显微CT涡轮叶片重建质量优化方法  

Study on quality optimization of turbine blade reconstruction based on micro CT

作　　者：胡坦能 高鸿波[1] 崔凯歌 朱秀森 张士晶[1] 何溦 薛泉 黄秋艳 HU Tanneng;GAO Hongbo;CUI Kaige;ZHU Xiusen;ZHANG Shijing;HE Wei;XUE Quan;HUANG Qiuyan(Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,China;AECC Shenyang Engine Design Institute,Shenyang 110027,China;Guizhou Aviation Technical Development Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,江西南昌330063 [2]中国航发沈阳发动机研究所,辽宁沈阳110027 [3]贵州航宇科技发展股份有限公司,贵州贵阳550081

出　　处：《中国测试》2023年第12期41-46,53,共7页China Measurement & Test

基　　金：南昌航空大学研究生创新专项资金项目(YC2022-s742)。

摘　　要：针对航空发动机叶片厚度不均,内部结构复杂造成的CT检测重建质量差的问题,以某型内部含有裂纹的涡轮叶片为研究对象,设计不同的扫描参数,进行不同扫描参数下的CT扫描与重建,实现了叶片轮廓的三维可视化,讨论透照管电压和管电流、伪影抑制算法、投影图像数量、图像滤波对重建质量的影响,通过研究和评价涡轮叶片的成像质量,实现叶片轮廓的高质量三维成像,推动显微CT技术在叶片检测上的应用。In order to solve the problem of poor CT detection and reconstruction quality caused by uneven thickness of aero-engine blades and complex internal structure,a certain type of turbine blade with internal cracks was used as the research object.Different scanning parameters were designed and CT scans under different scanning parameters were conducted.With reconstruction,the three-dimensional visualization of the blade profile was realized.The effects of transillumination tube voltage and tube current,artifact suppression algorithm,number of projected images,and image filtering on the reconstruction quality were discussed.By studying and evaluating the imaging quality of turbine blades,the blade profile was realized High-quality threedimensional imaging promotes the application of micro-CT technology in blade inspection.

关 键 词：涡轮叶片 CT重建与扫描 三维可视化 裂纹提取 

分 类 号：TG115.28[金属学及工艺—物理冶金] TB9[金属学及工艺—金属学]