Fatigue strength of SS400 steel under non-proportional loading
This study discusses fatigue properties of low carbon steel, type SS400 steel, under non-proportional loading. Multiaxial fatigue tests under proportional and non-proportional loading conditions with various stress amplitudes were carried out using a hollow cylinder specimen at room temperature. In...
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| Format: | Article |
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Gruppo Italiano Frattura
2016-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1801 |
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| author | T. Morishita T. Takaoka T. Itoh |
| author_facet | T. Morishita T. Takaoka T. Itoh |
| author_sort | T. Morishita |
| collection | DOAJ |
| description | This study discusses fatigue properties of low carbon steel, type SS400 steel, under non-proportional loading. Multiaxial fatigue tests under proportional and non-proportional loading conditions with various stress amplitudes were carried out using a hollow cylinder specimen at room temperature. In the test, three types of stress paths were employed. They are a push-pull, a reversed torsion and a circle loading. The circle loading is a cyclic loading combined the push-pull and the reversed torsion loading in which axial and shear stress waveforms have 90 degrees phase differences. From the obtained test results, poor evaluations of failure life under non-proportional loading are indicated when the life is correlated by the equivalent strain range based on von Mises ??eq and the non-proportional strain range ??NP. A modified strain parameter is presented which can evaluate the failure life in high and low strain levels under non-proportional loading. |
| format | Article |
| id | doaj-art-581c36417a264112bcf76f39c11341de |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2016-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-581c36417a264112bcf76f39c11341de2025-01-03T00:40:22ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932016-10-011038Fatigue strength of SS400 steel under non-proportional loadingT. MorishitaT. TakaokaT. ItohThis study discusses fatigue properties of low carbon steel, type SS400 steel, under non-proportional loading. Multiaxial fatigue tests under proportional and non-proportional loading conditions with various stress amplitudes were carried out using a hollow cylinder specimen at room temperature. In the test, three types of stress paths were employed. They are a push-pull, a reversed torsion and a circle loading. The circle loading is a cyclic loading combined the push-pull and the reversed torsion loading in which axial and shear stress waveforms have 90 degrees phase differences. From the obtained test results, poor evaluations of failure life under non-proportional loading are indicated when the life is correlated by the equivalent strain range based on von Mises ??eq and the non-proportional strain range ??NP. A modified strain parameter is presented which can evaluate the failure life in high and low strain levels under non-proportional loading.https://www.fracturae.com/index.php/fis/article/view/1801FatigueMultiaxial stressNon-proportional loadingLife evaluationCarbon steel |
| spellingShingle | T. Morishita T. Takaoka T. Itoh Fatigue strength of SS400 steel under non-proportional loading Fracture and Structural Integrity Fatigue Multiaxial stress Non-proportional loading Life evaluation Carbon steel |
| title | Fatigue strength of SS400 steel under non-proportional loading |
| title_full | Fatigue strength of SS400 steel under non-proportional loading |
| title_fullStr | Fatigue strength of SS400 steel under non-proportional loading |
| title_full_unstemmed | Fatigue strength of SS400 steel under non-proportional loading |
| title_short | Fatigue strength of SS400 steel under non-proportional loading |
| title_sort | fatigue strength of ss400 steel under non proportional loading |
| topic | Fatigue Multiaxial stress Non-proportional loading Life evaluation Carbon steel |
| url | https://www.fracturae.com/index.php/fis/article/view/1801 |
| work_keys_str_mv | AT tmorishita fatiguestrengthofss400steelundernonproportionalloading AT ttakaoka fatiguestrengthofss400steelundernonproportionalloading AT titoh fatiguestrengthofss400steelundernonproportionalloading |