강 봉(SM45C) 맞대기 용접부의 피로수명 평가Estimation of Fatigue Life in Butt-Welded Zone of SM45C Steel Rodd
- Other Titles
- Estimation of Fatigue Life in Butt-Welded Zone of SM45C Steel Rodd
- Authors
- 오병덕; 이용복
- Issue Date
- 2008
- Publisher
- 대한용접접합학회
- Keywords
- SM45C steel rod; Machine components; Fatigue life; Fatigue strength; Fatigue limit; Base metal
zone; Compressive residual stress; Drawing process; Alternating stress
- Citation
- 대한용접접합학회지, v.26, no.3, pp.45 - 50
- Journal Title
- 대한용접접합학회지
- Volume
- 26
- Number
- 3
- Start Page
- 45
- End Page
- 50
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/23190
- ISSN
- 2466-2232
- Abstract
- SM45C steel rods being used generally for power transmission shafts and machine components was
selected and welded by Butt-GMAW(Gas Metal Arc Welding) method. An estimation of fatigue life was
studied by constructing S-N curve. Fatigue strength of base metal zone showed higher values than one of
weld zone in low cycles between 104 and 106cycles. However, significant decrease in fatigue strength of
base metal was found around 106cycles, which were almost same as one of heat affected zone. This
decrease was attributed that initial residual stress of the steel rods distributed by drawing process was
diminished by continually applied load, and resulted in softening of base metal. The fatigue limit of the
weld zone was highest in the boundary between deposited metal zone and heat affected zone, and followed
by in the order of deposited metal zone, base metal zone, and heat affected zone. Based on these results,
it is revealed that the stress for safety design of machine components using SM45C butt-welded steel rods
must be selected within the region of the lowest fatigue limit of heat affected zone.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Mechanical and System Design Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.