RECENT ADVANCES IN DYNAMIC PHOTOELASTICITY,

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Abstract:

The application of photoelasticity to dynamic stress analysis generally involves the use of high-speed photography. The equipment and techniques which were developed for studying transient stresses in low modulus photoelastic materials are reviewed briefly. The emphasis of the paper is on the use of a special dual-beam polariscope for obtaining simultaneous normal and oblique incidence stress patterns in conjunction with a highspeed framing camera, to study stress wave propagation in high modulus photoelastic materials subjected to explosive loads. Dynamic stress patterns were photographed at speeds up to 720,000 frames per second, using flash tubes and filters to obtain monochromatic light. The procedures are described and typical results are given. Author

Author(s):
Flynn, Paul D.
Author Organization(s):
FRANKFORD ARSENAL PHILADELPHIA PA PITMAN-DUNN RESEARCH LABS
Supplementary Note:
Pub. in The Indian and Eastern Engineer, Bombay, India, p83-4 1964 (Copies available only to DDC users).
Annotation:
Reprint: Recent advances in dynamic photoelasticity.
Pagination:
0008

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
A64-30
Project Number(s):
1C014501B33A
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
No COI(s) Identified
Descriptor(s):
HIGH SPEED PHOTOGRAPHY, PHOTOELASTICITY, DYNAMICS, STRESSES, CONFIGURATIONS, PHOTOGRAPHIC ANALYSIS, POLARISCOPES, PHOTOGRAPHIC EQUIPMENT
Report Date:
1964 Jan 01