshore drilling riser. The test specimen was a carbon fiber-epoxy filament-wound tube, approximately 56.4 cm outside diameter and 3.05 cm wall thickness. The tube was subjected to external water pressure up to collapse. The purpose of the test was to confirm the external pressure capacity of the specimen and to provide a basis for verification and calibration of analytical estimates of the collapse pressure of large scale carbon fiber tubes. The specimen was instrumented with strain gauges on both the outside and inside walls of the tube. This paper describes the test specimen and presents key results of the test.

Copyright © 2009 by American Society of Mechanical Engineers
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Figure 10

Comparisons of hoop strains on interior and exterior of tube wall

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Figure 11

Measured strains at test

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Figure 12

Hoop strains estimated by FE models with delamination

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Figure 1

Overall specimen dimensions

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Figure 2

End view of specimen showing delamination

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Figure 3

Test specimen with internal filler pipe and fixtures

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Figure 4

Specimen end fixtures and seal system

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Figure 5

Assembly of specimen at Ferguson Laboratory

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Figure 7

Location of strain gauges of AE sensors

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Figure 8

Views of tube after testing

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Figure 9

Measured strains versus pressure

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Figure 13

Collapse prediction for nondelaminated specimen by FEA



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