Acoustic detection of crack initiation in sharply notched specimens.
Detection of initial cracking in sharply notched specimens by acoustic means, using phonograph pickup and tape recorder
SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Detection of initial cracking in sharply notched specimens by acoustic means, using phonograph pickup and tape recorder
Adaptive tracking notch filter for stabilizing structural bending signals in rocket booster control loop
Selectivity of notch filters using nonuniform RC LINES
Resistance capacitance band-stop filters with staggered notch frequencies, and design data on stop-bandwidth, stop-band attenuation, and frequencies
Load resistance effect on selectivity of notch filters using hyperbolically shaped RC lines
RC filter with staggered notch frequencies for ease of adjustment and maintenance
Strain birefringence around tektite surface notches, discussing specimen quenched in air stream from 1000 degrees C
Equations for solving initial and boundary value problems in elastoplastic flow in longitudinally stressed, axisymmetric notched rods
Analysis of notches and cracks - correlation between elastic work hardening plastic continuum theory and experiment
Ultrasonic detection and measurement of fatigue crack propagation in notched specimens of aluminum, titanium, and cobalt alloys and maraging steels
Aerodynamic drag measurements and boundary layer flow over V notches at transonic and supersonic speeds
Hydraulic controller possessing property of automatic tracking notch filter for open loop thrust engine control
Edge notch sensitivity in thin sheet nickel alloys under stress at high temperatures
Elastoplastic stress-strain behavior at notch roots in sheet specimens under constant amplitude loading
Load and temperature effects on fatigue strength of notched titanium alloy sheet for supersonic transport operation
Ultrasonic detection and measurement of fatigue cracks in notched cylinders subjected to reversed axial cyclic loading
Ultrasonic detection and measurement of fatigue cracks in notched cylinders subjected to reversed axial cyclic loading
Triangular cutting tool uses carbide tips for notching heat-treated or abrasive materials, and alloys subjected to high structural stresses. The tool is rigidly mounted in a slot of mating contour to prevent deflection during cutting of tensile specimens. No other expensive machine equipment is required.