Cracking directions in multiaxial low cycle fatigue at high and room temperatures
Cracking direction in multiaxial low cycle fatigue is an important research subject because crack initiation and propagation behavior is a physical background for developing an estimation method of multiaxial low cycle fatigue lives. However, there are a few open questions on cracking direction in m...
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Gruppo Italiano Frattura
2017-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1857 |
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| _version_ | 1841562852818681856 |
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| author | Masao Sakane Takamoto Itoh |
| author_facet | Masao Sakane Takamoto Itoh |
| author_sort | Masao Sakane |
| collection | DOAJ |
| description | Cracking direction in multiaxial low cycle fatigue is an important research subject because crack initiation and propagation behavior is a physical background for developing an estimation method of multiaxial low cycle fatigue lives. However, there are a few open questions on cracking direction in multiaxial low cycle fatigue because cracking direction in multiaxial low cycle fatigue is complex and changes depending on stress multiaxiality, strain range, notch and material. This paper overviews cracking directions in tension-torsion low cycle fatigue of low alloy steels and nickel base superalloys. Two types of cracking directions in these materials, maximum shear direction and maximum principal direction, are discussed in relation with strain multiaxiality and an existence of notch and precrack. The two cracking directions in torsion low cycle fatigue of SUS 304 stainless steel are also discussed in relation with strain range. Detailed micro crack observations are finally presented to discuss the two cracking directions in torsion low cycle fatigue of a SUS 304 unnotched specimen. |
| format | Article |
| id | doaj-art-72946ef177b94523a1f4f4f9d3f29fa0 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-72946ef177b94523a1f4f4f9d3f29fa02025-01-03T00:39:50ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-06-01114110.3221/IGF-ESIS.41.03Cracking directions in multiaxial low cycle fatigue at high and room temperaturesMasao SakaneTakamoto ItohCracking direction in multiaxial low cycle fatigue is an important research subject because crack initiation and propagation behavior is a physical background for developing an estimation method of multiaxial low cycle fatigue lives. However, there are a few open questions on cracking direction in multiaxial low cycle fatigue because cracking direction in multiaxial low cycle fatigue is complex and changes depending on stress multiaxiality, strain range, notch and material. This paper overviews cracking directions in tension-torsion low cycle fatigue of low alloy steels and nickel base superalloys. Two types of cracking directions in these materials, maximum shear direction and maximum principal direction, are discussed in relation with strain multiaxiality and an existence of notch and precrack. The two cracking directions in torsion low cycle fatigue of SUS 304 stainless steel are also discussed in relation with strain range. Detailed micro crack observations are finally presented to discuss the two cracking directions in torsion low cycle fatigue of a SUS 304 unnotched specimen.https://www.fracturae.com/index.php/fis/article/view/1857Multiaxial fatigueCrack modeNotchFatigue lifeTorsion |
| spellingShingle | Masao Sakane Takamoto Itoh Cracking directions in multiaxial low cycle fatigue at high and room temperatures Fracture and Structural Integrity Multiaxial fatigue Crack mode Notch Fatigue life Torsion |
| title | Cracking directions in multiaxial low cycle fatigue at high and room temperatures |
| title_full | Cracking directions in multiaxial low cycle fatigue at high and room temperatures |
| title_fullStr | Cracking directions in multiaxial low cycle fatigue at high and room temperatures |
| title_full_unstemmed | Cracking directions in multiaxial low cycle fatigue at high and room temperatures |
| title_short | Cracking directions in multiaxial low cycle fatigue at high and room temperatures |
| title_sort | cracking directions in multiaxial low cycle fatigue at high and room temperatures |
| topic | Multiaxial fatigue Crack mode Notch Fatigue life Torsion |
| url | https://www.fracturae.com/index.php/fis/article/view/1857 |
| work_keys_str_mv | AT masaosakane crackingdirectionsinmultiaxiallowcyclefatigueathighandroomtemperatures AT takamotoitoh crackingdirectionsinmultiaxiallowcyclefatigueathighandroomtemperatures |