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  • Break it on purpose
    table reaches accelerations up to 15 A close-up view of a unit under test shows the vibration clamp bars that secures the unit to the vibration table and the forced-air ducts used to heat or cool the unit. Equipment used to operate and monitor the unit under test sits outside the Halt chamber. Cables
  • Drive Helps Gear Dyno Keep its Cool
    and load. Such tractor dynos lack control sensitivity needed for the work. A differential break-in test, for example, runs 2 hr, during which technicians plot differential temperature versus time, a measure of drag torque. The tests also heat the hydraulic oil, changing its viscosity and, hence
  • Arthur G. Russell Co. and NTI Announce a Dual Break Through in Nano Fiber Production using New Die Design and Inexpensive Polymers.
    Dateline Thursday October 1, 2009 A series of tests at University of Tennessee lab under the direction of Dr. Gajanan Bhat produced nano-fibers in PP and two polyesters, PET and PBT. The latter are inexpensive fibers never before melt blown into nano-fibers so far as is known. The die was designed
  • Bad Cable or Bad Test Fixture?
    A common testing problem is determining whether a reported failure is truly a problem with the Device-Under-Test or a problem with the test interface. Test connectors wear out with repeated usage, pins break, plating is worn off and intermittent readings can occur. Any defects in the test interface
  • BMW - Using Virtual Test Rigs for Loads Prediction
    The "Holy Grail" for many durability engineers is to reliably predict where and when their products will break - long before the first hardware prototype is built. To do so would dramatically shorten the durability process and help engineers to get higher quality products to market faster and more
  • Shear Strengths of Representative Bayer MaterialScience Thermoplastics (.pdf)
    ) and welded joints. All the shear strength values were established on the basis of ASTM D 732-02. The test specimens required with a thickness of 1.6 mm were produced by injection molding. Additionally the yield stress respectively the stress at break were established for the same materials in tensile tests
  • Summary of Echo Probe Low-Temperature Testing (.pdf)
    In order to test the durability of the Echo Probe wires at low temperatures, a simple procedure was followed. Probes were placed in an ultra-low temperature freezer until they had reached a known temperature. Then they were bent by hand to test if they would break.
  • Medical Device Link .
    abnormally thick, sticky mucus that clogs the lungs and leads to life-threatening pulmonary infections. These thick secretions obstruct the pancreas as well, preventing digestive enzymes from reaching the intestines to help break down and absorb food. CFTR multimutation screening
  • Under the weather
    development schedules now land new products on the showroom floor at break-neck speed. Gone are the days when designs had the luxury of long in-depth testing programs. Accelerated development schedules present a conundrum of sorts when it comes to the effects of weathering. The forces of nature haven't
  • White Paper - Push/Pull Testing
    Overview of the Push/Pull test procedure and its role in the caster, wheel and material handling industry. Ergonomics are critical in many applications and this testing device serves as a measuring stick for both initial break away forces and sustained movement forces.