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  • Advances in Hand-Held Ultrasonic Thickness Gages with Live Color Waveforms (A-Scan) (.pdf)
    Ultrasonic thickness gages have progressed a long way since their early development in the 1960's. The first thickness gages were large and bulky although they used the same conventional longitudinal (compressional wave) techniques still in use today. Thickness gages are used in a wide variety
  • Ultrasonic Technique and Device for Residual Stress Measurement
    System, housed in a laptop, for analysis of the influence of residual stresses on the fatigue life of welded elements. In general, the ul-trasonic method allows one to measure the residual stresses in both cases: averaged through thickness or in surface layers. The present version of UCC allows
  • Application of Ultrasonic Peening for Fatigue Life Improvement of Automotive Welded Wheels
    The efficiency of Ultrasonic Peening (UP) application for fatigue life improvement of automotive welded wheels was studied based on the results of fatigue testing of real wheels in as-welded condition and after application of the UP. During the fatigue loading, the cracks initiate in the weld toe
  • Applying Infrared Imaging Techniques to Marine Surveying ... continued
    Audio gauging or ultrasonic thickness (UT) measurements are a common non-destructive testing method employed to determine the thickness of the metal and extent of corrosion based on the known original thickness of the metal plate. During the preparation for UT measurements, by chance I pulled out
  • Flowmeters Benefit From Silicon Advances
    is made of Teflon-PFA. Clamp-On Ultrasonic Meter in Weatherproof Enclosure Model 101WP ultrasonic hybrid flowmeter uses either transit-time or phase-shift mode to measure flows in liquid-filled pipes sized -in. to 360-in. in diameter. Options include a pipewall thickness gauge and single or dual channel
  • MICRO: Defect/Yield Analysis & Metrology
    are especially valuable for CMP process development and control. The optoacoustic technique generates and detects ultrasonic waves using laser light, and, in contrast to profilometry, which measures surface topography, it measures metal thickness directly. For CMP applications, commercially available
  • Air-Coupled Acoustics: Sound PAT for Tablet Characterization
    of Drug Tablets. In: Advanced Ultrasonic Methods for Material and Structure Inspection. ISTE Science and Technical Publishing, London 316-369 (2006). Akseli, I., Cetinkaya, C. Drug Tablet Thickness Estimations Using Air-Coupled Acoustics, International Journal of Pharmaceutics. 351: 165-173 (2008
  • Polyetherimide
    techniques. Molded and extruded parts can be machined using either conventional or laser techniques and can be bonded together or to dissimilar materials using ultrasonic, adhesive, or solvent methods. Properties: The UL continuous-use listing of PEI is 338 F; gIass m transition temperature is 419
  • Medical Device Link . Electronic Pressure Control In Medical Tubing Extrusion
    based on lasers or ultrasonic sensing maintain tubing dimensions by controlling haul-off speed. One of the most critical parameters to control is the lumen inner diameter (ID) air pressure, which keeps the lumen open during cooling of the material. With multilumen tubing, each lumen requires its own
  • Product Technology News
    By integrating processes, a combination rubbing/dry-cleaning module for LCD manufacturing reduces substrate handling and conserves cleanroom space. The noncontact cleaning process uses high-frequency waves from an ultrasonic head to eliminate 95% of particles greater-than or equal-to 1 um

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