With the increasing applications of laminated composites in all kinds of industries, it becomes imperative to detect delamination, a frequently occurring damage which causes substantial stiffness loss in composite structures. This paper presents an approach to assess delaminations (in terms of their size, in-plane location and interface) in fibre reinforced laminated composite plates using natu...

Abstract A multidirectional damage model was proposed to predict fatigue evolution and final failure of composite laminates in this paper. characterization for established characterize the influence three main modes on damaged mechanical behavior at micro–macro level. The also based mechanics stiffness degradation by means model. Then, a relationship between residual strength introduced, from w...

The presence of the delamination causes reductions in the bending stiffness which in turn leads to the undesirable loss in the compressive buckling and post-buckling strength. Thus, it is of chief importance to investigate the compressive behavior of composites with delaminations. Anastasiadis et al. analyzed the buckling and postbuckling behavior of delaminated composite laminates with a throu...

Previous research has hinted on further improvements of the buckling behaviour variable-stiffness laminates by incorporating overlaps, resulting in a variable thickness profile that is non-linearly coupled to steering angles. The present study compares two modelling strategies consider distribution: 1) as-manufactured with discrete thicknesses; and 2) smoothed continuous distribution. created o...

For several years, the aviation industry has seen dynamic growth in use of composite materials due to their low weight and high stiffness. Composites are being considered as a means building lighter, safer, more fuel-efficient automobiles. Composite material relatively new kind unmanned aerial vehicle, commonly known drone. Incremental forming methods allow be quickly formed without need manufa...

A viable solution to the ever-demanding weight-saving target in aerospace industry is the replacement of conventional engineering alloys with composite materials in primary structures. A major concern to the effective use of composite laminates is the substantial reduction in the compressive strength when the contact force has exceeded the delamination threshold load (DTL). This paper focuses o...

Composite materials are used in a wide range of applications, but due to their inherent nature heterogeneity, particularly for thermoset-based polymer composites, recycling is problem, and life cycle management remains one, too. This study applies circular economy approach the problem excess waste glass fibre (GF) composites seeks solution by testing methodology thermal GF combining different t...

The mode I interlaminar fracture toughness of stitched and unstitched composite laminates of continuous UD flax fiber and epoxy matrix was experimentally and numerically investigated. A twistless flax fiber yarn was used for stitching purpose. The mode I interlaminar energy release rate of the unstitched and stitched laminates was experimentally determined through Double Cantilever Beam (DCB) t...

The first form of damage in composite laminates is often matrix microcracks that are defined as intralaminar or ply cracks across the thickness of the ply and parallel to the fibers in that ply (see reviews in [1,2]). Tensile loading, fatigue loading, environment, and thermal cycling can all lead to microcrack formation. Microcracks can form in any ply that has a significant component of the ap...

STATEMENT OF PROBLEM Cyclic thermal fatigue has demonstrated a significant influence of the thicknesses of luting composite and ceramic in crack propensity of porcelain laminates. PURPOSE This study was conducted to define potentially involved parameters for crack development in porcelain laminates bonded to teeth. Finite element modeling was used to evaluate the respective effects of luting ...