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  • A Simple Frequency Response Function
    This article will attempt to explain the basic theory of the frequency response function. This basic theory will then be used to calculate the frequency response function between two points on a structure using an accelerometer to measure the response and a force gauge hammer to measure
  • Sensors help gauge if jets are fit to fly
    As aircraft reach or exceed their planned life spans, the U.S. Air Force is turning to advanced nondestructive evaluation methods to decide whether the planes are fit for continued service. A low-profile magnetostrictive sensor detected a crack and monitored its growth on an A-10 aircraft test
  • Needle Pull-out Test
    a Manual Test Stand and an Advanced Force Gauge with the needle held in a self-tightening Wedge Grip. The ferrule was supported in a Universal Support Fixture. The customer required a relatively low-cost solution which provided flexibility for various component variations and ensured the operator
  • Medical Device Link .
    Testing and Inspection Equipment and Services A segmental-compression mechanism controlled by a microstepping linear actuator is at the core of a radial expansion-force gauge. The RX500 model is designed to measure the hoop force of both balloon- and self-expanding stent and stent graft products
  • MELT FLOW TESTING ARTICLE (Plastics Technology, July 2013)
    Though often criticized, MFR is a very good gauge of the relative average molecular weight of the polymer. Since molecular weight (MW) is the driving force behind performance in polymers, it turns out to be a very useful number.
  • Introduction to Strain Gages
    Strain Gages (gauges): What is a Strain gage? A Strain gage (sometimes refered to as a Strain Gauge) is a sensor whose resistance varies with applied force; It converts force, pressure, tension, weight, etc., into a change in electrical resistance which can then be measured. A Strain gage
  • Medical Device Link .
    , amplified, and digitized to display the force, load, pressure, displacement, or applied torque. Foil strain gauges have distinct advantages, including reduced size, a variety of gauge patterns, and temperature compensation. Low production cost and flexibility for installation on surfaces that are flat
  • Measuring Low Value Resistance / Impedance
    A broad range of systems include components with very low resistance/impedance values such as current meters, force measurement devices, temperature sensors, battery/fuel cells, etc. Such impedance values can be in the range of 0.001 ohm to 0.1 ohm (maybe even smaller). In many cases
  • Remove Operator Error - Automated 100% Inline Inspection
    with a digital gauge but variance caused by operator error was too great. Therefore automation was essential but accurate and repeatable 100% measurement of this rubber part had proved impossible until SMAC moving coil actuators were chosen as a solution: 'We explained the SMAC's inherent combination of force
  • Medical Device Link . Needleless Syringe Improved by Replacing Metal Parts with Plastic
    achieved market success, by replacing some of the unit's metal parts with plastic. Triggered by a push button, the device uses a plunger to force liquid through an orifice one-third smaller than the diameter of a 30-gauge needle. The high-velocity microjet penetrates the skin with little discomfort
  • Water Infiltration Testing Using Infrared Thermography
    will not reveal specific causes of moisture infiltration. Hose Spray Test - This test method also simulates wind-driven rain in small, segmented areas using a standard garden hose in which a calibrated nozzle is attached with a pressure gauge. The spray is directed at a specific joint, crack, or defect
  • Load Cell Enhancement Using Micron Instruments' Semiconductor Strain Gages
    A load cell is a transducer that converts an input force into a measurable electrical output. Load cells are built with different force measurement devices; however, strain gage load cells are the most common choice. Strain gages convert mechanical motion into an electronic signal. A change
  • The Click-N-Seal
    component is either over or under compressed by over or under tightening the fitting. The end result is an improper seal. A threaded fastener must often apply substantial force to the compressible component, up to 35 lbs, to achieve a proper seal. The ideal way to gauge and apply the correct amount
  • Medical Device Link .
    biological attack to extend in vivo operational lifetime. Through redoubled efforts at surface refinement and testing, there is an increasing understanding of the fundamental physicochemical processes that drive the body 's response to an implant material. It is also now possible to better gauge
  • Sensor Film Shows Assembly Clamp Needs a Redesign
    Load cell and torque/pressure-sensor maker recently had problems assembling load cells to spec. The load cells employ a metal foil strain gauge that 's adhesively bonded to the sensor. The spec calls for 50 to 75 psi of clamping pressure during assembly. Technicians ran nondestructive tests (NDT

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