Tester and method for testing test environment controllable multi-directional fine motion fatigue

Abstract

The invention discloses a tester and a method for testing test environment controllable multi-directional fine motion fatigue. The tester comprises a vertical fine motion mechanism and a transverse fine motion mechanism, wherein the vertical fine motion mechanism consists of an electromagnetic excitation actuator, a force transducer I, an upper clamp for clamping a spherical upper test piece and the like; the transverse fine motion mechanism consists of a lower clamp for clamping a planar lower test piece, a force transducer II, a piezoelectric ceramic actuator, a longitudinal and transverse two-dimensional moving platform and the like; the vertical fine motion mechanism and the transverse fine motion mechanism are covered by a lower atmosphere cover and an upper atmosphere cover to form an atmosphere control space; and the periphery of the lower clamp is provided with a liquid medium groove higher than the planar test piece. Through the tester, a tightly matched friction pair can carry out multi-directional fine motion in a specific atmosphere and / or a liquid environment controlled artificially, thus the multi-directional fine motion frictional wear performance of a material under the specific environment condition is tested really and accurately, an accurate and reliable proof is provided for related design, use and maintenance of machinery and bioengineering, the properties of equipment and apparatuses are improved, and the service lives of the equipment and the apparatuses are prolonged.

Description

technical field

[0001] The invention relates to a multi-directional fretting fatigue testing machine with controllable test environment and a multi-directional fretting fatigue test method with controllable test environment. Background technique

[0002] Fretting refers to the relative motion of extremely small amplitude (micron level) between two contact surfaces (such as tight fitting surfaces) under the action of alternating loads such as mechanical vibration, fatigue load, electromagnetic vibration or thermal cycle. The contacting surfaces are usually nominally stationary, i.e. fretting occurs in mechanical parts that are "tightly" fitted. Fretting tribology is a branch of disciplines that studies the mechanism of fretting, damage, testing, monitoring, and prevention. Electrical Engineering etc. Fretting is a friction method with a small relative motion range, and the material damage caused by it is usually manifested in two forms, namely: (1) Wear caused by fretting: ...

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