<div class="csl-bib-body">
<div class="csl-entry">Chehrehrazi, S. (2019). <i>Influence of stress ratio on the torsional fatigue behaviour of 17-4PH stainless steel used for biomedical applications</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2019.47746</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2019.47746
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/4511
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dc.description.abstract
Precipitation-hardened chromium-nickel-copper stainless steel 17-4PH has a high strength, toughness and good corrosion resistance. According to these features, the 17-4PH stainless steel has a great application in biomedical advices such as hand tools and surgical staplers. In this study, the fatigue behavior of 17-4PH stainless steel under torsional loading condition in the very high cyclic fatigue regime was studied. To test the specimens in reasonable time, the ultrasonic fatigue testing equipment was used, which applies a sinusoidal load at a frequency of about 20 kHz. The results were compared with torsional tests that were conducted using conventional servohydraulic testing. Furthermore, the frequency effect and also the effect of delta ferrite grains on initiation of cracks at different loading frequencies are discussed. In addition, the area as a geometric parameter is used to determine the effect of small artificial defects on the torsional fatigue limit. Furthermore, the effect of different R-ratios on smooth and defect containing specimens is investigated.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
fatigue
en
dc.subject
martensitic stainless steel
en
dc.subject
defect tolerance
en
dc.subject
load ratio
en
dc.title
Influence of stress ratio on the torsional fatigue behaviour of 17-4PH stainless steel used for biomedical applications
en
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2019.47746
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dc.contributor.affiliation
TU Wien, Österreich
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dc.rights.holder
Seyedmasoud Chehrehrazi
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dc.publisher.place
Wien
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tuw.version
vor
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tuw.thesisinformation
Technische Universität Wien
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dc.contributor.assistant
Schönbauer, Bernd
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tuw.publication.orgunit
E308 - Institut für Werkstoffwissenschaft und Werkstofftechnologie
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dc.type.qualificationlevel
Diploma
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dc.identifier.libraryid
AC15509741
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dc.description.numberOfPages
72
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dc.identifier.urn
urn:nbn:at:at-ubtuw:1-131055
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dc.thesistype
Diplomarbeit
de
dc.thesistype
Diploma Thesis
en
dc.rights.identifier
In Copyright
en
dc.rights.identifier
Urheberrechtsschutz
de
tuw.advisor.staffStatus
staff
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tuw.assistant.staffStatus
external
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item.openaccessfulltext
Open Access
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item.fulltext
with Fulltext
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item.grantfulltext
open
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item.mimetype
application/pdf
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item.openairecristype
http://purl.org/coar/resource_type/c_bdcc
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item.languageiso639-1
en
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item.openairetype
master thesis
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item.cerifentitytype
Publications
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crisitem.author.dept
E317 - Institut für Leichtbau und Struktur-Biomechanik
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crisitem.author.parentorg
E300 - Fakultät für Maschinenwesen und Betriebswissenschaften
