摘要
Exoelectron is low energy electrons delayed emission from a metallic member surface.The fatigue damage of the metallic often happens under the action of a dynamic load. Theaccumulation of fatigue damage of metallic frames leads to the result of surface fatiguemicrocracks. Microcracks would result in the exoelectrons emission. In this paper therelationship between exoelectrons emission and the fatigue damage microcracks of metallicframes is studied. A new type of the Double Grid Air Counter (DGAC) was designed.Experiments have shown that the systems of the DGAC are sound and work efficiently, and themeasurement precision was important, and valuable in study and detection of formation andgrowth of microcracks of the metallic members surface in the initial stage offatigue da,nage.
Exoelectron is low energy electrons delayed emission from a metallic member surface.The fatigue damage of the metallic often happens under the action of a dynamic load. Theaccumulation of fatigue damage of metallic frames leads to the result of surface fatiguemicrocracks. Microcracks would result in the exoelectrons emission. In this paper therelationship between exoelectrons emission and the fatigue damage microcracks of metallicframes is studied. A new type of the Double Grid Air Counter (DGAC) was designed.Experiments have shown that the systems of the DGAC are sound and work efficiently, and themeasurement precision was important, and valuable in study and detection of formation andgrowth of microcracks of the metallic members surface in the initial stage offatigue da,nage.
