Note
College of Engineering and Computer Science
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
1977
Description
High cycle fatigue tests were conducted using symmetrical
center cracked plate specimens in air, sea water and constant
potentials of -1.0V and -1.3V(SCE) at 20 Hz. (1200 cycles per
minute) to determine what effect these environments had on
crack growth rates, delta a/delta n (inches per cycle), of 5086-H34
aluminum when plotted against stress intensity range, delta K (Ksi root of in). Crack growth rates of 10^-8 inches per cycle
were obtained which indicated that apparent threshold stress
intensities, delta K th, exist which are the same for air, sea
water and a constant potential of -1.0V(SCE); however, under
a constant potential of -1.3V(SCE) the threshold shifts to a
significantly higher value. It was also observed that the
different enviroments had a pronounced effect on crack
growth rate only at low stress intensities. Several mechanisms
are considered to explain this behavior.
center cracked plate specimens in air, sea water and constant
potentials of -1.0V and -1.3V(SCE) at 20 Hz. (1200 cycles per
minute) to determine what effect these environments had on
crack growth rates, delta a/delta n (inches per cycle), of 5086-H34
aluminum when plotted against stress intensity range, delta K (Ksi root of in). Crack growth rates of 10^-8 inches per cycle
were obtained which indicated that apparent threshold stress
intensities, delta K th, exist which are the same for air, sea
water and a constant potential of -1.0V(SCE); however, under
a constant potential of -1.3V(SCE) the threshold shifts to a
significantly higher value. It was also observed that the
different enviroments had a pronounced effect on crack
growth rate only at low stress intensities. Several mechanisms
are considered to explain this behavior.
Language
Type
Form
Extent
38 p.
Subject (Topical)
Identifier
13859
Additional Information
College of Engineering and Computer Science
Thesis (M.S.E.)--Florida Atlantic University, 1977.
FAU Electronic Theses and Dissertations Collection
Date Backup
1977
Date Text
1977
Date Issued (EDTF)
1977
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing1508", creator="staff:fcllz", creation_date="2007-07-19 01:44:10", modified_by="staff:fcllz", modification_date="2011-01-06 13:09:03"
IID
FADT13859
Issuance
monographic
Organizations
Attributed name: Florida Atlantic University
Person Preferred Name
FLODDER, STEVEN PAUL.
Graduate College
Physical Description
38 p.
application/pdf
Title Plain
EFFECTS OF NATURAL SEAWATER AND CATHODIC POLARIZATION OF HIGH CYCLE FATIGUE OF 5086-H34 ALUMINUM
Use and Reproduction
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Origin Information
1977
monographic
Boca Raton, Fla.
Florida Atlantic University
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, Fla.
Sub Location
Digital Library
Title
EFFECTS OF NATURAL SEAWATER AND CATHODIC POLARIZATION OF HIGH CYCLE FATIGUE OF 5086-H34 ALUMINUM
Other Title Info
EFFECTS OF NATURAL SEAWATER AND CATHODIC POLARIZATION OF HIGH CYCLE FATIGUE OF 5086-H34 ALUMINUM