Accession Number:

AD0652362

Title:

SECOND-ORDER STRAIN ACCUMULATION AT ULTRASONIC FREQUENCY.

Descriptive Note:

Technical rept.,

Corporate Author:

COLUMBIA UNIV NEW YORK INST FOR THE STUDY OF FATIGUE AND RELIABILITY

Personal Author(s):

• Mason,Warren P.
• Ronay,Maria

Report Date:

1967-05-01

Pagination or Media Count:

22.0

Abstract:

Permanent axial extension is produced by reversed cyclic straining in tension-compression at ultrasonic frequency and in torsion at mechanically induced low frequency. It is shown that in both ranges the axial extension is a quadratic function of the cyclic strain amplitude, which is characteristic of second-order effects that exist independently of the frequency of the cyclic strain. Author

Descriptors:

• (*STRAIN(MECHANICS)
• ULTRASONIC RADIATION)
• INTERNAL FRICTION
• TORSION
• METALS
• ALUMINUM

Subject Categories:

• Metallurgy and Metallography
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE