Aeroengine Safety - 12:126:1263:12631<a style="color:#000" href="https://www.tugraz.at/institute/ittm">Institute of Thermal Turbomachinery and Machine Dynamics</a></br><a href="https://www.tugraz.at">Graz University of Technology</a>
https://aeroenginesafety.tugraz.at/
2026-05-03T11:46:24+00:00Aeroengine Safety
https://aeroenginesafety.tugraz.at/
https://aeroenginesafety.tugraz.at/lib/exe/fetch.php?media=wiki:logo.pngtext/html2020-08-18T18:34:38+00:00Anonymous (anonymous@undisclosed.example.com)12.6.3.1 Vibration Excitement and Vibration Stress in the HCF Range
https://aeroenginesafety.tugraz.at/doku.php?id=12:126:1263:12631:12631&rev=1597775678&do=diff
12.6.3.1 Vibration Excitement and Vibration Stress in the HCF Range
<a id="vibration-excitement-in-hcf-range"></a>
[ Vibration excitement in HCF range ]
Dynamic stress in the HCF range is stress that causes dynamic fatigue cracks after roughly 105 load cycles (). At this dynamic load level, crack initiation occurs without noticeable plastic deformations.<a id="ways-exciting-vibrations-at-blading"></a><a id="flow-disturbances-exciting-vibrations"></a><a id="excitement-mechanisms-of-flutter"></a…