Ogunleye Raphael Olabanji, Rusnakova Sona
Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlin, Czech Republic.
Polymers (Basel). 2021 Dec 24;14(1):60. doi: 10.3390/polym14010060.
This review examines various studies on reducing tensile stresses generated in a polymer matrix composite without increasing the mass or dimension of the material. The sources of residual stresses and their impacts on the developed composite were identified, and the different techniques used in limiting residual stresses were also discussed. Furthermore, the review elaborates on fibre-prestressing techniques based on elastically (EPPMC) and viscoelastically (VPPMC) prestressed polymer matrix composites, while advantages and limitations associated with EPPMC and VPPMC methods are also explained. The report shows that tensile residual stresses are induced in a polymer matrix composite during production as a result of unequal expansion, moisture absorption and chemical shrinkage; their manifestations have detrimental effects on the mechanical properties of the polymer composite. Both EPPMC and VPPMC have great influence in reducing residual stresses in the polymer matrix and thereby improving the mechanical properties of composite materials. The reports from this study provide some basis for selecting a suitable technique for prestressing as well as measuring residual stresses in composite materials.
本综述考察了各种关于在不增加材料质量或尺寸的情况下降低聚合物基复合材料中产生的拉应力的研究。确定了残余应力的来源及其对所开发复合材料的影响,并讨论了用于限制残余应力的不同技术。此外,本综述详细阐述了基于弹性(EPPMC)和粘弹性(VPPMC)预应力聚合物基复合材料的纤维预应力技术,同时也解释了与EPPMC和VPPMC方法相关的优点和局限性。报告表明,在生产过程中,由于膨胀不均、吸湿和化学收缩,聚合物基复合材料中会产生拉伸残余应力;它们的表现对聚合物复合材料的机械性能有不利影响。EPPMC和VPPMC在降低聚合物基体中的残余应力从而改善复合材料的机械性能方面都有很大影响。本研究的报告为选择合适的预应力技术以及测量复合材料中的残余应力提供了一些依据。