Measurement of Textile Cord Count for Rubber Sheet Calendering

    公开(公告)号:US20240303797A1

    公开(公告)日:2024-09-12

    申请号:US18120332

    申请日:2023-03-10

    Abstract: Technique for calculating cord parameters of a textile reinforced rubber sheet moving in the machine direction includes: (a) illuminating an area on a side of the sheet with radiation; (b) obtaining a digital image of an illuminated area; (c) generating a digital image of the outer surface; and (d) calculating cord parameters. The elongated textile cords are preferably parallel to each other the elongated textile cords are orientated in a cross direction which is perpendicular to the machine direction. Scanning or static camera with a light source can be employed; the light is directionally perpendicular to the plurality of cords. The digital image comprises a 2D profile, 3D map, or gray scale profile or map and the images are analyzed typically with Fast Fourier transform or sinusoidal fitting techniques. Cord count per unit length, cord spacing, the presence of missing cords, and/or the presence of shifted cords can be determined.

    X-ray-based determining of weights for coated substrates

    公开(公告)号:US11519867B2

    公开(公告)日:2022-12-06

    申请号:US16707374

    申请日:2019-12-09

    Abstract: A measurement apparatus includes an x-ray sensor including an x-ray source having a high voltage power supply for emitting an x-ray spectrum and an x-ray detector for providing a measured x-ray signal value responsive to the x-rays received after transmission through a coated substrate including a sheet material having a coating material thereon. A second sensor is a beta gauge or infrared sensor for providing a second sensor signal that includes data for determining a total weight per unit area of the coated substrate or of the sheet material A computing device receives the measured x-ray signal value and the second sensor signal configured to implement an x-ray based calculation that utilizes absorption coefficients for the coating material and sheet material, the measured x-ray signal value, the x-ray spectrum, and the weight measure as a calculation constraint, for computing at least the weight per unit area of the coating material.

    APPARATUS FOR COMPOSITE SHEET WEIGHT DETERMINATIONS

    公开(公告)号:US20200096380A1

    公开(公告)日:2020-03-26

    申请号:US16560170

    申请日:2019-09-04

    Abstract: A measurement apparatus for weight measuring composite sheet including a sheet material having a second material thereon as a coating and/or as embedded particles therein. The apparatus includes an x-ray sensor for providing an x-ray signal from x-ray irradiating the composite sheet and an infrared (IR) sensor for providing an IR signal from IR irradiating the composite sheet. A computing device is coupled to receive the x-ray signal and the IR signal that includes a processor having an associated memory for implementing an algorithm, where the algorithm uses the x-ray signal and the IR signal to compute a plurality of weights selected from a weight of the sheet material, a weight of the second material, and a total weight of the composite sheet.

    FOUL-RESISTANT COATING OF WINDOWS FOR OPTICAL PARTICLE SENSING

    公开(公告)号:US20200088624A1

    公开(公告)日:2020-03-19

    申请号:US16547103

    申请日:2019-08-21

    Abstract: A system for in-situ monitoring of particles in a process fluid includes a flow channel having a window for flowing the process fluid therethrough. The window includes an inner surface having a coating thereon that reduces a buildup rate of the particles on the inner surface. A light source is for directing a polarized beam along a first beam path through the window into the process fluid such that an output beam emerges from the process fluid along a second beam path. A polarizing filter positioned in the second beam path is for filtering the output beam. A photodetector is for detecting the output beam after passing the polarizing filter that generates signals that represent images of the particles in the process fluid. A controller coupled to the photodetector is for analyzing the signals to determine at least one parameter related to the particles in the process fluid.

    Apparatus for simultaneously determining weights of composite sheets

    公开(公告)号:US11333544B2

    公开(公告)日:2022-05-17

    申请号:US16443543

    申请日:2019-06-17

    Abstract: A measurement apparatus includes a beta gauge for generating a first sensor response signal from a composite sheet including a sheet material having a coating thereon including a high-z material or the sheet material has particles including the high-z material embedded in the sheet material. A second sensor being an x-ray or an infrared (IR) sensor provides a second sensor response signal from the composite sheet. A computing device is coupled to receive the first and the second sensor response signal that includes a processor having an associated memory for implementing an algorithm that uses the first and the second sensor response signal to simultaneously compute two or more weight measures selected from (i) a weight per unit area of the high-z material, (ii) a weight per unit area of the sheet material, and (iii) a total weight per unit area of the composite sheet.

    Thickness measurement with inductive and optical displacement sensors

    公开(公告)号:US11143495B2

    公开(公告)日:2021-10-12

    申请号:US16569214

    申请日:2019-09-12

    Abstract: A sensor system includes an eddy current sensor including at least one coil with excitation electronics coupled across the coil. An optical displacement sensor is secured to the eddy current sensor so that a vertical distance between the sensors is fixed. The optical displacement sensor is located on top of and concentric with the coil so that a measurement axis of the optical displacement sensor is collinear with an axis of symmetry of the coil. A computing device including a processor and memory is coupled to receive sensor data from the eddy current sensor and the optical displacement sensor that is adapted for analyzing the sensor data obtained from measuring a coated substrate including a coating layer on at least one side of a metal substrate to determine at least a thickness of the coating layer.

    X-RAY-BASED DETERMINING OF WEIGHTS FOR COATED SUBSTRATES

    公开(公告)号:US20210172888A1

    公开(公告)日:2021-06-10

    申请号:US16707374

    申请日:2019-12-09

    Abstract: A measurement apparatus includes an x-ray sensor including an x-ray source having a high voltage power supply for emitting an x-ray spectrum and an x-ray detector for providing a measured x-ray signal value responsive to the x-rays received after transmission through a coated substrate including a sheet material having a coating material thereon. A second sensor is a beta gauge or infrared sensor for providing a second sensor signal that includes data for determining a total weight per unit area of the coated substrate or of the sheet material A computing device receives the measured x-ray signal value and the second sensor signal configured to implement an x-ray based calculation that utilizes absorption coefficients for the coating material and sheet material, the measured x-ray signal value, the x-ray spectrum, and the weight measure as a calculation constraint, for computing at least the weight per unit area of the coating material.

    Foul-resistant coating of windows for optical particle sensing

    公开(公告)号:US10921235B2

    公开(公告)日:2021-02-16

    申请号:US16547103

    申请日:2019-08-21

    Abstract: A system for in-situ monitoring of particles in a process fluid includes a flow channel having a window for flowing the process fluid therethrough. The window includes an inner surface having a coating thereon that reduces a buildup rate of the particles on the inner surface. A light source is for directing a polarized beam along a first beam path through the window into the process fluid such that an output beam emerges from the process fluid along a second beam path. A polarizing filter positioned in the second beam path is for filtering the output beam. A photodetector is for detecting the output beam after passing the polarizing filter that generates signals that represent images of the particles in the process fluid. A controller coupled to the photodetector is for analyzing the signals to determine at least one parameter related to the particles in the process fluid.

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