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  • Tension Testing of Metallic Materials (ASTM E8)
    ASTM E 8 describes tension testing methods to determine yield strength, yield point elongation, tensile strength, elongation and reduction of area of metal products. It applies to metallic materials in any form, including: sheet, plate, wire, rod, bar, pipe and tube. For each of these specimen
  • Weighing Single Atoms?
    applied to the plate causes the tube to vibrate, while a dc voltage on the tube proportionally increases tension and vibration frequency. Current flow is an indicator of tube motion. Researchers have used the technique to make oscillators that tune over a range from 3 to 200 MHz. Such a tunable
  • Gas Spring Technical Info: Do's and Don'ts
    Use standard gas springs rod down, i.e. the spring should be mounted so that it spends most time in a rod down position, within 60° of vertical, thus ensuring the seal stays lubricated. For tension springs the exact opposite is true, i.e. use rod up. Once installed, test at least every three months
  • Sneaking up on a solution
    velocity that stops suddenly. "Estimate the peak translation or deflection of the free end of the bar during one complete cycle of the tension wave the rod bounces off the rigid stop, " says Dearth. He suggests neglecting damping. "Our solution will be valid for one complete wave reflection. In the real
  • Actuators that mimic nature
    of the cross-sectional area to produce matching forces. The Fluidic Muscle is connected to a lever. As the muscle contracts, the lever lifts and puts tension on the belt. Pneumatic actuators are commonly used for linear motion. Unfortunately they depend on moving parts and seals that make them susceptible to leakage

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