by National Library of Canada = Bibliothèque nationale du Canada in Ottawa .
Written in English
|Series||Canadian theses = Thèses canadiennes|
|The Physical Object|
M. Kashtalyan, C. Soutis, in Fatigue in Composites, Stiffness properties of cracked angle-ply laminates with delaminations. Matrix cracking in off-axis plies is known to introduce some shear-extension coupling into balanced symmetric angle-ply laminates, however, of much smaller extent than that exhibited in unbalanced symmetric angle-ply laminates (Kashtalyan and Soutis, c). M. R. Piggott's 82 research works with 2, citations and 3, reads, including: Fracture Toughness of Angle Ply Laminates misalignment angle, and can provide a full bivariate distribution such as in-plane and out-of-plane misalignments. Three laminates with a lay-up sequence 0/90, unidirectional, and prepreg carbon fibre/epoxy were considered to study the effect of misalignment on properties. The misalignment angle measurement varies between and :// orientation to form angle ply laminates. An individual structural glass fibre is both stiff in tensile and compression . Thickness of hybrid laminate is maintained for 3mm as per ASTM standard  i.e. 10 plies are located symmetrically at ply position to get required orientation angle ply composites
The list of laminates studied in this article includes cross-ply and quasi-isotropic layups, loaded in tension and compression in 0°, 90°, 45° and 5° directions. The limits of the first ply failure load and strength degradation for a realistic range of the defect intensities are :// 1. Introduction. The spread tow thin-ply technology, is a recent technique which incorporates a pneumatic process where fibre tows are continuously and stably opened to produce flat and straight plies with dry ply thicknesses as low as mm. Laminates made of these ultra-thin plies have the potential to suppress both microcracking and delamination before ultimate failure, which results in Failure of a unidirectional composite ply under compression perpendicular to the fibres takes place by the development of a macroscopic shear band at an angle of 56° with the direction perpendicular to the compression axis (Figure a).Micrographs at higher magnification (Figure b) demonstrated that plastic strain localisation in the matrix and decohesion at the fibre–matrix interface strength of discontinuous-fiber composites can this book will deal with both continuous and discontinuous polymer, metal, and ceramic matrix Laminates When there is a single ply or a lay-up in which all of the layers or plies are stacked in the same
The present theory is then applied to the elastic-viscoplastic analysis of glass fiber/epoxy woven composite laminates with misaligned woven fabrics. It is shown that the misalignment significantly affects the macro/micro elastic-viscoplastic properties of the :// For simultaneous failure of cross-ply laminates, the positive values of N 2 causes the percentage of plies, and the failure strength of 0° layer to be higher than that of 90°. The opposite is also correct for negative values of N 2. 6. There is no FPF for angle-ply laminates as all plies must fail simultaneously with the absence of :// Strong positive synergy was observed for the hybrid laminates, which is correlated with the strength and stiffness of the fiber reinforcements in the outermost ply. VCF-RCF and VCF-NF saw a % and % decrease in mean flexural modulus and a % and 28% decrease in flexural strength when compared to pure VCF flexural modulus and strength The total strain energy release rate in quasi-isotropic (QI) laminates is 6 times as low as in angle-ply (AP) laminates, suggesting that large plastic deformation (due to a matrix-driven behavior /_Stress_Concentrations_in_Laminated_Composites.