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2008, vol. 58, br. 1, str. 66-75
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Karakterizacija mokronamotanih polimernih kompozitnih materijala
Characterization of filament wound polymeric composite materials
Vojnotehnički institut - VTI, Beograd
Sažetak
Mehaničke karakteristike kompozitnog materijala stakleno vlakno/poliestarska smola, dobijenog tehnologijom mokrog namotavanja, navedene su ovom radu. Tehnologijom mokrog namotavanja izrađuju se cilindrični proizvodi, a pošto metode ispitivanja mehaničkih karakteristika kompozitnih materijala definišu korišćenje ravnih epruveta, prvo je osvojen postupak namotavanja ravnih ploča, a zatim i postupak dobijanja propisanih epruveta mašinskom obradom pomenutih ploča. Prikazani su rezultati ispitivanja zatezne čvrstoće, modula elastičnosti i Poasonovog koeficijenta pri zatezanju u pravcu i poprečno na pravac vlakana, zatezne čvrstoće, modula elastičnosti i Poasonovog koeficijenta pri pritiskanju u pravcu i poprečno na pravac vlakana, savojne čvrstoće, interlaminarne čvrstoće, smicajne čvrstoće i modula smicanja pomenutog mokronamotanog kompozitnog materijala.
Abstract
The mechanical properties of a composite material - glass fiber/polyester resin, obtained by the filament winding technology, are presented in this paper. The filament winding technology produces cylindrical parts; since the methods of investigation of mechanical properties of composite materials define the usage of flat specimens, a new method of production of flat sheets by filament winding was developed first and then a procedure for obtaining defined specimens by machining flat sheets. The paper presents strength, elastic modulus and Poisson's ratio, obtained by the tension and compression parallel and perpendicular to the fibre direction, flexural strength, interlaminar strength, shear strength and shear modulus of mentioned filament wound composite material.
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