The influence of the hollow and solid shaft cross sectionof SM 30 C steel on corrosion fatigue strength

SM 30 C강의 중공 중실축 단면변화 부식피로강도에 미치는 영향

  • 신규동 (부산전문대학 기계설계과) ;
  • 장백선 (부산전문대학 기계설계과) ;
  • 김웅집 (동아공고 기계과)
  • Published : 1997.05.01

Abstract

The corrosion fatigue test was conducted in air to investigate the corrosion fatigue strength of SM 30 C steel by which was corroded in the under sea and surface in the conditions of 3.0% NaCl salt solution. The fatigue tests were carried out on a rotary bending testing machine of cantilever type. The corrosion effect of the sea surface conditionwas served more than that of the under sea condition which was due ti the periodic contact of air thus accelerate the corrosion. The difference of the fatgue strength between sea surface and under sea conditions decreased with increase of stree level and corroded period. Inthe case of the solid shaft and thickness 2mm of hollow shaft, the difference of corrosion fatigue strength decreased as stress level and corrosion periodic increasing. Onthe contrary in the case of thickness 1mm of hollow sgaft, the difference of it increased as stress level, corrosionn periooodic increasing and also the condition of corrosion chaanged. The main factors affecting the degradation of fatigue strength due to corrosion were the reduction of sectional area and the increase of surface roughness. The interference phenomenon increase with stress level got higher.

Keywords

Corrosion Period;Corrosion Condition;Surface Roughness;Corrosion Fatigue Strength;Initial Fatigue Crack;Interference Phenomenon of the Crack

References

  1. JSME Trans(A) v.55 no.511 Corrosion Fatigue Process of Annealed 0.50% Carbon Steel Under Rotating Bending Noguchi, H;Nisitani, H;Ogawa, T
  2. JSME Trans(A) v.52 no.474 The Influence of Loading Frequency on Near Threshold Fatigue Crack Growth Ogawa, T;Tokaji, K;Ochi, S
  3. Journal of the Iron and Steel Institute of Japan v.73 no.2 Fatigue Strength of a High Strength Steel in Various Sea Water Environments Maruyama, N;Sumita, M;Horibe, S
  4. JSME, Trans(A) v.58 no.547 Yielding on Mild Steel Bean of Hollow Circular Cross Section with a Radial Hole Tamura,k;sato, Y
  5. JSME Trans(A) v.91 no.841 Corrosion Fatigue Science and Engineering Wei, R. P.;Ebara, R
  6. JSME Trans(A) v.57 no.540 Effects of Fluid Flow Rate and Stress Amplitude on the initiation and Growth Behavior of Corrosion Pits on an Annealed Carbon Steel Ishihara, S;Shiozawa, K;Miyao, K;Inoue, M
  7. 서울대학교, 공대연구보고 v.15 no.2 人工海水中의 鋼의 疲勞强度에 관한 硏究 廉永夏;李長茂;辛太明
  8. JSME Trans(A) v.51 no.461 Corrosion Fatigue Property and Frequency Effect of Low Alloy Steels in Salt Water under Rotating Bending Nishijima, S;Abe, T;Masuda, C;Hirakawa, H
  9. JSMS v.36 no.411 Influence of Notch Sensitivity Fatigue Strength of Steel Sheets Corroded with Salt-Water Ogawa, K;Saruki K;Asano, T;Furuta, T
  10. 韓國海洋工學會誌 v.5 no.2 複合組織鋼의 薇視組織變化가 疲勞破壞傳播에 미치는 影響 吳世旭;金雄執
  11. JSME Trans(A) v.50 no.453 On orrosion Fatigue Mechanisms for S45C and SCM43 Steels in Rotating Bending Masuda, C;Nishijima, S;Abe, T;Sumiyoshi, H