Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Fatigue life analysis based on the groove angle reduction in the butt welding of excavator booms

Authors
Han, ChangwanDoh, JaehyeokKim, Sanghoon
Issue Date
Jan-2024
Publisher
SAGE PUBLICATIONS LTD
Keywords
Fatigue life analysis; groove angle; effective notch stress method; stress concentration factor
Citation
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
Indexed
SCIE
SCOPUS
Journal Title
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/69434
DOI
10.1177/09544062231221875
ISSN
0954-4062
2041-2983
Abstract
This study analyzes the effect of changes in groove angle on the fatigue strength of the V-groove butt weld joint made of SM490A steel used in excavators. Butt-type specimens with different groove angles of 40 degrees and 30 degrees were manufactured by CO2 welding at a speed of 300 mm/min on a 13.5 mm thick steel plate. Four-point bending fatigue tests were conducted at room temperature with a frequency of 5 Hz and stress ratio of R = 0.1, and fatigue limits were set to 2 x 106 cycles. The high-cycle fatigue life of VG40 was approximately 7% higher than that of VG30. The stress concentration coefficient calculated using the effective notch stress method was 1.62 for the VG40, and 1.78 for the VG30, with an approximate difference of 9%. This decrease in fatigue life was caused by stress concentration due to the notch effect at the weld root, which was attributed to the adjacent backplate. Although the fatigue life decreased slightly owing to the improvement angle of the welded part, no difference was observed in microstructure and hardness. Therefore, it was confirmed that a sound weld was formed. The results of this study can be used as important basic data for determining the V-groove angle.
Files in This Item
There are no files associated with this item.
Appears in
Collections
융합기술공과대학 > 기계소재융합공학부 > Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Doh, Jae Hyeok photo

Doh, Jae Hyeok
우주항공대학 (항공우주공학부)
Read more

Altmetrics

Total Views & Downloads

BROWSE