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Multidimensional rod structure array pressure sensor and integration method thereof

A pressure sensor and sensor technology, which is applied in the direction of fluid pressure measurement using piezoelectric devices and the measurement of the property force of piezoelectric devices, can solve the problem of reducing the interlayer bonding force of composite materials and affecting the interlayer bonding strength of composite materials, etc. problem, to achieve the effect of good use and service

Pending Publication Date: 2017-05-24
杨力 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these integration methods will affect the interlayer bonding strength of composite materials, and it is necessary to realize the detection of stress and strain without greatly reducing the interlayer bonding strength of composite materials.

Method used

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  • Multidimensional rod structure array pressure sensor and integration method thereof
  • Multidimensional rod structure array pressure sensor and integration method thereof
  • Multidimensional rod structure array pressure sensor and integration method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] An array pressure sensor with a multi-dimensional rod structure described in this embodiment is applied to a composite material wing structure, and the wall thickness of the composite material is 12 mm. The multidimensional rod array sensor 11 is composed of a multidimensional rod sensor 112 and a wire 111 forming a 10x32 array; for the multidimensional rod sensor 112, see figure 2 , its length is 3mm, including 8 rods, the rods are arranged in a rectangular coordinate shape in space, and 8 wires are drawn from a single multidimensional rod sensor 112 to connect with the wire 111; the material of the single rod is PVDF piezoelectric material, and its diameter is 1.5mm, tension, compression or combined tension and compression loads will generate a signal. The wires connect a single multi-dimensional bar sensor into an 8x30 two-dimensional array sensor, see Figure 7 .

[0025] The integration method of the first embodiment

[0026] The shape of the array sensor descr...

Embodiment 2

[0028] An array pressure sensor with a multi-dimensional rod structure described in this embodiment is applied to a fuselage structure made of composite material, and the wall thickness of the composite material is 15 mm. The array sensor 11 is composed of a plurality of multidimensional rod sensors 112 arranged in an array, and its height is 3mm. This multidimensional rod sensor includes 3 rods, and the rods are arranged in a spatial rectangular coordinate shape. Figure 4 , 3 wires 111 are connected to a single multi-dimensional rod sensor. The material of the single rod is piezoelectric material with a diameter of 1.5 mm. It will generate signals under tension, compression or combined tension and compression loads. The wires connect single multi-dimensional rod sensors into a barrel-shaped array sensor. There are 9 barrel arrays arranged in the circumferential direction, and 10 layers arranged in the longitudinal direction, see Figure 8 ;During the laying process of the l...

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Abstract

The present invention relates to a multidimensional rod structure array pressure sensor. The sensor comprises: a plurality of multidimensional rod sensors and wires. As shown in the figures, the multidimensional rod sensors generally comprise 3-8 rods, the rods are made of flexible piezoelectric materials, and the rods are subjected to tension, pressure or tension combined load to generate signals; the wires are configured to connect one single multidimensional rod sensor into a two-dimensional or three-dimensional array sensor; the signals generated by the sensor is led out through the wires; and the integration method thereof is configured to bury the array sensor into the composite material structure in the manufacturing process of the composite materials. The multidimensional rod structure array pressure sensor can detect the changing of the stress strain of the detection structure so as to detect the portions which are damaged and realize the safety service of the structure.

Description

technical field [0001] The invention belongs to pressure sensor technology, in particular to an array type pressure sensor with a multi-dimensional rod structure. Background technique [0002] At present, the technology based on intelligent structural stress has been greatly developed. It embeds or pastes the sensing system in the main composite material structure as the nervous system, and at the same time introduces signal information processing technology, so that it can perceive and predict the deformation and defects inside the structure. The unhealthy state of a series of structures such as damage, corrosion and failure. The concept of structural health monitoring will transform the widely used offline, static, and passive damage detection of materials and structures into online, dynamic, and active health status monitoring, which will greatly improve the safety of structures and extend the life of structures. , reduce structural maintenance costs. [0003] For examp...

Claims

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Application Information

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IPC IPC(8): G01L1/16G01L9/08
CPCG01L1/16G01L9/08
Inventor 杨力徐鑫良
Owner 杨力
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