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<p>Carbon fiber reinforced polymer (CFRP) exhibits superior performance while there is a contradiction between the defects and practical application. To explore the removal mechanism and damage behaviors of CFRP in orthogonal cutting, this investigation delved into the effects of fiber orientation and machining parameters using an innovative in-situ imaging approach. The cutting force was calculated by taking the processing configuration as input, and the material parameters were determined by comparing this with experimental measurements. By using digital image correlation (DIC) technique, displacement and strain fields were established, which showed that deformation was predominantly localized in the chipping region. Through stress state derivation and damage initiation criteria, the stress fields were associated with damage behaviors. The results indicated that fiber orientations demonstrated correspondence with compression and tension in both transverse and longitudinal directions. Except at 90°, the stress hierarchy (135° &gt; 0° &gt; 45°) correlated strongly with cutting force. Both the damage determination factors and the average cutting force exhibited orientation-dependent parametric sensitivity. This research is vital for enhancing the understanding of material structure and offering critical insights to improve machining quality.</p>

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Investigation of UD-CFRP removal mechanism and damage behaviors in orthogonal cutting using an in-situ imaging approach

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Yufei Tang,
  • Minghui Yang,
  • Chaoqun Wu,
  • Wenjian Huang,
  • Huayi Cai,
  • ShiYu Cao

摘要

Carbon fiber reinforced polymer (CFRP) exhibits superior performance while there is a contradiction between the defects and practical application. To explore the removal mechanism and damage behaviors of CFRP in orthogonal cutting, this investigation delved into the effects of fiber orientation and machining parameters using an innovative in-situ imaging approach. The cutting force was calculated by taking the processing configuration as input, and the material parameters were determined by comparing this with experimental measurements. By using digital image correlation (DIC) technique, displacement and strain fields were established, which showed that deformation was predominantly localized in the chipping region. Through stress state derivation and damage initiation criteria, the stress fields were associated with damage behaviors. The results indicated that fiber orientations demonstrated correspondence with compression and tension in both transverse and longitudinal directions. Except at 90°, the stress hierarchy (135° > 0° > 45°) correlated strongly with cutting force. Both the damage determination factors and the average cutting force exhibited orientation-dependent parametric sensitivity. This research is vital for enhancing the understanding of material structure and offering critical insights to improve machining quality.