Prediction method for composite microwave curing temperature field

A composite material, microwave curing technology, used in the temperature field prediction of microwave cured composite materials, and the field of microwave curing of composite materials, it can solve the problems of lack of microwave prediction cost, accuracy can not meet the requirements of use, etc., to save cost, shorten cycle, predict high precision effect

Active Publication Date: 2015-06-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The purpose of the present invention is to invent a temperature field for microwave-cured composite materials to solve the problems that the existing microwave-cured composite material

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  • Prediction method for composite microwave curing temperature field
  • Prediction method for composite microwave curing temperature field
  • Prediction method for composite microwave curing temperature field

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] A method for predicting the microwave curing temperature field of composite materials. Firstly, establish a microscale model of reinforcement and resin matrix, then calculate the electromagnetic parameters and microwave attenuation model of the microscale model, and then transfer the parameters and attenuation model to the macroscale model , and finally, the microwave field and temperature field distributions of composite materials are calculated and predicted by macro-scale models. The microscopic model is a multi-dimensional model taken from a real composite material section, including a reinforcement and a resin matrix, with a scale ranging from 1 to 2900 microns. The input condition of the microscopic scale model is the physical and electromagnetic parameters of the microscopic material, and the output is the overall microscopic The physical ...

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Abstract

The invention relates to a prediction method for a composite microwave curing temperature field and provides a prediction method for a microwave field and a temperature field in the microwave heating curing process of a resin matrix composite. The prediction method comprises the steps that a micro-scale model and a macro-scale model of a reinforcement body and a resin matrix are established, attenuation of microwaves in a material is mainly included in the micro-scale model, and reaction heat release of the microwave curing composite and heat convection and heat radiation of the composite and a mould and the peripheral room temperature environment are mainly included in the macro-scale model. The coupled solution is conducted on the micro-scale model and the macro-scale model so as to accurately predict and analyze the microwave and temperature distribution of the microwave curing composite.

Description

technical field [0001] The invention relates to a composite material curing technology, in particular to a composite material microwave curing technology, in particular to a method for predicting the temperature field of a microwave curing composite material. Background technique [0002] Fiber-reinforced resin-based composites have a series of superior properties such as high specific strength, low density, high temperature resistance, corrosion resistance, fatigue resistance, good damping and shock absorption, and designable performance. They are widely used in aerospace, energy transportation, and shipbuilding fields. . At present, composite materials are mainly cured by autoclave, but it is difficult to cure and form large-thickness composite materials in autoclave, and the curing time is long and energy consumption is high. Compared with the traditional autoclave curing technology, microwave curing technology for composite materials can effectively cure and form large-...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李迎光李楠垭郝小忠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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