Concept

Fiber crop

Related publications (131)

Correlation of index changes with stress changes in fibers containing UV-written Bragg gratings

Strong correlation between index change and stress change in irradiated optical fibers is reported. The stress increases with fluence. Stress changes and hence index changes seem to be due to a compaction of the fiber core ...

Ist. Int. Comun1994

IN-SITU FIBER STRENGTHS IN CERAMIC-MATRIX COMPOSITES FROM FRACTURE MIRRORS

William Curtin

The in situ breaking stresses of pulled-out fibers on the fracture surface of a fiber-reinforced composite can be determined ex post facto from a measurement of the fracture mirrors on the surfaces of the fibers. Here, the relationship between the resultan ...

1994

FIBER PULL-OUT AND STRAIN LOCALIZATION IN CERAMIC MATRIX COMPOSITES

William Curtin

THE MECHANICAL properties of ceramic matrices uniaxially reinforced with strong continuous fibers depend on a wide variety of material parameters: the fiber and matrix elastic moduli, the matrix toughness, the statistical fiber strength, the fiber radius a ...

1993

THEORY OF MECHANICAL-PROPERTIES OF CERAMIC-MATRIX COMPOSITES

William Curtin

A theory is presented to predict the pullout work and ultimate tensile strength of ceramic-matrix composite (CMC) materials tested under uniaxial tension as functions of the underlying material properties. By assuming that the fibers fracture independently ...

1991

Chemical stability of zirconia-stabilized alumina fibers during pressure infiltration by aluminum

Andreas Mortensen

Metal matrix composites composed of high-purity aluminum and Du Pont PRD-166 continuous zirconia-stabilized polycrystalline alumina fibers are fabricated by liquid metal infiltration using three different casting procedures. The microstructure of the compo ...

1991

Birefringence measurements in fibers without polarizer

Luc Thévenaz, Nicolas Gisin

A method for measuring the delay between polarization eigenmodes in either high- or low-birefringence fibers is described. The main advantage of this interferometric method is its ability to perform the measurements without the use of any polarizing device ...

1989

Interface chemistry of inorganic composite materials

Andreas Mortensen

Interfaces in metal and ceramic composites differ from interfaces in polymer matrix composites inasmuch as: (i) fiber degradation due to chemical reaction with the matrix at processing temperatures is frequent and (ii) bonding at the interface is generally ...

Publ by Riso Natl Lab1988

Determination of the individual strain-optic coefficients in single-mode optical fibers

René Dändliker

A method to determine the individual strain-optic coefficients in single-mode fibers is described. It is based on two photoelastic experiments, namely, the polarimetric measurement of optical activity induced by mechanical twist and the interferometric mea ...

1988

All-fiber interferometer for chromatic dispersion measurements

Luc Thévenaz

An all-fiber interferometric method for chromatic dispersion measurements in meter-length single-mode fibers is presented. In a Michelson setup the physical length of a reference fiber was varied so as to obtain adjustable optical delay. Time resolution, e ...

1988

An immunohistochemical study of six biologically active peptides in the human brain

Pierre Magistretti

The morphological characteristics and distribution patterns of neurons immunoreactive for antisera against six biologically active peptides were examined by indirect immunofluorescence in the human brain. The peptides studied were: met-enkephalin, leu-enke ...

1986

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