Accession Number:

ADA034451

Title:

Quantitative Schlieren Visualization.

Descriptive Note:

Doctoral thesis,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Personal Author(s):

Report Date:

1976-10-01

Pagination or Media Count:

110.0

Abstract:

A method to obtain quantitative information directly from a Schlieren image is investigated. Using the exact timed format of the video signal, the television raster is vertically scanned at a predetermined position and a sample point taken on each of the 525 horizontal lines. Using digital techniques, voltage displays corresponding to the black-white scene information are presented on an oscilloscope and plotted on an X-Y recorder. A single calibration curve gives relative sound pressure measurements. The results are compared for high frequency transmission and reflection from a thick steel plate. In addition, optimum optical arrangements and source configurations are discussed. Author

Subject Categories:

  • Photography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE