Residual Stresses in Intrinsic UD-CFRP-Steel-Laminates - Experimental Determination, Identification of Sources, Effects and Modification Approaches
Residual Stresses in Intrinsic UD-CFRP-Steel-Laminates - Experimental Determination, Identification of Sources, Effects and Modification Approaches
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固有 UD-CFRP-钢层压板中的残余应力 - 实验测定、来源识别、影响和修改方法
DOI：
10.4028/www.scientific.net/msf.825-826.369
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. Sinapius
中科院分区：
文献类型：
--
作者：
R. Prussak;D. Stefaniak;C. Hühne;M. Sinapius
本文重点研究纤维金属层压板中与工艺相关的热残余应力的降低及其对机械性能的影响。研究了共固化粘合钢/碳环氧复合材料混合结构制造过程中的不同修改。对 UD-CFRP-Steel 样本进行具体检查，在制造过程中改变温度、压力或使用热膨胀夹具。然后测量这些参数对不对称样本的挠度或对称样本的屈服强度测量的影响。记录拉伸强度以研究热残余应力对机械性能的影响。进行冲击测试是为了确定在特定冲击能量下对所产生的损坏区域的影响。实验表明，在 UD-CFRP-Steel 试样加工过程中进行的研究修改可以显着降低热残余应力，从而提高拉伸强度。
This paper focuses on the reduction of process-related thermal residual stress in fiber metal laminates and its impact on the mechanical properties. Different modifications during fabrication of co-cure bonded steel/carbon epoxy composite hybrid structures were investigated. Specific examinations are conducted on UD-CFRP-Steel specimens, modifying temperature, pressure or using a thermal expansion clamp during manufacturing. The impact of these parameters is then measured on the deflection of asymmetrical specimens or due yield-strength measurements of symmetrical specimens. The tensile strength is recorded to investigate the effect of thermal residual stress on the mechanical properties. Impact tests are performed to determine the influence on resulting damage areas at specific impact energies. The experiments revealed that the investigated modifications during processing of UD-CFRP-Steel specimens can significantly lower the thermal residual stress and thereby improve the tensile strength.