Title Influence of ply orientation on mode I interlaminar fracture toughness of woven carbon and glass composites /
Another Title Angliaplastikio ir stiklaplastikio sluoksnių armavimo kampų įtaka irimo tarpsluoksnyje tąsumui atplėšiant.
Authors Keršienė, N ; Žiliukas, A ; Keršys, A
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Is Part of Mechanika.. Kaunas : Technologija. 2010, Nr. 2, p. 31-36.. ISSN 1392-1207. eISSN 2029-6983
Keywords [eng] cantilever beams ; fracture ; glass ; reinforcement ; steel sheet ; weaving
Abstract [eng] The paper presents the study of the influence of ply orientation on mode I interlaminar fracture toughness of woven carbon and glass composites. Double cantilever beam test of mode I as performed on twill woven car-bon/epoxy and E-glass/epoxy composite systems. Speci-men stacking sequences with initial delamination at the angles of 0//0, 0//90, + 45//− 45 and 0//+ 45 were used. To define the exact instant of crack initiation the criteria of nonlinearity (NL) and 5% offset or maximum force criteria were used. The conservative Berry method and nonlinear-ity criterion that enable to determine the increase of the damages in microlevel were chosen for the result estima-tion. The evaluation of the influence of the layer rein-forcement angles on GIc disclosed that the reinforcement of the layers in the delamination plane at the angles of 0//0 and especially 90//0 was the most dangerous. Thus in the structures the layers should be reinforced at the angles of 0//+45 because GIc was by 1.4 times greater if compared with the instance of 0//0 angles.
Published Kaunas : Technologija
Type Journal article
Language English
Publication date 2010
CC license CC license description