Wöhler curve
The Wöhler line shows the relationship between the sustainable stress amplitude and the number of cycles to failure. It helps in fatigue design of components.
Physical-Chemical Mechanism of Action
The Wöhler line is a graph that shows the relationship between the allowable stress amplitude and the number of cycles to failure. It takes into account how often a material is loaded and unloaded before it breaks.
Metallurgical Relevance & Welding Risks
When welding, stresses can occur that affect the material. If you handle it wrong, you can overstress the material and push it to the limits of its Wöhler line. This increases the risk of cracks or fractures.
Workshop Practice & Action Guidelines
To make sure your weld stays within the Wöhler line, you need to control the stress and the number of cycles. Use suitable welding processes and materials to minimize the risk of overstress.