Abstract: In combination a wear indication sensor and a component of a gas turbine engine is provided. The wear indication sensor is secured to a first surface of the component of the gas turbine engine. The wear indication sensor comprises: a first terminal; a second terminal electrically connected to the first terminal; two or more of resistors electrically connecting the first terminal to the second terminal, each of the two or more resistors including a first end electrically connected to the first terminal and a second end electrically connected to the second terminal, wherein each of the two or more resistors has a known resistance; and a first electrode electrically connecting the first terminal to the first end of each of the two or more resistors; wherein the first end of each of the two or more resistors is electrically connected to the first electrode through primary conductive lines.

Abstract: An embodiment of a method includes depositing a quantity of first intermediary material onto an electrically insulating substrate in a pattern corresponding to a desired pattern of a first conductive structure. The first intermediary material is adhered to the substrate to form a first intermediate layer to maintain the desired pattern of the first conductive structure. A quantity of a precursor of electrically conductive material is deposited generally along the pattern of the first intermediate layer. Energy is applied to enable migration and consolidation of the first electrically conductive material along the pattern of the first intermediate layer, forming a functional, electrically conductive top layer. At least one of the first electrically conductive material and its precursor has a wetting angle of less than 90° relative to the first intermediate layer, and a wetting angle greater than 90° relative to the substrate. At least one of the depositing steps is an additive deposition step.

Abstract: An additive manufacturing direct writing method of producing a magnetic pattern on a substrate by extruding one or more filaments of a magnetic ink compound through a nozzle at an extrusion speed on to the substrate where there is a relative speed between the nozzle and the target substrate, and curing the plurality of filaments of magnetic ink compound using UV light and/or heat. A unipolar magnetic pattern can be produced by applying a magnetic field strength to the cured magnetic pattern. A bipolar magnetic pattern is produced by folding a unipolar magnetic pattern in half about a fold crease on the substrate, creating a sandwich of alternating magnetic elements between the substrate. The magnetic flux density can be lateral or perpendicular to the substrate. A magnetic position sensor system includes the magnetic pattern and a magnetic sensor.

Abstract: A heating circuit assembly and method of manufacture includes an electrically conductive heating element having a pattern. An electrically non-conductive substrate is additive manufactured and secured to the element for structural support. The substrate has a topology that generally aligns with the pattern of the element thereby reducing the assembly weight and minimizing substrate material waste.

Abstract: A composite magnetic material includes magnetic particles with a first shape and a volume fraction. The composite material also includes a polymeric matrix surrounding the particles and has fractional remanence greater than 0.5. In an embodiment, a dispersion of magnetic particles in a continuous curable polymer matrix includes a particle volume fraction of greater than 60% and a fractional remanence of 0.5 or higher.

Abstract: An apparatus and method for detecting a short in a blade of a gas turbine engine, the apparatus including: a first plate configured to form a first capacitor with the protective sheath when the apparatus is located proximate to the blade; a second plate configured to form another capacitor with a portion of the airfoil when the apparatus is located proximate to the blade; and a voltage source electrically connected to the first plate and the second plate.

Abstract: A sensor assembly for a gas turbine engine according to an example of the present disclosure includes, among other things, a substrate layer formed on a localized surface of a rotatable gas turbine engine component, and at least one pair of transducers deposited on the substrate layer.

Abstract: A fault detection assembly for an aircraft system according to an example of the present disclosure includes, among other things, a transmitter that communicates an electrical input signal to a first portion of an electrical connector, the first portion moveable between a fully seated position and a fully unseated position relative to a second portion of the electrical connector to define a range of insertion depths, a receiver that senses an electrical output signal relating to the electrical input signal, and a comparison module that determines an insertion depth in the range of insertion depths based on a change in a resonant frequency of the electrical output signal with respect to the electrical input signal.

Abstract: A sensor assembly for detecting open or closed state in windows and doors includes a passive infrared sensor configured to produce a change in an electrical signal based on a change in infrared radiation incident on the passive infrared sensor. A lens is operatively connected to the passive infrared sensor. At least a portion of the lens is configured to be mounted in an interface between a frame and a door or window mounted to open and close within the frame. The lens is configured to guide ambient infrared radiation to the passive infrared sensor at a first level when the door or window is closed and at a second level when the door or window is open or ajar.

Abstract: A system for direct writing a conformal or free-form magnet includes producing a magnetic ink compound by mixing an photopolymer base and a magnetic material powder, extruding a layer of the magnetic ink compound through a nozzle on to a target substrate to form a layer, soft-curing the layer by exposing the layer to a first light, repeatedly extruding a layer and soft-curing the layer, then post-curing the magnet by exposing the magnet to a second light and an elevated temperature.

Abstract: A method of making a carbon allotrope heater element for ice protection includes imparting the heater element with a wetting layer, adding a metallic element, which is melted and wets the wetting layer such that a bus bar attachment is made on at least a portion of the carbon allotrope heater element.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: A detector includes a sensor configured to sense a moving object in at least one of the electromagnetic spectrum and the acoustic spectrum. A fixed coded aperture of the detector is disposed between a moving object and the sensor.

Abstract: A volumetric occupancy counting system that may be applied to a security system of a building management system includes a focal plane array (62) and a Fresnel lens (75). The focal plane array has a plurality of radiant energy sensors (82) configured to convert radiant energy into an electrical signal. The Fresnel lens has a plurality of lenslets (02) each including a focal length configured to map one occupant into a pre-determined number of radiant energy sensors of the plurality of radiant energy sensors.

Abstract: In combination a wear indication sensor and a component of a gas turbine engine is provided. The wear indication sensor is secured to a first surface of the component of the gas turbine engine. The wear indication sensor comprises: a first terminal; a second terminal electrically connected to the first terminal; two or more of resistors electrically connecting the first terminal to the second terminal, each of the two or more resistors including a first end electrically connected to the first terminal and a second end electrically connected to the second terminal, wherein each of the two or more resistors has a known resistance; and a first electrode electrically connecting the first terminal to the first end of each of the two or more resistors; wherein the first end of each of the two or more resistors is electrically connected to the first electrode through primary conductive lines.

Abstract: A particulate for an additive manufacturing technique includes metallic particulate bodies with exterior surfaces bearing a polymeric coating. The polymeric coating is conformally disposed over the exterior surface that prevents the underlying metallic body from oxidation upon exposure to the ambient environment by isolating the metallic particulate bodies from the ambient environment. Feedstock materials for additive manufacturing techniques, and methods of making such feedstock, are also disclosed.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: A gas turbine engine component includes a conformal surface. An array of resistance temperature detector (RTD) sensors is disposed across at least a portion of the conformal surface and a plurality of printed circuit traces are deposited on the conformal surface. The printed circuit traces connect each of the RTD sensors to a controller via a corresponding four wire circuit. Each circuit trace in the plurality of circuit traces extends to a circumferential edge of the conformal surface.

Abstract: An apparatus system and method for an electronic component made with additive manufacturing processes and a foil substrate is provided. The electronic component may include one or more foil substrates and one or more elements. The elements may be produced by an additive manufacturing process. Moreover, the elements may be produced in the same plane or out of plain with one or more foil substrates. The elements may also be various structures, including, for example, connectors, electrical components (e.g., a resistor, a capacitor, a switch, and/or the like), and/or any other suitable electrical elements and/or structures.

Abstract: An apparatus and method for detecting a short in a blade of a gas turbine engine, the apparatus including: a first plate configured to form a first capacitor with the protective sheath when the apparatus is located proximate to the blade; a second plate configured to form another capacitor with a portion of the airfoil when the apparatus is located proximate to the blade; and a voltage source electrically connected to the first plate and the second plate.