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Apparatus and method for testing mechanical properties of fiber-reinforced composite materials during degradation

A composite material and fiber-reinforced technology, which is applied in the direction of measuring devices, applying stable tension/pressure to test the strength of materials, and analyzing materials, can solve the problem of insufficient design of environmental factors for fiber-reinforced composite materials and research work on the degradation of fiber-reinforced composite materials Limited, material mechanical properties decline and other issues

Active Publication Date: 2020-10-23
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, its own structural problems are also very prominent, especially under the influence of excitation and external environment, it will degrade and lead to the decline of the mechanical properties of the material. The size of its influence is particularly important
[0007] For a long time, the research work on the degradation of fiber reinforced composite materials has been very limited. The main reason is that the excitation method is difficult to solve
In addition, the previous test benches were not comprehensive enough for the environmental factors of fiber reinforced composites and could not effectively combine vibration factors, environmental factors and mechanical tests into a mechanism

Method used

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  • Apparatus and method for testing mechanical properties of fiber-reinforced composite materials during degradation
  • Apparatus and method for testing mechanical properties of fiber-reinforced composite materials during degradation
  • Apparatus and method for testing mechanical properties of fiber-reinforced composite materials during degradation

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Embodiment Construction

[0040] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] A device for testing the mechanical properties of fiber-reinforced composite materials when degraded, including a moving gear shifting exciter 1, a continuously variable transmission 2, a fixture 3, a fixed frame 4, a support 5, a bottom plate 6, a ball screw 7, a transmission system 8, Multifunctional environment box 9, ventilation device 10, vibration-absorbing fixed plug 11, screw drive plate 12, main motor 13, auxiliary motor 14, vibrating needle device 15, composite beam 16;

[0042] The lower end of the fixed frame 4 is fixed by a support 5, the bottom of the support has a bottom plate 6 connected to the ground through anchor bolts, the ball screw 7 is connected to the fixed frame 4 by threads; the transmission system 8 is supported by the fixed frame 4 , is transmitted to the ball screw 7 through the main motor 13,...

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Abstract

The invention relates to the technical field of testing equipment, and specifically to a device and method for testing the mechanical properties of fiber-reinforced composite materials during degradation, including a mobile variable-speed exciter, a continuously variable transmission, a clamp, a fixed frame, a support, a base plate, and a ball screw. , transmission system, multi-functional environmental box, ventilation device, vibration damping fixed plug, screw drive plate, main motor, auxiliary motor, vibrating needle device, composite beam. This tester can stretch and vibrate fiber-reinforced composite beams and introduce environmental factors. There are five factors: vibration, temperature, humidity, air oxygen content and ultraviolet intensity. It can not only achieve a single load or environmental factor loading, but also The above factors can be combined arbitrarily. Then the environmental factors adjusted according to the requirements can maintain the mechanism, which can be combined with stretching and vibration as above. In addition, the thermal environment provided by this test chamber has a temperature gradient.

Description

technical field [0001] The invention relates to the technical field of testing equipment, in particular to a device and method for testing the mechanical properties of fiber-reinforced composite materials when degraded, and a device capable of measuring the mechanical properties of fiber-reinforced composite materials when degraded. Background technique [0002] Fiber-reinforced composite materials have high specific strength, high specific modulus, good thermal stability, and certain damping and vibration reduction capabilities, so they are widely used in important fields such as aviation, aerospace, ships, and weapon industries. At present, there are a large number of various composite structural parts made of this type of material in engineering practice, such as composite wings used in helicopters and jet aircraft, high-temperature turbine blades made of fiber / ceramic matrix composites in aero-engines, etc. . Because composite materials and structures are often in a the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02G01N3/18
CPCG01N3/02G01N3/18
Inventor 李晖周星辰罗忠任利聪张培谭龙飞张文彬邵震
Owner NORTHEASTERN UNIV LIAONING
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