A high speed photo recording system is now being used in a basic study of crack propagation velocities during brittle fractures occurring in transparent materials. Velocity measurements of 7.1 x 104 cm/sec. have been recorded with time resolution of less than 1 microsecond. The camera, lighting system, trigger circuit, impact equipment, and planned future studies of brittle fracture phenomena will be discussed.
R. Wayne Anderson,
E. T. Dumitru,,
C. B. Arends,
"High Speed Photo System to Record Crack Propagation Velocities in Brittle Fractures," Optical Engineering 2(5), 205180 (1 July 1964). https://doi.org/10.1117/12.7971280