Impact Toughness and Fractographic Peculiarities of a Composite Pump Rod Fracture

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science Pub Date : 2024-06-18 DOI:10.1007/s11003-024-00818-2
H. V. Krechkovska, B. M. Bakun, O. Z. Student, I. B. Kopei
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Abstract

The impact toughness of each component (fibreglass shell and carbon-plastic core) of the composite pump rod was evaluated, and the fractographic peculiarities of the impact-tested samples fracture were investigated. The fibres inside the rod shell are fractured by a brittle cleavage mechanism and the polymer matrix by a ductile mechanism, with its failure into small fragments. A specific feature of the rod core is strips of unidirectional carbon fibres with periodic reorientation, with the change of crack propagation direction at the transitions between adjacent strips. This structurally conditioned reorientation of the fracture surface inside the rod core retarded the fracture of both the core material and the rod as a whole.

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复合泵杆断裂的冲击韧性和断面特征
评估了复合材料泵杆各组成部分(玻璃纤维外壳和碳塑料内芯)的冲击韧性,并研究了冲击试验样品断裂的断口特征。杆壳内的纤维通过脆性劈裂机制断裂,聚合物基体通过韧性机制断裂,断裂成小碎片。棒芯的一个特点是单向碳纤维条具有周期性的重新定向,在相邻条之间的过渡处裂纹传播方向发生变化。棒芯内部断裂面的这种结构性重新定向,可延缓棒芯材料和整个棒材的断裂。
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来源期刊
Materials Science
Materials Science 工程技术-材料科学:综合
CiteScore
1.60
自引率
44.40%
发文量
63
审稿时长
4-8 weeks
期刊介绍: Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.
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