some of the tests thetruck wheel is al-lowed to drop offthe end of a 2-in.plank directly ontothe jack and in oth-ers it is driven overan obstruction inthe form of a squaresectional bar lyingdirectly over thejack. The force ofthe blow is trans-mitted to a pre-pared copper cylin-der, the deforma-tion… … Figs. 3 and 4—The two methods of making impact tests (drop test and obstruction test) copper cylinder to successively increasing pressures ina testing machine and taking note of correspondingpressures and deformations, it is possible to effect acalibration. It is realized that this method does…
Automobiles · Aeronautics
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