Abstract
The fatigue properties of spot-welded lap joints under a constant mean load made from 1.2 and 3 mm sheet thickness stainless steel with one, two or three-spot welds in series are reported. A log plot of cyclic load range versus fatigue life shows that for given sheet thickness and fixed load range, fatigue life increases with the number of spot welds. Oil has a beneficial effect by increasing the fatigue life of the welded joints. A fracture mechanics analysis is carried out on the data by treating the spot weld as a crack. A log plot of initial stress intensity factor range versus fatigue life is a straight line which is independent of the number of spot welds. However, increasing the sheet thickness shifts the straight line upwards in the log plot, thus indicating a longer fatigue life for the same applied initial stress intensity factor range.
| Original language | English |
|---|---|
| Pages (from-to) | 55-57 |
| Number of pages | 3 |
| Journal | International Journal of Fatigue |
| Volume | 6 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1984 |
| Externally published | Yes |
Keywords
- fatigue testing
- fracture mechanics
- lapped joints
- spot welding
ASJC Scopus subject areas
- Modelling and Simulation
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering