The increase in the susceptibility of a specimen to fracture caused by a notch.
〔工程〕切口效应，缺口效应
Example sentencesExamples
Molybdenum is highly notch-sensitive, craters and notch effects such as undercutting must be avoided.
Fatigue performance is reduced under the latter condition by the notch effect.
Even though the steel in the two structural conditions had the same tensile strength, the pearlitic structure resulted in a significantly lower fatigue limit due to the higher notch effects of the carbide lamellae in pearlite.