The performance of a state-of-the-art continuum damage mechanics model for interlaminar damage, coupled with a cohesive zone model for delamination is examined for failure prediction of quasi-isotropic open-hole tension laminates. Limitations of continuum representations of intra-ply damage and the effect of mesh orientation on the analysis predictions are discussed. It is shown that accurate p...

The present paper deals with optimization of hybrid fiber reinforced plastic (FRP) laminated plates subjected to impact loading using island model parallel genetic algorithm (IMPGA). Finite element method (FEM) and IMPGA have been used to obtain optimum laminates in terms of minimizing the cost, weight or both cost and weight of Graphite/Epoxy (T300/5208)–Aramid/Epoxy (Kevlar 49) hybrid laminat...

Debonding problems of externally bonded fiber reinforced polymer (FRP) sheets in flexurally FRP-strengthened reinforced concrete (RC) beams have been a concern and a research challenge since their application of this strengthening technique. Intermediate crack induced debonding is the most common failure mode which is that the debonding initiates at the critical flexural-shear or flexural crack...

In this paper, the tensile mechanical behavior and progressive damage morphology of glass-fiber-reinforced magnesium alloy laminate for different numbers holes in a temperature range 25–180 °C were investigated. addition, based on extensive tests, microscopic porous-glass-fiber-reinforced laminates at temperatures observed by finite element simulation scanning electron microscopy (SEM). Finally...

The microcracking process in laminates which have outer-ply 90◦ plies (e.g. [90m/0n]s) has some important differences from the microcracking process in laminates which lack outer-ply 90◦ plies (e.g. [0n/90m]s). Foremost among the differences is the characteristic damage state. [90m/0n]s laminates form antisymmetric or staggered microcracks while [0n/90m]s laminates form symmetric microcracks. T...

Methods for predicting organic solvents, chromic acid, mineral oil, styrene, and sulphuric acid emissions in painting, metal degreasing, wood preservation, chromium electroplating, turning, grinding, making glass fortified polyester laminates and lead batteries charging, injection moulding of polystyrene plastics, and making polyurethane foam processes are described. Experimentally introduced e...

Interleaving composite laminates with nanofibrous mat is one of the most reliable methods for increasing interlaminar fracture toughness . The present study seeks to find out how damage mechanisms carbon fiber reinforced polymers (CFRPs), subjected mode-I and mode-II tests , are affected while those modified by interleaved Polyamide 66 (PA66) electrospun layers. For this goal, acoustic emission...

Lamb waves occur in thin-walled structures two wave modes—the symmetric and the antisymmetric mode. Their oscillation on structures‘ surfaces is either phase (symmetric) or shifted by a angle of ? (antisymmetric). In this work, method developed which to compare surfaces’ relation answer question whether fiber metal laminates show same surface behavior as described for metals. The evaluation tim...