A monitoring method for impact damage of composite structures

A composite material and structural impact technology, which is applied in the real-time measurement and evaluation of composite material structural damage and the monitoring of composite material structural impact damage, to achieve the effect of improving safety and reliability, promoting development and low cost

Active Publication Date: 2021-11-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gravel impact, hail, tool impact, etc. are common impact conditions. At present, there are few online monitoring methods for impact damage of composite structures.

Method used

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  • A monitoring method for impact damage of composite structures
  • A monitoring method for impact damage of composite structures
  • A monitoring method for impact damage of composite structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail:

[0032] as attached figure 1 As shown, the parts and systems involved in a monitoring method for impact damage of a composite material structure in the present invention include: a composite material structure 1, an impact object 2, a camera 3, an impact object identification and positioning module 4, a light source control system 5, an ultraviolet light Launcher 6, damage area 7, impact damage identification system 8, damage assessment and early warning system 9.

[0033] as attached figure 2 Shown, the present invention a kind of monitoring method of impact damage of composite material structure, comprises the following steps:

[0034] Step S1, use a steel hammer with a diameter of 12.7mm to conduct impact tests and simulations of different energies on multiple composite structural parts, obtain the relationship between impact energy, impact pit ...

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PUM

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Abstract

With their excellent performance, composite materials are more and more widely used in aviation, high-speed rail, ships, automobiles, wind power and other fields. Impact can greatly reduce the load-bearing performance of composite material structures. Impact damage is the main threat to the service safety of composite material structures. one. The invention relates to a monitoring method for impact damage of composite material structures. Based on damage mechanics, impact dynamics and image recognition technology of composite material structures, the identification of impact objects, impact energy estimation, impact damage location, impact damage degree evaluation, Danger warning and other functions, low cost, wide application range, can improve the safety and reliability of composite material structures in service, and at the same time help to realize the online collection and network summary of damage information in the process of equipment service, and provide a basis for the composite material structure. Optimal design provides data support to promote the engineering application of composite structures and the development of intelligent equipment.

Description

technical field [0001] The invention relates to real-time measurement and evaluation of composite material structure damage, in particular to a monitoring method for composite material structure impact damage, belonging to the technical fields of new materials and intelligent manufacturing. Background technique [0002] Composite materials have the advantages of low density, high specific strength and specific modulus, strong designability, good damping characteristics, good fatigue performance, and corrosion resistance. They are more and more used in aviation, high-speed rail, ships, automobiles, wind power and other fields. Widely, there are more and more composite material structures in aircraft, trains, ships, automobiles and other equipment. How to ensure the service safety of these composite material structures is an engineering problem that needs to be solved urgently. Studies at home and abroad have shown that impact can greatly reduce the load-bearing performance of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/30G01N3/06G01M7/08G06T7/00
CPCG01M7/08G01N3/068G01N3/30G01N2203/0019G01N2203/0039G01N2203/0075G01N2203/0647G01N2203/0682G06T7/0002G06T2207/10004G06T2207/20024G06T2207/20192G06T2207/30108
Inventor 李立军
Owner BEIHANG UNIV
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