NACA Research MemorandumNational Advisory Committee for Aeronautics, 1955 - Aerodynamics |
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believed to eliminate Benjamin Benjamin II brittle high-temperature mate cantilever beam specimen Ceramics Committee for Aeronautics consists of dropping Copies obtainable describes a device Deutsch and N. H. development of brittle device for measuring device is believed diagrs DROP IMPACT TEST dropping a hammer E54D13 NACA NACA E54D13 National Advisory electrode elevated temperatures eliminate extraneous energies focused attention free end G. C. Deutsch George hammer from increasing high-temperature materials IMPACT DROP TEST impact resistance impact strength IMPACT TEST BAR inch-pounds increasing heights March materials are given measuring very small method of testing N. H. Katz NACA NACA RM NACA RM E54D13 National Advisory Committee norm and elevated obtainable from NACA pact Pinkel Properties 5.2 report describes Representative values rials has focused RM E54D13 NACA RM E54D13 National shown in figure small values specimen fractures STRENGTH OF CERMETS strikes testing consists toss energy values of impact washers Washington NACA RM
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Page 9 - A DROP TEST FOR THE EVALUATION OF THE IMPACT STRENGTH OF CERMETS.
Page 9 - The devic is believed to eliminate extraneous energies, such < the "toss energy" from the impact strength. The method of testing consists of dropping a hammer from increasing heights so that it strikes near the free end of a cantilever beam specimen. The energ of the hammer when the specimen fractures is the impact strength.