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Bidirectional strain sensor device

A strain sensor and spring sheet technology, applied in the field of sensors, can solve the problems of conflicting sensors and inconvenient placement of sensors, and achieve the effects of easy processing, simple structure and high precision

Inactive Publication Date: 2015-01-07
嘉兴市博豪家纺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the direction of the two-way strain of the specimen is cross-shaped, so the positions of the two strain sensors conflict, and it is inconvenient to place the sensors

Method used

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Embodiment Construction

[0025] The present invention is described in further detail below in conjunction with accompanying drawing:

[0026] see Figure 1-9 , the bidirectional strain sensor device of the present invention includes a cuboid 5 , three springs 4 and three rigid pins 1 , 2 , 3 . Wherein the spring pieces 4 are attached with strain gauges, and the upper ends of the three spring pieces 4 are vertically connected to the three sides of the cuboid 5 respectively, and then the lower ends of the three spring pieces 4 are respectively connected with a rigid pin. Such as Figure 6-7 , the width at both ends of the spring sheet 4 is greater than the width at the middle, and screw holes are respectively opened at both ends. Such as Figure 4-5 , The cuboid 5 is provided with screw holes on three sides respectively, and a vertical through hole is provided between the upper end surface and the lower end surface. The three spring sheets 4 are fixedly connected with the three sides of the cuboid 5...

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Abstract

The invention discloses a bidirectional strain sensor device, which includes a cuboid, three leaf springs and three rigid pins, wherein strain discs are adhered to the leaf springs; the upper ends of the three leaf springs are vertically connected onto three lateral sides of the cuboid respectively; and the lower end of each leaf spring is connected with one rigid pin respectively. The bidirectional strain sensor provided by the invention only needs one sensor to measure strain in two directions of a cross test piece in a bidirectional loading test, overcomes the shortcomings that in the prior art, two strain sensors are needed and positions are contradictory, so that the installation is inconvenient; and the sensor has high accuracy, is simple in structure and easy for processing, and can meet requirements of all respects.

Description

technical field [0001] The invention belongs to the technical field of sensors, and relates to a strain sensor, in particular to a bidirectional strain sensor device. Background technique [0002] Bidirectional loading test is an effective method to study the elastoplastic behavior of materials under complex stress states. For plates, the common method is to use a cross-shaped test piece to conduct a biaxial tensile test on a biaxial loading testing machine. The advantage of this method is that the loads in two directions can be controlled independently, and any yield point of the material under the bidirectional tensile stress state can be obtained by changing the load ratio of the two directions, so that the yield point of the material under the bidirectional stress state can be studied more comprehensively. Behavior. Foreign scholars have conducted a large number of biaxial tensile tests on steel, aluminum alloy, magnesium alloy and other plates by establishing a hydrau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16
Inventor 方钦志胡勤伟任乃胜
Owner 嘉兴市博豪家纺有限公司
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