Forctimekäyrä
Forctimekäyrä is a concept related to the study of material fatigue, specifically how the time to failure of a material is influenced by the applied stress. In essence, it describes the relationship between stress and the number of cycles a material can withstand before it fractures. Higher stress levels generally lead to shorter fatigue lives, meaning the material will fail after fewer stress cycles. Conversely, lower stress levels allow the material to endure a greater number of cycles before succumbing to fatigue.
The forctimekäyrä is often presented as a graph where the y-axis represents the stress amplitude or maximum