Fiber Bragg gratings have found widespread application in sensor systems, e. g. for temperature, strain or refractive index measurements. The concept of fiber Bragg gratings allows also in a simple way the realisation of arrays of such sensors. The development of such optical fiber sensor systems often requires special fibers and grating structures which may go beyond more conventional Bragg gr...

Abstract We describe an algorithm for generating fiber-filled volume elements use in computational homogenization schemes. The permits to prescribe both a length distribution and fiber-orientation tensor of second order, composites with industrial filler fraction can be generated. Typically, short-fiber composites, data on the fiber-length volume-weighted order is available. consider model wher...

Fiber-optics evanescent wave spectroscopy has become a common technique for IR absorbance spectroscopy. Evanescent waves are formed when waves travelling in a medium undergo total internal reflection, which is the basis for the attenuated total reflectance (ATR) sampling technique [1,2]. Evanescent waves decrease exponentially as they propagates further away into the sample. Optical fibers whic...

during the last decades a new class of materials named fiber/metal laminates (fmls) was introduced. it is a hybrid composite consisting of alternating thin layers of metal sheets and fiber-reinforced composite material. fmls have both low weight and good mechanical properties. in this study, the impact behavior of this attractive material is investigated. the effect of fiber angle, stacking seq...

Muscle fiber atrophy and loss is a characteristic of a wide range of neuromuscular affections. Over the past years, there has been increasing evidence that apoptotic cell death mechanisms contribute to this loss. While the initiating stimuli of apoptotic muscle fiber death such as homeostatic dysregulations and oxidative stress seems to be manifold and assumedly disease-specific the up-regulati...

Certain dicotyledon families characteristically have tracheids as their imperforate tracheary element type. Of these, six families are anomalous by having septate (or nonseptate but living) fiber-tracheids or libriform fibers coexisting with the tracheids in some species or genera (Austrobaileyaceae, Celastraceae, Convolvulaceae, Ericaceae , and Grossulariaceae, and Rosaceae) . Data from the li...

Fiber-laser sensors have potential advantages over conventional fiber-optic interferometric sensors owing to their simplicity in both optical configuration and electronic signal processing." A fiber ring laser is a good candidate for rotation-rate sensing because of the same advantages, and such a fiber-ring-laser gyroscope was demonstrated by use of Brillouin gain in the fiber.4'5 The Brilloui...