Device and method for judging metal fatigue crack hammering closure
A technology for fatigue cracks and closing devices, which is applied in the direction of material resistance, can solve problems such as the inability to assess the quality of hammering closures, and achieve the effects of facilitating large-scale production, improving efficiency, and expanding the scope of application
Active Publication Date: 2021-09-07
HOHAI UNIV
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Problems solved by technology
[0004] Since there is no corresponding method and device for judging the hammer closure of metal fatigue cracks at present, the quality of hammer closure cannot be evaluated. Therefore, it is beneficial to invent a method and device for judging metal fatigue crack hammer closure. To evaluate the effect of metal fatigue crack hammer closure, to fill the technical gap in the quality assessment method of hammer closure, to meet the urgent needs of the promotion and application of metal crack hammer closure technology
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Embodiment Construction
[0057] The specific implementation, structure, features and effects provided by the present invention will be described in detail below in conjunction with the accompanying drawings.
[0058] like Figures 8 to 13 As shown, the device for judging metal fatigue crack hammering closure according to the present invention includes a casing, a power supply device, and a potential sensing device; wherein:
[0059]The power supply device includes a battery box arranged in the casing, and a power supply terminal fixed at the bottom of the casing; the battery box is connected to the power supply terminal fixed at the bottom of the casing through wires;
[0060] The potential sensing device includes a micro potentiometer, a chip, a voltage input terminal, and a spring wire; the micro potentiometer and the chip are all arranged in the casing; the voltage input terminal is arranged at the bottom of the casing;
[0061] The miniature potentiometer is connected with the voltage input termi...
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The invention discloses a device and method for judging the hammering closure of metal fatigue cracks. The device includes a casing, a power supply device, and a potential sensing device; the power supply device includes a battery box arranged in the casing, and a power supply terminal fixed at the bottom of the casing; the battery box is connected to the power supply terminal fixed at the bottom of the casing through a wire; the potential sensing device , including a miniature potentiometer, a chip, a voltage input terminal, and a spring wire; the miniature potentiometer and the chip are all arranged in the housing; the voltage input terminal is arranged at the bottom of the housing; connection; the chip is provided with a control element and is connected to a miniature potentiometer. It can be seen from this that the present invention fills the technical blank of the hammering closure quality evaluation method, and satisfies the popularization and application of metal crack hammering closure technology.
Description
technical field [0001] The invention belongs to the field of repairing metal fatigue cracks, and in particular relates to a method and a device for judging the hammering closure of metal fatigue cracks. Background technique [0002] Under the action of cyclic load, the metal structure is prone to fatigue state, and cracks will appear on its surface, which will have a great impact on the stress of the structure and directly threaten the safety of engineering structures and machinery. Practice has proved that metal fatigue is a very common phenomenon. According to statistics for more than 150 years, more than 80% of the damage in metal parts is caused by fatigue. [0003] In order to prevent metal fatigue cracks from causing further damage, a hammering closure repair method for steel bridge fatigue cracks disclosed in Chinese patent document CN103952985A is adopted, and a pneumatic hammer is used to apply a hammering load to the metal fatigue cracks to promote the closure of ...
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IPC IPC(8): G01N27/04
Inventor 吉伯海袁周致远赵炜傅中秋
Owner HOHAI UNIV