TY - RPRT
T1 - Fatigue Tests on Welded Joints Improved by Grinding
AU - Agerskov, Henning
AU - Bjørnbak-Hansen, Jørgen
AU - Olesen, John Forbes
PY - 2003
Y1 - 2003
N2 - The present project is a part of an investigation on the fatigue life of the welded structure of large two-stroke diesel engines. Of special interest has been a study of the improvement in fatigue life, due to grinding of the weld toes.
The test series carried through showed a significant increase in fatigue life due to the grinding, ranging from a factor of approx. 2.8 to infinity, depending on the load level.
With the limited number of tests carried out, S-N lines have not been determined. However, the results obtained indicate a change in slope of the S-N line from approx. 3.0 for the test series without grinding to approx. 6.4 for the test series with grinding.
In one of the test series (No. 7), the crack initiation in most tests moved from the weld toe to the non-ground surface between the ground areas at the weld toes, due to the grinding.
AB - The present project is a part of an investigation on the fatigue life of the welded structure of large two-stroke diesel engines. Of special interest has been a study of the improvement in fatigue life, due to grinding of the weld toes.
The test series carried through showed a significant increase in fatigue life due to the grinding, ranging from a factor of approx. 2.8 to infinity, depending on the load level.
With the limited number of tests carried out, S-N lines have not been determined. However, the results obtained indicate a change in slope of the S-N line from approx. 3.0 for the test series without grinding to approx. 6.4 for the test series with grinding.
In one of the test series (No. 7), the crack initiation in most tests moved from the weld toe to the non-ground surface between the ground areas at the weld toes, due to the grinding.
M3 - Report
T3 - BYG-DTU SR
BT - Fatigue Tests on Welded Joints Improved by Grinding
PB - DTU Byg, Danmarks Tekniske Universitet
CY - Lyngby,Denmark
ER -