2010 Fiscal Year Final Research Report
A guarantee of strength and life of carburized gears based on the damage variables.
| Project/Area Number |
20360071
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tohoku University |
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Principal Investigator |
TOMOYA Masuyama Tohoku University, 機械工学科, 准教授 (80282094)
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| Co-Investigator(Kenkyū-buntansha) |
INOUE Katsumi 鶴岡工業高等専門学校 (90005554)
YAMANAKA Masashi 鶴岡工業高等専門学校 (20292229)
NARITA Yukihito 鶴岡工業高等専門学校 (90431519)
EOM Sang In 鶴岡工業高等専門学校 (20551576)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 機械要素 / 歯車 / 信頼性設計 / 損傷力学 / ひずみ |
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| Research Abstract |
Considering probability of failure and estimating fatigue life is important for design of gear and transmission. In this research, the damage variable and effective stress are calculated by change of strain by using tensile test specimens of JIS SCM415 low alloy steel. Variation of elastic strain in fatigue process is measured by the image processing method and changes of elastic moduli were computed. For higher accuracy of measurement, we developed the surface treatment method and calculation program. Furthermore, we developed a simulation method based on the damage mechanics to predict the area of crack initiation and fatigue life.
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