Accession Number:

AD0742793

Title:

Double-Pulsed Holographic Interferometry,

Descriptive Note:

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s):

• Shajenko,Peter

Report Date:

1972-03-30

Pagination or Media Count:

46.0

Abstract:

Performance capabilities of an improved ruby laser with Q-switched double-pulsed output as applied to holographic interferometry were investigated. The basic criteria leading to mode selection and the mode selection technique are described. A ruby laser with a pulse duration in the order of 20 nanoseconds and coherence length of one meter was applied to vibration and shock studies of a number of mechanical structures including thin and thick plates, a loudspeaker, a transducer housing, and a long cylindrical rod. Author

Descriptors:

• (*NONDESTRUCTIVE TESTING
• STEREOPHOTOGRAPHY)
• (*VIBRATION
• TEST METHODS)
• SHOCK WAVES
• LASERS
• INTERFEROMETERS
• PHOTOGRAPHY
• LOUDSPEAKERS
• TRANSDUCERS
• RODS
• METAL PLATES

Subject Categories:

• Holography
• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE