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2010, vol. 60, iss. 1, pp. 54-60
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Influence of internal cyclic pressure on filament-wound composite tubes quality
Uticaj cikličnog unutrašnjeg pritiska na kvalitet mokronamotanih kompozitnih cevi
Military Technical Institute - MTI, Belgrade
Abstract
In this paper the influence of internal hydraulic cyclic pressure on the quality of filament-wound composite glass fiber/polyester resin tubes was investigated. Mechanisms of composites tubes destruction which can be caused by cyclic internal stresses are described and ilustrated. During the action of changeable internal pressure neither weepage of tubes nor drop of applied pressure happened. Almost the same values of hydraulic burst pressure and final radial deformation of cyclised and noncycliced tubes pointed out that the described treatment of cycling has no negative influence on the tested tubes quality.
Sažetak
U ovom radu ispitivan je uticaj cikličnog unutrašnjeg hidrauličkog pritiska na kvalitet mokronamotanih kompozitnih cevi stakleno vlakno/poliestarska smola. Opisane su i skicama prikazane faze mehanizma ostecenja kompozitnih cevi. koji može da se desi pod dejstvom unutrašnjeg cikličnog naprezanja. Tokom dejstva promenljivog unutrašnjeg pritiska nije došlo do curenja cevi ni do pada primenjenog pritiska. Skoro iste vrednosti hidrauličkog pritiska prskanja i konačnih radijalnih deformacija cikliranih i necikliranih cevi ukazuju da opisani postupak cikliranja nema negativan uticaj na kvalitet ispitivanih cevi.
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