现代制造工程 ›› 2025, Vol. 540 ›› Issue (9): 139-145.doi: 10.16731/j.cnki.1671-3133.2025.09.018

• 仪器仪表/检测/监控 • 上一篇    下一篇

基于STL模型的增材制造曲面金属构件超声C扫描检测

贺予, 吕铎, 胡宏伟, 刘芝平, 李紫媚   

  1. 长沙理工大学机械与运载工程学院,长沙 410114
  • 收稿日期:2025-03-21 出版日期:2025-09-18 发布日期:2025-09-23
  • 通讯作者: 吕铎,博士,讲师,硕士生导师,主要研究方向为超声无损检测。E-mail:lyuduo@csust.edu.cn。
  • 作者简介:贺予,本科,主要研究方向为增材制造材料超声检测。
  • 基金资助:
    国家级大学生创新训练计划项目(S202410536014);湖南省自然科学基金青年项目(2024JJ6048);湖南省科技创新计划项目(2024RC3172);长沙理工大学大学生创新创业训练计划项目

STL model-based ultrasonic C-scan detection of additively manufactured curved metal components

HE Yu, LÜ Duo, HU Hongwei, LIU Zhiping, LI Zimei   

  1. College of Mechanical and Vehicle Engineering,Changsha University of Science and Technology,Changsha 410114,China
  • Received:2025-03-21 Online:2025-09-18 Published:2025-09-23

摘要: 增材制造金属构件在高端装备领域有着重要的应用,但其制造过程易产生气孔、裂纹等缺陷,且增材制造构件表面多为复杂曲面,传统超声C扫描方法难以实现缺陷的稳定检出。提出了一种基于立体光刻(STereoLithography,STL)模型的增材制造曲面金属构件超声C扫描检测方法,从增材制造构件的STL模型数据中提取出超声扫描所需的工件表面测点法矢参数,采用等弧长离散方法确定扫描点坐标,实现超声探头寻位。采用激光烧结增材制造工艺制备航空叶片型面钛合金试块,利用多自由度超声扫描系统开展C扫描实验。实验结果表明,STL模型驱动的超声C扫描方法有效检测出了多种亚毫米级尺寸的典型增材制造缺陷,然而基于超声C扫描图像的缺陷尺寸定量结果存在一定偏差。

关键词: 增材制造, STL模型, 曲面构件, 超声C扫描

Abstract: Additively manufactured metal components have important applications in the field of high-end equipment,but their manufacturing process is prone to porosity,cracks and other defects. The conventional ultrasonic C-scan method is difficult to stably detect defects due to the complex curved surfaces of additively manufactured components.An ultrasonic C-scan detection method for additively manufactured curved metal components based on the STereoLithography (STL) model was proposed. The normal vector parameters of the detection points on the workpiece surface required by ultrasonic scanning were extracted from the STL model of the additively manufactured components,and the scanning point coordinates were determined by the equal-arc length discrete method to realize the position finding of ultrasonic probes. A laser sintering additive manufacturing process was used to manufacture the titanium alloy test block with the aero blade profile,and C-scan experiments were conducted using a multi degree of freedom ultrasonic scanning system. The experimental results show that the STL model driven ultrasonic C-scan method effectively detects several typical additive manufacturing defects with sub millimeter sizes. However,there are deviations in the quantitative results of defect size based on C-scan images.

Key words: additive manufacturing, STL model, curved components, ultrasonic C-scan

中图分类号: 

版权所有 © 《现代制造工程》编辑部 
地址:北京市东城区东四块玉南街28号 邮编:100061 电话:010-67126028 电子信箱:2645173083@qq.com
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn