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Showing 1 to 12 of 12 for “"Shear Lag Model"”.
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Investigation of Oxide Fiber/oxide Matrix Composites With a Weak Interphase
Interface properties of four kinds of fiber model systems were obtained by analyzing pushout data with the linear model, the shear-lag model, and the Liang-Hutchinson model. These interface properties include interface fracture energy, coefficient of friction, clamping pressure, interface debond …
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Interfacial Mechanics in Fiber-Reinforced Composites: Mechanics of Single and Multiple Cracks in CMCs
… at the interface. The Axisymmetric Damage Model (ADM), a newly-developed numerical technique, is used to obtain the strain energy in the cracked composite. The results are compared with a commonly-used analytic solution provided by He and Hutchinson (HH), and also with experimental data on …
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Stiffness reduction resulting from transverse cracking in fiber- reinforced composite laminates
… near-saturation damage states. Two analytical models were evaluated. A one dimensional shear lag model was used to predict longitudinal stiffness as a function of crack density for the [0,90₃]<sub>s</sub> and 90₃,0]<sub>s</sub> laminates. Correlation between theory and experiment was good. A …
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Experimental and Theoretical Studies of Friction and Adhesion of Elastomeric Materials
… and quantitatively predicted using an extended shear lag model. We believe that this study provides insights into the effect of axial compliance on the frictional response of materials, paving the way for design and optimization of systems where the static and kinetic friction forces play an …
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Analysis of matrix damage in single fiber composites
… with/without interfacial debonding. A consistent shear-lag model in cylindrical coordinates is developed to achieve this. The governing equations are solved using an eigen value technique. When a fiber is partially is debonded, compressive stresses due to resin shrinkage and difference in thermal …
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Fracture and toughening of soft elastic composite
… proposed for soft elastic foams. A phase-field model for the fracture processes in soft elastic structures is further developed to study the crack propagation in an elastic foam, and results have all achieved good agreement with the scaling law. Simulations have shown that an effective fracture …
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Piezo-induced fatigue of solder joints
… Analytical results are derived for the plastic shear strain at the free edges of such a specimen using a shear lag model. Results are also presented for the strain energy release rate for steady state crack growth. Experimental results and observations are presented for the damage processes in …
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Scaling Effects on Damage Development, Strength, and Stress-Rupture Life on Laminated Composites in Tension
… size. All 24 cases were predicted using Zhang's shear-lag model and data generated from cross-ply tests. Laminate strength was controlled by the initiation of a triangular-shaped local delamination of the surface angle plies. This delamination was predicted using O'Brien's strain energy release …
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Mechanical Characterization of Coating-Interconnect Interfaces and Anode-Electrolyte Interfaces for Solid Oxide Fuel Cells
… specimen are used to quantify the interfacial shear strength from a shear lag model. In addition, the onset strain of coating spallation is incorporated in an energy based fracture mechanics model to obtain the interfacial fracture energy. Images from scanning electron microscopy (SEM) of the …
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ASPECTS OF RECYCLING OF CARBON FIBRE REINFORCED POLYETHERETHERKETONE (CF/PEEK)
… experimental results with a simple mathematical model, the Cox Shear-Lag model. Mechanical testing such as tensile and flexural tests were conducted. Differential Scanning Calorimetry (DSC) was used to investigate the recycled material's crystallinity and also its transition temperature. Other …
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Multiscale Damage Modelling of Natural Fibre Composites
… can be achieved through an integrated multiscale model development coupled with experimental tests at various scales. Computational multiscale modelling techniques are specifically meant to deal with the multiple scale nature of material failures, and have been applied to the failure of …
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Modelli meccanici per l'innesco e la propagazione delle valanghe di neve
… descrizione dello stato dell’arte in materia di modelli per l’innesco e la propagazione delle valanghe di neve, la presente tesi si focalizza sul fenomeno dell’innesco, seguendo prima un approccio meccanico tensionale/energetico per poi passare ad un approccio fisico-statistico. Ciò è dovuto …