ABSTRACT
In this Hertzian fracture study 5mm thick soda-lime glass plates were impacted by 5 mm steel projectiles with velocities of ~30 to ~91 m/s at angles between 45º and 60º -- 0/360º being vertical. Results were recorded photographically for comparison. Varied and diverse results were obtained beyond standard Hertzian fracture nomenclature, i.e., the crater, mirror, mist, hackle and Wallner line norm. Characteristics were logged and if necessary denotative titles were assigned. Multiple unnamed physicalities were discerned and are listed in fifteen main physical categories....
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A.T. Dowd Research
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The Physicalities of Hertzian Fractures
by JAMES BYOUS
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