工艺与制造英文2025被引 8
基于结构光扫描和深度学习的自动铺纤层间缺陷检测
Lay‐up defects inspection for automated fiber placement with structural light scanning and deep learning
Chongrui Tang, Deyong Sun, Jianchao Zou, Yifeng Xiong, Guoxin Fang, Weizhao Zhang · Chinese University of Hong Kong
摘要整理
自动铺纤(AFP)是大尺寸碳纤维增强复合材料(CFRP)零件的先进制造技术。在AFP工艺中,单向CFRP预浸料带在加热和压力条件下由机械臂铺放在模具上形成层板。然而,对AFP过程中层间缺陷的高效监测,特别是包括褶皱、桥接、间隙和重叠等面外缺陷的检测,仍需更先进的解决方案,目前手工检测仍占实际制造过程的很大比例。为解决这一问题,本工作开发了一种实现AFP层间缺陷高效准确检测的创新方法。首先,构建了包含5自由度移动平台、气缸、压实滚筒、加热枪和结构光相机的定制AFP平台。其次,基于PointNet++(用于3D点云分割的卷积神经网络)创建了缺陷检测算法。PointNet++通过包含在AFP平台上故意铺放的缺陷3D点云数据集进行训练,这些点云由结构光相机捕获。与现有AFP缺陷检测方法(如激光轮廓仪和热成像)相比,该方法具有成本低、操作便捷的优势。实验验证表明,该方法能够在1秒内精确定位面外AFP缺陷位置。对面外缺陷的检测精度(交并比IoU)可达72%以上。该方法具有检测速度快、成本低、易于操作等优点,为AFP工艺质量控制提供了有效支撑。
相关论文
A review of recent developments in natural fibre composites and their mechanical performance
Composites Part A Applied Science and Manufacturing · 2015
Non-invasive electrical and magnetic stimulation of the brain, spinal cord, roots and peripheral nerves: Basic principles and procedures for routine clinical and research application. An updated report from an I.F.C.N. Committee
Clinical Neurophysiology · 2015
Lignocellulosic biomass: a sustainable platform for the production of bio-based chemicals and polymers
Polymer Chemistry · 2015
Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints
CIRP Annals · 2016
Nanoimprint Lithography: Methods and Material Requirements
Advanced Materials · 2007
Nanocomposites: synthesis, structure, properties and new application opportunities
Materials Research · 2009
← 返回论文库整理:复材站编辑部