Exploring the anisotropic damage behaviour during the scratching process of SiCf/SiC composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-01-07 DOI:10.1016/j.compositesa.2025.108717

Qihao Xu , Jinlong Wang , Yi-Qi Wang , Hang Gao

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引用次数: 0

Abstract

SiC_f/SiC composites are ideally suited for demanding high-temperature applications, such as high thrust-weight ratio aeroengines, and accident-tolerant fuel claddings. However, their anisotropic damage behaviour causes the significant challenge in high-quality machining. To explore this difficulty, linear loading nanoindentation and scratch tests were conducted. The results indicated significant variations in mechanical property and damage resistance across different structural locations. The damage behaviour in fibre bundle region was observed to differ from matrix-rich region, depending on the fibre-related scratch direction ϕ. Except for ϕ = 0° and 90°, the two sides of scratch exhibited an asymmetric damage feature. At ϕ = 90°, the largest lateral damage was observed. Fibre–matrix interface debonding was crucial, accompanied by complex force fluctuations. Based on beam bending theory and fracture mechanics, a microstructure-based model was developed to explain the mechanisms of debonding and fibre fracture at different fibre orientations, showed consistency with the evaluated results.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.