Abstract: The invention relates to a measuring arrangement for testing workpieces, having at least one optical fibre (11, 12, 13, 14, 15, 16, 17, 18) assigned to a workpiece (10), in which or each the optical fibre (11, 12, 13, 14, 15, 16, 17, 18) is designed as a Bragg grating sensor, and in which the or each optical fibre (11, 12, 13, 14, 15, 16, 17, 18) is arranged in the region of a surface of the workpiece.

Abstract: Water dilutable amine curing agents for aqueous epoxy resin dispersions, comprising a combination of an epoxide-amine adduct with an emulsifier, the epoxide-amine adduct being obtainable by reacting a polyepoxide with a reaction product of an amine and an epoxide component or an amine and subsequent reaction with an epoxide component, the amount of amine being chosen such that the number of nitrogen-attached hydrogen atoms the number of epoxide groups by a factor of from 2 to 10, and the emulsifier being obtainable by reacting diepoxides or polyepoxides with compounds that are at least difunctional with respect to epoxides, optionally with compounds D that are monofunctional with respect to epoxides, and with amines G which contain at least one tertiary and at least one primary or at least two secondary amino group(s).

Abstract: Water dilutable amine curing agents for aqueous epoxy resin dispersions, comprising a combination of an epoxide-amine adduct with an emulsifier, the epoxide-amine adduct being obtainable by reacting a polyepoxide with a reaction product of an amine and an epoxide component or an amine and subsequent reaction with an epoxide component, the amount of amine being chosen such that the number of nitrogen-attached hydrogen atoms the number of epoxide groups by a factor of from 2 to 10, and the emulsifier being obtainable by reacting diepoxides or polyepoxides with compounds that are at least difunctional with respect to epoxides, optionally with compounds D that are monofunctional with respect to epoxides, and with amines G which contain at least one tertiary and at least one primary or at least two secondary amino group(s).

Abstract: A capacitive measuring system for measuring the distance between two relatively movable parts based on measurement of capacitative charge comprising a measuring sensor which forms one plate of the capacitor whose gap is to be measured. With the position of the sensor face in the fixed part of casing being known, the plate distance of the gap capacitor provides a direct measure of the gap.

Abstract: A capacitive measuring system including a sensor for measuring the clearance between a movable part and a fixed casing facing the movable part, the sensor is secured in the casing and has an active face facing the movable part to constitute a capacitor whose charge is representative of the clearance. A triaxial cable connects the sensor to an amplifier. The triaxial cable has a central conductive core and two surrounding conductors insulated from one another and from the core. The sensor comprises a central body including a disk with a surface constituting the active face of the sensor made from a metal of the platinum group (VIII) or an alloy thereof. The central body is connected to the core of the triaxial cable. Two conductive shields surround the central body and are connected to respective conductors of the triaxial cable. An electrical shielding or insulation of ceramic or glass is between the central body and the conductive shields.

Abstract: A method and apparatus for measuring pressures in a gas turbine engine comprising a stator, a hollow rotatable shaft carrying a rotor and a first sensor having a plurality of inputs for pressure measured at respective test points on the rotor.

Abstract: A temperature measuring probe which includes thermo-wires extending between bead-like temperature sensors and a coupling device which connects the probe to indicating or control equipment. A terminal member is provided at one end of the probe body with an arc-shaped transition member being provided between the probe body and the terminal member. The transition member has a substantially round cross-sectional configuration with the terminal member having a shallow rectangular cross-sectional configuration so that a substantially laminar flow of coolant through the probe body is achieved.