Literature synthesis the relative factors on flight fatigue are discussed, based on which, the principles for duty limitations and rest requirements are put forward.
According to the numerical simulation of heavy-duty diesel engine to raise power, two methods to assess the strength of cylinder head bolt, static calculation and fatigue stress check, are introduced.
Fatigue properties of three case hardening steels for heavy duty gears after carburization were investigated by means of rotating bending fatigue tests.