Key findings:

• Statistically significant differences were found in the fatigue behaviour of various commercially available screw types, which underlines the relevance of a differentiated approach.
• The determined Wöhler lines show an inclination of approximately k = 3 and thus confirm the categorisation of self-drilling wood screws as sharply notched components.
• For practical design, it can be seen that notch case 71 in accordance with DIN EN 1993-1-9 reliably represents the fatigue behaviour and is on the safe side.

With this article and the underlying investigations, IBHolz is making a significant contribution to the knowledge gained with regard to the fatigue behaviour of connections in timber construction.

The essay can be downloaded here: https://doi.org/10.1002/bate.70053