计量学报2024，Vol.45Issue(2)：246-252,7.DOI:10.3969/j.issn.1000-1158.2024.02.15
基于像素标记法的复合材料异型构件均匀性表征
Homogeneity Characterization of Composite Shaped Components Based on Pixel Marking Method
摘要
Abstract
The structural inhomogeneity caused by pore defects in fiber-reinforced ceramic matrix composites will seriously affect the macroscopic mechanical properties of the components,while the overall porosity cannot effectively characterize the homogeneity.Aiming at this problem,a spatial block division method based on pixel labeling is proposed to realize the automatic block division of CT scan volume data of special-shaped components.On the basis of calculating the porosity value of each block,the product of the mean porosity and the standard deviation is used as the index to quantitatively characterize the structural uniformity of the components.The 3D mapping of the porosity is carried out by the ray projection method,and the porosity distribution is visualized and characterized.The results show that the method can effectively quantitatively characterize the overall and local uniformity of the special-shaped component,and give the local component from a 3D perspective.The size and spatial position information of the porosity provide a strong basis for further optimizing the manufacturing process parameters and improving the reliability of component service.关键词
材料试验/复合材料/纤维增强陶瓷/孔隙缺陷/结构均匀性/三维映射/像素标记法Key words
material testing/composite materials/fiber reinforced ceramic/pore defects/structural uniformity/3D mapping/pixel marking method分类
通用工业技术引用本文复制引用
张玉燕,李启航,温银堂..基于像素标记法的复合材料异型构件均匀性表征[J].计量学报,2024,45(2):246-252,7.基金项目
河北省自然科学基金(F2021203024) （F2021203024）
河北省科技计划(216Z1704G,20312202D,20311001D) （216Z1704G,20312202D,20311001D）
