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High Temperature Fatigue of Mild Steel under Varying Temperatures (1st Report)

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 24 Issue 2 Page 7-16
published_at 1973
KJ00000156026.pdf
[fulltext] 891 KB
Title
温度変動下における軟鋼の高温疲労(第1報)
High Temperature Fatigue of Mild Steel under Varying Temperatures (1st Report)
Creators Shimizu Shigetoshi
Creators Mochizuki Takio
Creators Fujimitsu Tatsuro
Creators Oda Yoshinori
Source Identifiers
The object of this investigation is to estimate the high temperature fatigue strength of mild steel under varying temperature by assuming the equivalent temperature Te as [numerical formula] where, N^^- is the number of cycle and α(N, T) is a weight function, depending upon the temperature and cycles . We made rotary-bending fatigue tests of two kinds of mild steel, SM41A as recieved and S12C annealed at 910℃ under various temperature conditions. The S-N curves obtained from the experiments under three simple models of cyclic temperature changes coinsided very well with the curves which we made from the stress versus temperature curves for each endurance strength of the material at the equivalent temperature Te, assuming α=1. We could also substantiate this result by refering to the microstructures of both specimens which were exposed to varying temperature and equivalent temperature under the same bending stress.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1973
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部