光学精密工程2025，Vol.33Issue(17)：2765-2777,13.DOI:10.37188/OPE.20253317.2765
工业CT系统中双向温控原位加载装置与复合材料热-力耦合行为分析
Bidirectional temperature-controlled in-situ loading device for industrial CT systems and analysis of thermo-mechanical coupling behavior in composite materials
摘要
Abstract
Conventional industrial CT in situ loading devices suffer from thermal instability,control hyster-esis,and thermal gradient artifacts at extreme temperatures,impairing observation of thermomechanical coupling in composite materials.To address these limitations,a purpose built bidirectional temperature controlled in situ loading apparatus for industrial CT systems was developed and implemented.The appa-ratus enables non destructive characterization of the dynamic microstructural evolution of composite speci-mens within a controlled temperature range of-20 ℃ to 150 ℃ by optimizing the fixture geometry,incor-porating a symmetric upper and lower bidirectional temperature control module,and integrating a highly adaptable in situ tensile control system.The device was evaluated through in situ tensile tests on carbon fi-ber reinforced polymer(CFRP)plate specimens across multiple temperatures.Coupled with industrial CT three dimensional reconstruction,the mesoscale damage evolution of CFRP was captured in real time.Results demonstrate that,throughout the-20 ℃ to 150 ℃ range,incremental tensile displacement can be continuously recorded by industrial CT from micro damage initiation through to macroscopic failure.At elevated temperatures,matrix softening,pronounced interface debonding,and thermal expansion mis-match were observed,resulting in reduced mechanical performance.At low temperatures,resin embrittle-ment,microcrack initiation,and interface stress concentration were evident,leading to performance degra-dation.These findings confirm the apparatus provides reliable temperature control and loading stability across the tested range.The developed device offers a robust technical platform for elucidating damage mechanisms and structural evolution of composite materials under extreme thermal conditions and estab-lishes an experimental foundation for their engineering applications in aerospace,transportation,and relat-ed fields.关键词
工业CT/原位拉伸加载装置/双向温控/碳纤维增强聚合物/内部损伤演化Key words
industrial CT/in-situ tensile loading device/bidirectional temperature control/carbon fiber reinforced polymer/internal damage evolution分类
计算机与自动化引用本文复制引用
肖清俊,任峰,张月锋..工业CT系统中双向温控原位加载装置与复合材料热-力耦合行为分析[J].光学精密工程,2025,33(17):2765-2777,13.基金项目
吉林省科技厅中青年科技创新创业卓越人才(团队)资助项目(No.20220508145RC) （团队）
吉林省省级产业创新专项基金资助项目(No.2018C051-4) （No.2018C051-4）
