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MAE 105 - Fall '04
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Hopkinson Bars

 
Extensive CEAM facilities for testing the dynamic response of materials include 5 Hopkinson bars ranging in size from 5 mm to 75mm in diameter. These include uniaxial compression and tension as well as fully dynamic triaxial compression. The facilities allow test temperatures ranging from -196C to 1000C with dynamic recovery of the specimens. CEAM also has 4 light gas guns, from 1 inch to 6 inches in diameter and velocities exceeding 1000 meters/second. In addition CEAM has state of the art diagnostics which include 150KV and 450KV Flash X-ray systems, VISAR, and both a Cordin 2 million frame per second film camera and the Imacon 200 High Speed Digital Framing Camera.


Dynamic testing facilities with multiple Hopkinson bars (left) and ballistic gas guns (right).