Paper number 105
|PREDICTION OF THE LONG TERM MECHANICAL BEHAVIOUR OF COMPOSITE PIPES UNDER INTERNAL PRESSURE FROM SHORT TERM TESTS|
Patricia KRAWCZAK, Patrick VANDEVOIR and Josť PABIOT
ECOLE des MINES de DOUAI,
Department of Polymers & Composites Technology,
941 rue Charles Bourseul, BP 838, F-59508 DOUAI, FRANCE
http://www.ensm-douai.fr E-mail: email@example.com
Fax:+33 3 27 71 25 25
|Summary||The aim of the paper is the prediction of the long-term mechanical behaviour of GFRP pipes under internal dynamic water pressure with end effects from burst tests carried out on pipes. Both short-term damage and long-term dynamic fatigue damage have been characterized by damage factors with a separation of damage initiation and propagation stages. A relationship has been found between these quantities: When there is a unique structural parameter which is the main generating element of the materials degradation, the effect of an overload under an increasing pressure is similar to the effect of a number of fatigue cycles under a repeated pressure.
||Keywords|| tubes, damage, dynamic fatigue, glass fibres, polymer matrices, interface, biaxial loading, filament winding.
Theme : Composite Structures ; Pipes
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