Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue
This paper studies multiaxial low cycle fatigue crack mode and failure life of Ti-6Al-4V. Stress controlled fatigue tests were carried out using a hollow cylinder specimen under multiaxial loadings of λ=0, 0.4, 0.5 and 1 of which stress ratio R=0 at room temperature. λ is a principal stress ratio...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2015-10-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_54.pdf |
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| _version_ | 1846092578905128960 |
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| author | Takamoto Itoh Masao Sakane Takahiro Morishita Hiroshi Nakamura Masahiro Takanashi |
| author_facet | Takamoto Itoh Masao Sakane Takahiro Morishita Hiroshi Nakamura Masahiro Takanashi |
| author_sort | Takamoto Itoh |
| collection | DOAJ |
| description | This paper studies multiaxial low cycle fatigue crack mode and failure life of Ti-6Al-4V. Stress
controlled fatigue tests were carried out using a hollow cylinder specimen under multiaxial loadings of λ=0, 0.4,
0.5 and 1 of which stress ratio R=0 at room temperature. λ is a principal stress ratio and is defined as λ=II/I,
where I and II are principal stresses of which absolute values take the largest and middle ones, respectively.
Here, the test at λ=0 is a uniaxial loading test and that at λ=1 an equi-biaxial loading test. A testing machine
employed is a newly developed multiaxial fatigue testing machine which can apply push-pull and reversed
torsion loadings with inner pressure onto the hollow cylinder specimen. Based on the obtained results, this
study discusses evaluation of the biaxial low cycle fatigue life and crack mode. Failure life is reduced with
increasing λ induced by cyclic ratcheting. The crack mode is affected by the surface condition of cut-machining
and the failure life depends on the crack mode in the multiaxial loading largely. |
| format | Article |
| id | doaj-art-6d9d53687a0c42b79bb74f80fea4cc0a |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2015-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-6d9d53687a0c42b79bb74f80fea4cc0a2025-01-02T20:55:39ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932015-10-0193448749710.3221/IGF-ESIS.34.54Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigueTakamoto Itoh0Masao Sakane1Takahiro Morishita2Hiroshi Nakamura3Masahiro Takanashi4Ritsumeikan University, JapanRitsumeikan University, JapanRitsumeikan University, JapanEngine Technology Department,JapanIHI Corporation, JapanThis paper studies multiaxial low cycle fatigue crack mode and failure life of Ti-6Al-4V. Stress controlled fatigue tests were carried out using a hollow cylinder specimen under multiaxial loadings of λ=0, 0.4, 0.5 and 1 of which stress ratio R=0 at room temperature. λ is a principal stress ratio and is defined as λ=II/I, where I and II are principal stresses of which absolute values take the largest and middle ones, respectively. Here, the test at λ=0 is a uniaxial loading test and that at λ=1 an equi-biaxial loading test. A testing machine employed is a newly developed multiaxial fatigue testing machine which can apply push-pull and reversed torsion loadings with inner pressure onto the hollow cylinder specimen. Based on the obtained results, this study discusses evaluation of the biaxial low cycle fatigue life and crack mode. Failure life is reduced with increasing λ induced by cyclic ratcheting. The crack mode is affected by the surface condition of cut-machining and the failure life depends on the crack mode in the multiaxial loading largely.http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_54.pdfTi-6Al-4VLow cycle fatigueMultiaxial loadingCrack modeHollow cylinder specimenInner pressure |
| spellingShingle | Takamoto Itoh Masao Sakane Takahiro Morishita Hiroshi Nakamura Masahiro Takanashi Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue Fracture and Structural Integrity Ti-6Al-4V Low cycle fatigue Multiaxial loading Crack mode Hollow cylinder specimen Inner pressure |
| title | Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue |
| title_full | Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue |
| title_fullStr | Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue |
| title_full_unstemmed | Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue |
| title_short | Crack mode and life of Ti-6Al-4V under multiaxial low cycle fatigue |
| title_sort | crack mode and life of ti 6al 4v under multiaxial low cycle fatigue |
| topic | Ti-6Al-4V Low cycle fatigue Multiaxial loading Crack mode Hollow cylinder specimen Inner pressure |
| url | http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_54.pdf |
| work_keys_str_mv | AT takamotoitoh crackmodeandlifeofti6al4vundermultiaxiallowcyclefatigue AT masaosakane crackmodeandlifeofti6al4vundermultiaxiallowcyclefatigue AT takahiromorishita crackmodeandlifeofti6al4vundermultiaxiallowcyclefatigue AT hiroshinakamura crackmodeandlifeofti6al4vundermultiaxiallowcyclefatigue AT masahirotakanashi crackmodeandlifeofti6al4vundermultiaxiallowcyclefatigue |