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第41号 >

Please use this identifier to cite or link to this item: http://hdl.handle.net/11178/4412

Title: SUJ2鋼の超長疲労寿命挙動(機械工学科,工学部創設40周年記念号)
Other Titles: Very Long Fatigue Life Behavior of High Strength Steel(DEPARTMENT OF MECHANICAL ENGINEERING)
Authors: 緒方, 良
吉房, 篤
中橋, 克彰
田中, 哲志
OGATA, Ryou
YOSHIFUSA, Atsushi
NAKAHASHI, Katsuaki
TANAKA, Satoshi
オガタ, リョウ
ヨシフサ, アツシ
ナカハシ, カツアキ
タナカ, サトシ
九州産業大学大学院工学研究科機械工学専攻 / 九州産業大学機械工学科 / 九州産業大学機械工学科 / 九州産業大学機械工学科
Keywords: Fatigue
High strength steel
Fish-eye
Very long fatigue life
SUJ2
Issue Date: 20-Dec-2004
Publisher: 九州産業大学工学部
Abstract: In order to investigate the very long fatigue life characteristics, the rotating bending fatigue tests were carried out on the high strength steel SUJ2 material. The main results summarized in this study are as follows: (1) The test pieces have shown the S-N curve of the typical two-stage folding shape. (2) It is found out that the origin of fracture is the slip or grinding flaw type on the surface in the test pieces when they fracture in the range of the low cycles. It is also found out that the origin of fracture is the inclusion (Fish-eye type) inside of the test pieces when they fracture in the range of the high cycles. (3) Because the test pieces fracture even after they have exceeded the number of cycles of 107, establishment of the design method for very long life is important.
URI: http://hdl.handle.net/11178/4412
Appears in Collections:第41号

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