|
|
 |
 |
Collection >
Author >
NASA Center >
Publication Year >
>
Subject >
>
Availability Options >
>
Item/Media Type >
>
Item/Media Type >
|
|
| Note: Start a new navigation search by selecting a link above |
|
|
|
 |
|
|
|
|
|
| |
|
|
|
|
| |
|
| Title: |
Effects of environmental variables on the crack initiation stages of corrosion fatigue of high strength aluminum alloys
|
| Author(s): |
Poteat, L. E.
|
| Abstract: |
Fatigue initiation in six aluminum alloys used in the aircraft industry was investigated. Cyclic loading superimposed on a constant stress was alternated with atmospheric corrosion. Tests made at different stress levels revealed that a residual stress as low as 39 of the yield strength caused stress corrosion cracking in some of the alloys. An atmospheric corrosion rate meter developed to measure the corrosivity of the atmosphere is described. An easily duplicated hole in the square test specimen with a self-induced residual stress was developed.
|
| NASA Center: |
NASA (non Center Specific)
|
| Publication Date: |
Dec 18, 1981
|
| Document Source: |
CASI |
| No Digital Version Available: |
|
| Document ID: |
19820008342
|
| Accession ID: |
82N16216
|
| Publication Information: |
Number of Pages = 26 |
| Report Number: |
NASA-CR-165115
|
| Contract-Grant-Task Number: |
NSG-1283 |
| Price Code: |
A03 |
| Keywords: |
ALUMINUM ALLOYS; ATMOSPHERIC EFFECTS; CRACK INITIATION; STRESS CORROSION CRACKING; CORROSION TESTS; MEASURING INSTRUMENTS; RESIDUAL STRESS; TEST EQUIPMENT; YIELD STRENGTH;
|
| Accessibility: |
Unclassified; No Copyright; Unlimited; Publicly available; Final Report |
| Updated/Added to NTRS: |
2004-11-03 |
|
|
|
