Search results for "Fiber diameter"

showing 2 items of 2 documents

Modeling strength scatter of elementary flax fibers: The effect of mechanical damage and geometrical characteristics

2011

Elementary bast fibers, apart from acceptable specific mechanical properties, possess a marked variability in geometrical and damage characteristics, which affects their axial tensile strength. A strength distribution function is derived that allows for the effect of kink bands and the scatter of fiber diameter. The distribution function is validated by applying it to the experimental strength data of both intact, carefully hand-decorticated, and damaged elementary flax fibers obtained by standard processing. The results suggest that the presence of kink bands is a limiting factor for the fiber strength.

Flax fiberDistribution functionFiber diameterMaterials scienceMechanics of MaterialsUltimate tensile strengthCeramics and CompositesBast fibreFiber strengthA fibersComposite materialNatural fiberComposites Part A: Applied Science and Manufacturing
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Risken–Nummedal–Graham–Haken instability in class-B lasers

1999

We determine analytical expressions for the Risken-Nummedal-Graham-Haken multimode laser instability outside the uniform field limit in the case of very fast polarization decay (class-B laser). A new condition for the observability of that instability, concerning the value of the cavity mirrors reflectivity, is predicted.

PhysicsFiber diameterAnalytical expressionsbusiness.industryPhysics::OpticsPolarization (waves)LaserInstabilityReflectivityAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionOpticslawUniform fieldObservabilityElectrical and Electronic EngineeringPhysical and Theoretical ChemistrybusinessOptics Communications
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