NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A comparison of constant-load and constant-deflection stress-corrosion tests on precracked DCB specimensA comparison is made between measurements of stress-corrosion crack propagation made by a constant-load procedure and by a constant-deflection procedure. Precracked double cantilever beam specimens from 7075 aluminum alloy plate were used. The specimens were oriented in such a way that cracking would begin in the short-transverse plane and would propagate in the rolling direction. The specimens were subjected to a buffered salt-chromate solution and a 3.6% synthetic sea salt solution. The measurements were made optically with a binocular microscope. Stress intensities and crack lengths were calculated and crack velocities were obtained. Velocity was plotted against the average calculated stress intensity. Good agreement between the two methods was found for the salt-chromate solution, although some descrepancies were noted for the artificial sea salt solution.
Document ID
19780057278
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Dorward, R. C.
(Kaiser Aluminum and Chemical Corp. Pleasanton, CA, United States)
Hasse, K. R.
(Kaiser Aluminum Center for Technology Pleasanton, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
February 1, 1978
Publication Information
Publication: International Journal of Fracture
Volume: 14
Subject Category
Structural Mechanics
Accession Number
78A41187
Funding Number(s)
CONTRACT_GRANT: NAS8-30890
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available