Shear loader and performing pure mode II or mixed mode I and mode II shear loading

    公开(公告)号:US10761002B1

    公开(公告)日:2020-09-01

    申请号:US16409946

    申请日:2019-05-13

    Abstract: A shear loader subjects a shear load on a sample and includes: a first shearer including: a first shearing face that provides a shearing plane; a first mating face; and a first knife edge; a second shearer including: a second shearing face; a second mating face; and a second knife edge, the first shearer and the second shearer having relative motion to provide the shear load to the sample; a first load cell; and a second load cell, the first load cell and the second load cell having relative motion in a load direction that is orthogonal to the shearing plane and orthogonal to the shear direction, such that relative motion of the first load cell and the second load cell along the load direction subjects the sample to a side load along the load direction; and a sample region that receives sample bounded by the mating faces and load faces.

    Force measurement system for exercise equipment

    公开(公告)号:US10732058B2

    公开(公告)日:2020-08-04

    申请号:US16051373

    申请日:2018-07-31

    Inventor: Yu-Yu Chen

    Abstract: A force measuring system for exercise equipment provided for using in an exercise equipment, the system includes a measured body, a force sensor, a circuit board; a Wheatstone bridge, a data transmission module and a power module disposed on the circuit board; and a receiving device. The power module provides a working power supply. The measured body is connected to the exercise equipment. The force sensor is disposed on the measured body, and the resistance value thereof changes along with a deformation amount of the measured body. The Wheatstone bridge is electrically connected to the force sensor to output a measurement signal. The data transmission module transmits a force taken information to the receiving device, wherein the force taken information is obtained according to the measurement signal.

    Towing systems and methods using magnetic field sensing

    公开(公告)号:US10670479B2

    公开(公告)日:2020-06-02

    申请号:US16136837

    申请日:2018-09-20

    Abstract: A magneto-elastically-based active force sensor, used with a tow coupling between a towed and a towing vehicle, which outputs a signal useful for determining forces acting on the coupling. The outputted force information may be provided by processor-enabled embedded software algorithms that take inputs from the force sensor and other sensors, may be used by one or more vehicle systems during operating of the vehicle, such as engine, braking, stability, safety, and informational systems. The force sensor includes directionally-sensitive magnetic field sensing elements inside the sensor, and shielding may be used around the sensors to reduce the influence of external magnetic fields on the sensing elements. The force sensor may be used with different tow coupling devices installed on different types of automobile cars and trucks.

    Method and apparatus for measuring reaction forces

    公开(公告)号:US10568550B2

    公开(公告)日:2020-02-25

    申请号:US14419909

    申请日:2013-07-24

    Applicant: DORSAVI LTD

    Abstract: Apparatus is disclosed for monitoring, measuring and/or estimating a force applied to a body or body part of a vertebral mammal. The apparatus includes an acceleration sensor for measuring acceleration of the body or body part relative to an inertial frame of reference and for providing data indicative of the acceleration. The acceleration sensor includes at least one inertial sensor, a memory device adapted for storing the data, and a processor adapted for processing the data to evaluate a reaction force that correlates to the data. The processor may be configured to execute an algorithm for evaluating the reaction force, based on one or more correlation components such as mass, speed and/or velocity associated with the body or body part. A method of monitoring and/or estimating a force applied to a body or body part of a vertebral mammal is also disclosed.

    Optical method and arrangement for measuring residual stresses, in particular in coated objects

    公开(公告)号:US10481020B2

    公开(公告)日:2019-11-19

    申请号:US15572360

    申请日:2016-05-20

    Abstract: The present invention relates to a method and an apparatus for establishing residual stresses in objects, in particular in coated objects, and to a method and an apparatus for coating objects. The method comprises: impinging a surface (8) of the object (5) with laser light and generating a hole or a pattern of holes and/or locally heated points in the object (5); establishing the surface deformations by an optical deforming measuring method after the object (5) is impinged by laser light; establishing the residual stresses present in the object (5) from the measured surface deformations, wherein the generation of the hole pattern is carried out by an optical scanning apparatus which comprises an optical deflection and/or modulation arrangement for controllable deflection and/or modulation of the laser light, and/or a focusing arrangement for controllable focusing of the laser light.

    Gap compensation for magnetostrictive torque sensors

    公开(公告)号:US10473536B2

    公开(公告)日:2019-11-12

    申请号:US15675269

    申请日:2017-08-11

    Abstract: A gap compensated torque sensing system and methods for using the same are provided. The system can include a sensor head in communication with a controller. The sensor head can contain a torque sensor and a proximity sensor coupled to the sensor head. The torque and proximity sensors can each sense magnetic fluxes passing through the target and a gap between the sensor head and the target. The controller can estimate torque applied to the target from magnetic fluxes sensed by the torque sensor. The controller can determine an improved gap measurement that is independent of electromagnetic properties of the target from magnetic fluxes sensed by the torque and proximity sensors. The estimated torque can be modified by the improved gap measurement to compensate for changes in magnetic properties of the target due to variations in the gap. In this manner, the accuracy of the torque measurements can be increased.

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