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the Methodology of Tribo-Fatigue
Interests of
tribo-fatigue
So far Byelorussian standard
СТБ 994—95 [1] and Interstate (for CIS states) standard GOST
30638–99 “Tribo-Fatigue. Terms and Definitions” [3] have been officially
approved and put into effect. Fig. 15 outlines the “range of interests of
tribo-fatigue” determined by these standards. Table 3 shows typical examples
of active systems and types of wear-fatigue damage (their definitions).
Figure
15 – Basic types of wear-fatigue damage (GOST
30638–99)
GOST 30638 has been translated (Fig. 16)
into Chinese and its approval in the Chinese People's Republic is pending.
Figure 16 – Title-page of
the Interstate Standard GOST 30638–99 in the Chinese language
Table 3
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Typical active system
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Complex damage and fracture
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Definition
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Crank-pin
—
connecting rod end with sliding bearing
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Mechano-sliding fatigue
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Wear-fatigue
damage due to the effect of kinetic interaction between the phenomena of
mechanical fatigue and sliding friction
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Wheel — rail
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Mechano-rolling fatigue
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Wear-fatigue
damage due to the effect of kinetic interaction between the phenomena of
mechanical fatigue and rolling friction (rolling friction with slippage)
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Spline shaft —
bushing
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Fretting fatigue
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Wear-fatigue
damage due to the effect of kinetic interaction between the phenomena of
mechanical fatigue and fretting
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(Screw)
propeller shaft — sea water
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Mechano-corrosion
fatigue
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Fatigue
of the material under the simultaneous effect of alternating stresses and
corrosive environment
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Turbine blades —
fluid or gas stream carrying solid particles
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Mechano-erosion fatigue
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Wear-fatigue
damage due to the effect of kinetic interaction between the phenomena of
mechanical fatigue and erosion
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Thus, tribo-fatigue is a new,
dynamically evolving part of mechanics. The integrity of studies, implying that
an entity is viewed as multiple, is its basic methodological principle.
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