Experimental study of machinability of CHSF/PR composites by end milling 机器收录·待核验

mxdswech7na25c23

Chopped high-silica fiber-reinforced phenolic resin (CHSF/PR) composites are vital in the aerospace field for their exceptional strength-to-weight ratio and near-net-shape manufacturability. Nonetheless, their compression-molded interlocking structures cause complex machining dynamics, creating challenges in surface quality, removal mechanisms, and tool wear. This study investigated the cross-scale effects of fiber distribution using orthogonal experiments and multi-scale characterization. Experimental results showed CHSF/PR composites have significantly higher cutting forces than unidirectional composites, demonstrating enhanced machining resistance. Force fluctuations (20% amplitude) stemmed from competitive shear fracture and fiber buckling. Surface roughness increased by 110% and 53% with cutting width and depth, respectively, attributed to pit-delamination hybrid damage triggered by abrupt changes in fiber orientation. Tool wear demonstrated a critical distance threshold; post-coating-delamination wear rates surged due to abrasive particle embedding and interfacial thermal stress concentration. This study establishes a theoretical framework for optimizing CHSF/PR composites machining, providing critical technical foundations for precision aerospace components.

本卡描述如含来自官方页的原文片段,其版权归原作者,不在本站 CC-BY 4.0 许可范围(见关于与许可)。

落地页

https://tandf.figshare.com/articles/dataset/Experimental_study_of_machinability_of_CHSF_PR_composites_by_end_milling/29412142

许可证

CC-BY-4.0 (置信:verified_official)

发布年份

2025

发布方

Taylor & Francis

分发点