Note
College of Engineering and Computer Science
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
1988
Description
Fatigue response of selected high strength steels in seawater was investigated
under conditions relevant to tension leg platform tendon applications. This involved both
freely corroding and cathodically protected, displacement controlled experiments upon
constant taper, bending specimens which were either notched or welded, ground and post
weld heat treated. High stress range freely corroding results indicated enhanced life
compared to structural steel, whereas at low stress range the opposite was true.
Corrections made to the high strength steel and structural steel data to correspond to
similar test conditions revealed no benefit of enhanced material strength on corrosion
fatigue life. Fatigue life for all cathodically protected specimens exceeded that for the
freely corroding ones, and with one exception testing was terminated prior to failure.
The single cathodically protected specimen failure involved a stress range approximately
one-third the value for other specimens which were run-outs. This suggests that an
environmental cracking process may operate precipitously at relatively low stress
amplitudes (alternately, high R values). Fatigue life for freely corroding notched
specimens was less than for grounded PWHT specimens, the difference increasing with
decreasing amplitude.
under conditions relevant to tension leg platform tendon applications. This involved both
freely corroding and cathodically protected, displacement controlled experiments upon
constant taper, bending specimens which were either notched or welded, ground and post
weld heat treated. High stress range freely corroding results indicated enhanced life
compared to structural steel, whereas at low stress range the opposite was true.
Corrections made to the high strength steel and structural steel data to correspond to
similar test conditions revealed no benefit of enhanced material strength on corrosion
fatigue life. Fatigue life for all cathodically protected specimens exceeded that for the
freely corroding ones, and with one exception testing was terminated prior to failure.
The single cathodically protected specimen failure involved a stress range approximately
one-third the value for other specimens which were run-outs. This suggests that an
environmental cracking process may operate precipitously at relatively low stress
amplitudes (alternately, high R values). Fatigue life for freely corroding notched
specimens was less than for grounded PWHT specimens, the difference increasing with
decreasing amplitude.
Language
Type
Form
Extent
64 p.
Subject (Topical)
Identifier
14463
Additional Information
College of Engineering and Computer Science
Thesis (M.S.)--Florida Atlantic University, 1988.
FAU Electronic Theses and Dissertations Collection
Date Backup
1988
Date Text
1988
Date Issued (EDTF)
1988
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing1508", creator="staff:fcllz", creation_date="2007-07-19 02:39:45", modified_by="staff:fcllz", modification_date="2011-01-06 13:09:10"
IID
FADT14463
Issuance
monographic
Organizations
Attributed name: Florida Atlantic University
Attributed name: College of Engineering and Computer Science
Attributed name: Department of Ocean and Mechanical Engineering
Person Preferred Name
Sablok, Anil Kumar.
Graduate College
Physical Description
64 p.
application/pdf
Title Plain
Fatigue of high strength steels in sea water
Use and Reproduction
Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
http://rightsstatements.org/vocab/InC/1.0/
Origin Information
1988
monographic
Boca Raton, Fla.
Florida Atlantic University
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, Fla.
Sub Location
Digital Library
Title
Fatigue of high strength steels in sea water
Other Title Info
Fatigue of high strength steels in sea water