A comparative analysis of quasi-static indentation and low-velocity impact on the free edges of CFRP composite laminates

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY Composites Part B: Engineering Pub Date : 2025-03-13 DOI:10.1016/j.compositesb.2025.112395

Nian Li , Jian Du , Rui Liu , Hsiao Mun Lee , Heow Pueh Lee

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Abstract

A comparative study was conducted to evaluate the feasibility of using quasi-static indentation for characterizing the dynamic behavior of CFRP laminated composites subjected to free edge-on impact, focusing on both damage resistance and tolerance. Inspection methods, including ultrasonic C-scanning, 3D X-ray CT reconstruction, in-situ DIC measurement, etc., were utilized to examine damage status and mechanical responses induced by quasi-static edge-on indentation, dynamic edge-on impact and subsequent compression. The analysis revealed comparable failure mechanisms underlying the quasi-static and dynamic testing: wedge-shaped debris and bending fracture of the sub-laminates. In compression, local buckling of sub-laminates caused delamination propagation, ultimately resulting in structural collapse due to fiber fracture. Quasi-static testing provided a good approximation of dynamic edge-on force-displacement behavior without force signal oscillations. A compressive strength reduction of approximately 30 %, for barely visible impact damage (BVID) induced by edge-on loading, emphasized the significance of edge-on impact damage tolerance, where the more accessible quasi-static method could be employed.

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.