Techniques for Pressure Pulse Measurement and High-Speed Photography in Ultrasonic Cavitation
Abstract
A photographic system has been developed and applied to the study of cavitation bubble collapse. Sequences of 700 pictures at a rate of one million pictures per second, and less than 10 exp -7 second exposure time have been obtained. Resolution is estimated to be better than 0.01 cm. Photoelastic photographs have also been taken under the above conditions. Ultrasonic cavitation bubbles have been photographedcollapsing on the surface of a photoelastic solid, and the resulting strain wave in the solid has been observed in the photographs. Dynamic properties of a photoelastic material have been obtained in order to permit quantitative measurements of transient waves in solids by this method. Photocell detection of photoelastic strain fringes has provided information on the duration of strain pulses in a solid due to cavitation bubble collapse.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1955
- Accession Number
- AD0075061
Entities
People
- Albert T. Ellis
Organizations
- California Institute of Technology