Stress sensor and preparation method thereof
A technology of stress sensor and cube, which is applied in the field of measurement, can solve problems such as many vibration components, difficult signal analysis, and inability to obtain the response of material mechanical properties, so as to achieve the effect of reducing vibration components, reducing noise interference, and facilitating the corresponding information of mechanical properties
Active Publication Date: 2020-05-08
TSINGHUA UNIV
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Problems solved by technology
However, with the further increase of the loading rate, the structural vibration response of the sensor is inevitable. In fact, the vibration of the sensor is often formed by multi-mode superposition, coupled with other interference components such as noise, and the obtained measurement signal is mixed with more vibration components. , it is difficult to analyze the signal
Under a certain strain rate, it is basically impossible to obtain the mechanical characteristic response of the material.
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[0040] In order to make the purpose, technical solution and advantages of the present application clearer, the stress sensor of the present application and its preparation method will be further described in detail through the following examples and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
[0041] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or ...
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The application relates to a stress sensor and a preparation method thereof. A to-be-measured piece fixing part is provided with a central symmetry axis, and one end of a clamping part is vertically fixed at the center of one surface of the to-be-measured piece fixing part. And the axis of the clamping part passes through the central symmetry axis. Therefore, the stress sensor integrally forms anaxial-symmetry structure. And thus, the single-mode vibration state can be guaranteed; when a strain gauge is fixed to a strain gauge fixing position to obtain a measurement signal, vibration components in the measurement signal can be reduced, signal analysis is facilitated, the test accuracy is improved, the signal analysis difficulty is reduced, and the work efficiency is improved.
Description
technical field [0001] The present application relates to the field of measurement, in particular to a stress sensor and a preparation method thereof. Background technique [0002] The existing medium and high strain rate dynamic measurement sensor design only considers the low-order natural vibration frequency of the structure and the system damping ratio parameters. It is expected to increase the sensor’s natural frequency based on a simple sensor lightweight method, thereby preventing the structural ringing effect and ensuring signal accuracy. . However, with the further increase of the loading rate, the structural vibration response of the sensor is inevitable. In fact, the vibration of the sensor is often formed by multi-mode superposition, coupled with other interference components such as noise, and the obtained measurement signal is mixed with more vibration components. , it is difficult to analyze the signal. Under a certain strain rate, the mechanical characteris...
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IPC IPC(8): G01L1/22
CPCG01L1/2206
Inventor 应鹏飞陈文韬葛宇龙夏勇周青
Owner TSINGHUA UNIV