一种通过时间-温度叠加自动获取树脂基复合材料主表面的方法,Polymer Composites

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一种通过时间-温度叠加自动获取树脂基复合材料主表面的方法
Polymer Composites ( IF 4.8 ) Pub Date : 2022-08-10 , DOI: 10.1002/pc.26951
Chengyu Guan ₁ , Zhiyong Yang ₂ , Huimin Li _{1,

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Affiliation

时间-温度叠加（TTS）是粘弹性力学的一种数据处理方法，它是通过将不同温度下的响应平移叠加得到超出测试时间或频率的主曲线来实现的。在这项研究中，开发了一种自动移位方法来获得碳纤维增强塑料和环氧树脂的主表面。第一步，使用插值法处理通过频率扫描/温度步进或连续升温法测量的动态力学分析测试数据。第二步，利用广义Maxwell模型的Prony级数拟合各温度下的储能模量和损耗模量，使拟合曲线具有物理意义和因果关系。第三步，通过最小化两条拟合曲线之间的垂直距离的平方和来实现自动移位。最后一步，通过 Prony 级数拟合和插值创建主曲面，在主曲面上可以找到任意温度、频率或时间下的储能模量、损耗模量、损耗因子和弛豫模量。根据重量同时考虑储能模量和损耗模量。研究了不同权重的影响。

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A method of automatically obtaining master surfaces of resin matrix composites by time–temperature superposition

The time–temperature superposition (TTS) is a data processing method of viscoelastic mechanics, which is realized by translating and superposing the responses at different temperatures to get master curves beyond the test time or frequency. In this study, an automatic shift method is developed to obtain master surfaces of the carbon fiber reinforced plastics and epoxy resin. First step, an interpolation is used to process the dynamic mechanical analysis test data measured by frequency sweep/temperature step or continuous heating-up method. Second step, the Prony series of the generalized Maxwell model are used to fit the storage and loss modulus at each temperature, which makes the fitting curves have physical meaning and causality. Third step, the automatic shift is achieved by minimizing the sum of squares of the vertical distances between two fitting curves. Last step, master surfaces are created by Prony series fitting and interpolation, and the storage modulus, loss modulus, loss factors, and relaxation modulus at any temperature, frequency or time can be found on the master surfaces. Both storage modulus and loss modulus are considered at same time according to the weight. The effects of different weights are studied.

更新日期：2022-08-10

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