Carbon fiber composite material impact force measuring device and method

A technology of composite materials and measuring devices, applied in measuring devices, force/torque/work measuring instruments, measuring electricity, etc., can solve the problems of not too many researches on damage and damage effects, and achieve the effect of filling the technical gap

Active Publication Date: 2016-02-03
XI AN JIAOTONG UNIV
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Problems solved by technology

The American Society of Mobile Engineers SAE, the American military standard MILSTD and the European Civil Aviation Organization EUROCAE have made detailed regulations on the test waveform and test method of the direct effect of lightning on the aircraft and its components, but the impact force of the carbon fiber composite laminate under the action of lightning However, there are not many studies on the damage and damage effects caused by

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  • Carbon fiber composite material impact force measuring device and method
  • Carbon fiber composite material impact force measuring device and method
  • Carbon fiber composite material impact force measuring device and method

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Embodiment Construction

[0023] The present invention is described in further detail below in conjunction with accompanying drawing:

[0024] see Figure 1-3 : The present invention at first proposes a kind of impact force measuring device of carbon fiber composite material, comprises pulse power supply 1, tested carbon fiber composite material laminated plate 2, piezoelectric sensor 3, piezoelectric signal processing unit 4, pulse current detection unit 5 and computer control With the analysis and processing unit 6; the high-voltage output end of the pulse power supply 1 is connected with the metal rod-shaped electrode 12, and the metal rod-shaped electrode 12 is perpendicular to the surface of the tested carbon fiber composite material laminate 2 and is facing the center of the tested carbon fiber composite material laminate 2 and There is a certain distance from the center (the distance can be adjusted), and the other end face of the carbon fiber composite laminate 2 to be tested is connected to th...

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Abstract

The invention discloses a carbon fiber composite material impact force measuring device and method. According to the invention, the impact voltage or the impact intensity of a controllable intensity pulse power supply is controlled by an industrial control computer through a programmable controller (PLC); the impact voltage and pulse current flowing through a carbon fiber composite laminated plate are sampled by a voltage sensor and a pulse current detection unit, are acquired by an oscilloscope and are transmitted to a computer control and analysis processing unit. A piezoelectric signal which is processed by a piezoelectric signal processing unit is input into an A / D data acquisition system, and an analog digital conversion result is transmitted to the computer control and analysis processing unit. A computer processes and analyzes the received data to acquire the law of the relationship among the impact voltage borne by the carbon fiber composite laminated plate, the flowing impact current and the deformation or the impact force of the laminated plate.

Description

technical field [0001] The invention belongs to the technical field of material testing, and relates to the measurement of a carbon fiber composite material, in particular to a method and a measurement device for measuring the impact force of a carbon fiber composite material under the action of lightning. Background technique [0002] Carbon fiber composite materials not only have the characteristics of low density, high strength, high modulus, high temperature resistance, and chemical corrosion resistance, but also have the softness and processability of textile fibers. They are widely used in various fields such as aerospace, military and civil industries. With the improvement of aircraft design and the advancement of carbon fiber composite material technology, the use of carbon fiber reinforced polymer composite material CFRP (CarbonFiberReinforcedPolymers) in large civil aircraft, military aircraft, drones and stealth aircraft has continued to increase. Since 1960, McDon...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01R31/00
Inventor 姚学玲陈景亮孙晋茹
Owner XI AN JIAOTONG UNIV
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