Accession Number:

AD0258689

Title:

SONIC FATIGUE DAMPING SYSTEM DEVELOPMENT

Descriptive Note:

Corporate Author:

DOUGLAS AIRCRAFT CO INC EL SEGUNDO CALIF

Personal Author(s):

• SMILLIE,D.G.

Report Date:

1960-07-01

Pagination or Media Count:

1.0

Abstract:

A litrature search was made to survey commercially available damping and adhesive materials and to determine the physical properties of those materials which reduce resonant-stres . Damping ratis of 108 uncoated strip specimens have been meaured and recorded. A load-stress curve has been plotted for 30 uncoatedl-ner adhesion test specimens. Thirty viscoelastic materials have been acquired. Coupons of these mials have been prepared for peel strength and environmental tests. Investigation of the high-temperature strain gauge techniques required for the program has been initiated. Author

Descriptors:

• *AIRFRAMES
• *CANTILEVER BEAMS
• *DAMPING
• *ELASTOMERS
• *VIBRATION
• *VIBRATION ISOLATORS
• ADHESION
• AIRCRAFT PANELS
• ELASTIC PROPERTIES
• JET FLOW
• ACOUSTIC WAVES
• POLYMERS
• SOUND
• TEMPERATURE
• TEST FACILITIES
• TEST METHODS
• VISCOSITY

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE