中国机械工程 ›› 2026, Vol. 37 ›› Issue (7): 1624-1634.DOI: 10.3969/j.issn.1004-132X.2026.07.011
• 机械基础工程 • 上一篇
唐昆1(
), 彭海滨1, 朱勇建2(
), 张航1, 曾钢3, 肖宏超4, 周小杰1, 唐伟东1, 张明军1, 毛聪1
收稿日期:2024-10-12
修回日期:2026-02-03
出版日期:2026-07-25
发布日期:2026-08-18
通讯作者:
朱勇建
作者简介:唐昆,男,1980年生,副教授、硕士研究生导师。研究方向为精密/超精密加工技术、机器视觉与深度学习。发表论文20余篇。E-mail: tangkun@csust.edu.cn基金资助:
TANG Kun1(
), PENG Haibin1, ZHU Yongjian2(
), ZHANG Hang1, ZENG Gang3, XIAO Hongchao4, ZHOU Xiaojie1, TANG Weidong1, ZHANG Mingjun1, MAO Cong1
Received:2024-10-12
Revised:2026-02-03
Online:2026-07-25
Published:2026-08-18
Contact:
ZHU Yongjian
摘要:
针对镁合金激光焊缝表面缺陷形态复杂、特征不明显,以及漏检与误检率高等问题,提出了基于改进重建网络的无监督缺陷检测方法。通过ASPP、CBAM、SSPCAB模块的引入,以及多尺度特征融合模块MSFFM的添加,提高了网络特征提取与异常目标定位的能力,增强了缺陷位置的重建精度与相邻网络层间的特征信息融合,并在自建与公共数据集上进行了验证。所提方法可对镁合金焊缝表面的小样本复杂形态缺陷进行有效识别、精准分割与定位,且具备良好的通用性。
中图分类号:
唐昆, 彭海滨, 朱勇建, 张航, 曾钢, 肖宏超, 周小杰, 唐伟东, 张明军, 毛聪. 基于改进重建网络的镁合金激光焊缝缺陷检测[J]. 中国机械工程, 2026, 37(7): 1624-1634.
TANG Kun, PENG Haibin, ZHU Yongjian, ZHANG Hang, ZENG Gang, XIAO Hongchao, ZHOU Xiaojie, TANG Weidong, ZHANG Mingjun, MAO Cong. Defects Detection for Laser Welding Seams of Magnesium Alloy Based on Improved Reconstruction Network[J]. China Mechanical Engineering, 2026, 37(7): 1624-1634.
| 参数 | 数值 |
|---|---|
| 中心光束平均激光功率PA/W | 1000 |
| 中心光束调制频率/Hz | 200,400,600,800,1000 |
| 中心光束调制振幅/W | 100,300,500,700,900 |
| 环光束激光功率/W | 1000 |
| 焊接速度/(mm·s-1) | 30 |
| 离焦量/mm | 0 |
| 上表面保护气体流量/(l·min-1) | 20 |
| 背保护气体流量/(l·min-1) | 15 |
表1 焊接工艺参数
Tab.1 Welding parameters
| 参数 | 数值 |
|---|---|
| 中心光束平均激光功率PA/W | 1000 |
| 中心光束调制频率/Hz | 200,400,600,800,1000 |
| 中心光束调制振幅/W | 100,300,500,700,900 |
| 环光束激光功率/W | 1000 |
| 焊接速度/(mm·s-1) | 30 |
| 离焦量/mm | 0 |
| 上表面保护气体流量/(l·min-1) | 20 |
| 背保护气体流量/(l·min-1) | 15 |
| 网络层 | 轻量化操作 | 输入图像尺寸 |
|---|---|---|
| 1 | 3→1 | 1×H×W |
| 2 | 128→64 | 64×H/2×W/2 |
| 3 | 256→128 | 128×H/4×W/4 |
| 4 | 512→256 | 256×H/8×W/8 |
| 5 | 1024→512 | 512×H/16×W/16 |
表2 重建网络轻量化
Tab.2 Lightweight operation for reconstruction network
| 网络层 | 轻量化操作 | 输入图像尺寸 |
|---|---|---|
| 1 | 3→1 | 1×H×W |
| 2 | 128→64 | 64×H/2×W/2 |
| 3 | 256→128 | 128×H/4×W/4 |
| 4 | 512→256 | 256×H/8×W/8 |
| 5 | 1024→512 | 512×H/16×W/16 |
| 镁合金数据集 | Mvtec AD数据集 | |
|---|---|---|
| 学习率 | 0.0001 | 0.001 |
| 批大小 | 2 | 8 |
| 学习率调整(衰减率) | 0.2 | |
| 迭代次数 | 800 | |
| 优化器 | Adam | |
| 损失函数 | MSE+SSIM | |
图像大小 (通道数×长×宽) | 1×256×256 | |
| 激活函数 | ReLu | |
表3 重建网络参数设置
Tab.3 Parameter setting of reconstruction network
| 镁合金数据集 | Mvtec AD数据集 | |
|---|---|---|
| 学习率 | 0.0001 | 0.001 |
| 批大小 | 2 | 8 |
| 学习率调整(衰减率) | 0.2 | |
| 迭代次数 | 800 | |
| 优化器 | Adam | |
| 损失函数 | MSE+SSIM | |
图像大小 (通道数×长×宽) | 1×256×256 | |
| 激活函数 | ReLu | |
| 真实标签 | 预测结果 | |
|---|---|---|
| 有缺陷 | 无缺陷 | |
| 有缺陷 | 真阳性 | 假阴性 |
| 无缺陷 | 假阳性 | 真阴性 |
表4 检测结果
Tab.4 Test results
| 真实标签 | 预测结果 | |
|---|---|---|
| 有缺陷 | 无缺陷 | |
| 有缺陷 | 真阳性 | 假阴性 |
| 无缺陷 | 假阳性 | 真阴性 |
| 方法 | 模型 | DET-AUROC | SEG-AUROC | RPRO |
|---|---|---|---|---|
| 基于特征方法 | CFA | 81.1 | 88.4 | 74.2 |
| Simple-Net | 80.5 | 86.7 | 55.1 | |
| DFC | 67.6 | 89.1 | 51.6 | |
| DeSTSeg | 60.7 | 78.8 | 54.9 | |
| Ms-Flow | 75.3 | 89.9 | 65.4 | |
| 基于重建方法 | AE-MSE | 41.0 | 53.0 | 9.0 |
| AE-SSIM | 43.0 | 74.0 | 24.0 | |
| DRAEM | 62.7 | 83.1 | 40.9 | |
| FAIR | 86.0 | 79.6 | 40.2 | |
| 本文方法 | 94.9 | 84.5 | 58.1 |
表5 缺陷分类实验结果(镁合金激光焊接数据集) (%)
Tab.5 Experiment results of defect classification (magnesium alloy laser welding dataset)
| 方法 | 模型 | DET-AUROC | SEG-AUROC | RPRO |
|---|---|---|---|---|
| 基于特征方法 | CFA | 81.1 | 88.4 | 74.2 |
| Simple-Net | 80.5 | 86.7 | 55.1 | |
| DFC | 67.6 | 89.1 | 51.6 | |
| DeSTSeg | 60.7 | 78.8 | 54.9 | |
| Ms-Flow | 75.3 | 89.9 | 65.4 | |
| 基于重建方法 | AE-MSE | 41.0 | 53.0 | 9.0 |
| AE-SSIM | 43.0 | 74.0 | 24.0 | |
| DRAEM | 62.7 | 83.1 | 40.9 | |
| FAIR | 86.0 | 79.6 | 40.2 | |
| 本文方法 | 94.9 | 84.5 | 58.1 |
| DET-AUROC | SEG-AUROC | RPRO | |
|---|---|---|---|
| 飞溅 | 97.0 | 96.2 | 82.1 |
| 焊瘤 | 92.2 | 84.9 | 61.8 |
| 塌陷 | 98.7 | 93.0 | 77.6 |
| 咬边 | 91.7 | 85.5 | 58.3 |
表6 单类别缺陷识别检测结果(本文方法) (%)
Tab.6 Experiment results of single category (proposed method)
| DET-AUROC | SEG-AUROC | RPRO | |
|---|---|---|---|
| 飞溅 | 97.0 | 96.2 | 82.1 |
| 焊瘤 | 92.2 | 84.9 | 61.8 |
| 塌陷 | 98.7 | 93.0 | 77.6 |
| 咬边 | 91.7 | 85.5 | 58.3 |
| 类别 | DET-AUROC | SEG-AUROC | RPRO | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CFA | Simple-Net | FAIR | 本文方法 | CFA | Simple-Net | FAIR | 本文方法 | CFA | Simple-Net | FAIR | 本文方法 | ||
| 纹理类 | 地毯 | 97.6 | 99.6 | 100 | 98.0 | 98.7 | 98.6 | 99.4 | 99.1 | 94.9 | 94.5 | 97.6 | 95.6 |
| 网格 | 97.9 | 99.7 | 98.3 | 96.6 | 98.4 | 98.1 | 98.8 | 99.0 | 94.6 | 92.4 | 95.6 | 96.2 | |
| 皮革 | 98.9 | 100 | 99.7 | 99.3 | 98.7 | 99.0 | 99.6 | 99.6 | 95.6 | 96.2 | 98.8 | 98.8 | |
| 瓷砖 | 97.8 | 100 | 100 | 100 | 98.1 | 97.0 | 98.3 | 98.4 | 93.6 | 92.0 | 95.1 | 95.0 | |
| 木材 | 98.0 | 100 | 98.3 | 93.0 | 97.9 | 92.0 | 94.9 | 90.3 | 93.4 | 76.7 | 90.3 | 79.4 | |
| 均值 | 98.0 | 99.7 | 99.3 | 97.4 | 98.4 | 97.0 | 98.2 | 97.3 | 94.4 | 90.4 | 95.5 | 93.0 | |
| 对象类 | 瓶口 | 100 | 100 | 99.2 | 99.7 | 98.5 | 98.2 | 98.1 | 98.3 | 95.2 | 93.2 | 93.6 | 94.3 |
| 电缆 | 99.8 | 98.7 | 97.9 | 93.4 | 98.6 | 97.7 | 96.6 | 95.9 | 94.7 | 89.8 | 87.8 | 83.4 | |
| 胶囊 | 99.0 | 99.6 | 88.5 | 92.8 | 98.7 | 99.1 | 88.8 | 93.5 | 94.9 | 93.3 | 76.4 | 79.6 | |
| 榛子 | 98.6 | 100 | 99.6 | 99.4 | 98.5 | 98.5 | 99.1 | 99.4 | 95.0 | 88.7 | 96.1 | 95.4 | |
| 齿轮 | 99.1 | 100 | 91.1 | 92.9 | 98.6 | 98.7 | 93.2 | 96.7 | 95.2 | 89.4 | 74.2 | 87.7 | |
| 药片 | 98.9 | 97.8 | 96.1 | 97.6 | 98.6 | 98.5 | 98.4 | 98.8 | 95.5 | 92.9 | 94.9 | 95.6 | |
| 螺钉 | 97.5 | 93.1 | 82.4 | 94.9 | 98.5 | 98.7 | 98.3 | 98.5 | 94.9 | 93.2 | 92.1 | 89.0 | |
| 牙刷 | 97.8 | 96.1 | 83.9 | 92.5 | 98.2 | 96.9 | 95.8 | 98.9 | 93.5 | 84.6 | 80.4 | 93.6 | |
| 晶体管 | 97.9 | 100 | 99.3 | 97.8 | 98.2 | 96.3 | 93.5 | 91.1 | 93.6 | 88.1 | 97.3 | 83.5 | |
| 拉链 | 98.1 | 99.9 | 97.8 | 99.4 | 98.0 | 98.5 | 98.8 | 99.1 | 93.6 | 94.9 | 96.1 | 97.1 | |
| 均值 | 98.7 | 98.5 | 91.6 | 94.8 | 98.4 | 98.1 | 96.1 | 94.8 | 94.6 | 90.8 | 87.9 | 90.0 | |
表7 缺陷分类实验结果(MVTec AD公共数据集) (%)
Tab.7 Experiment results of defect classification (MVTec AD public dataset)
| 类别 | DET-AUROC | SEG-AUROC | RPRO | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CFA | Simple-Net | FAIR | 本文方法 | CFA | Simple-Net | FAIR | 本文方法 | CFA | Simple-Net | FAIR | 本文方法 | ||
| 纹理类 | 地毯 | 97.6 | 99.6 | 100 | 98.0 | 98.7 | 98.6 | 99.4 | 99.1 | 94.9 | 94.5 | 97.6 | 95.6 |
| 网格 | 97.9 | 99.7 | 98.3 | 96.6 | 98.4 | 98.1 | 98.8 | 99.0 | 94.6 | 92.4 | 95.6 | 96.2 | |
| 皮革 | 98.9 | 100 | 99.7 | 99.3 | 98.7 | 99.0 | 99.6 | 99.6 | 95.6 | 96.2 | 98.8 | 98.8 | |
| 瓷砖 | 97.8 | 100 | 100 | 100 | 98.1 | 97.0 | 98.3 | 98.4 | 93.6 | 92.0 | 95.1 | 95.0 | |
| 木材 | 98.0 | 100 | 98.3 | 93.0 | 97.9 | 92.0 | 94.9 | 90.3 | 93.4 | 76.7 | 90.3 | 79.4 | |
| 均值 | 98.0 | 99.7 | 99.3 | 97.4 | 98.4 | 97.0 | 98.2 | 97.3 | 94.4 | 90.4 | 95.5 | 93.0 | |
| 对象类 | 瓶口 | 100 | 100 | 99.2 | 99.7 | 98.5 | 98.2 | 98.1 | 98.3 | 95.2 | 93.2 | 93.6 | 94.3 |
| 电缆 | 99.8 | 98.7 | 97.9 | 93.4 | 98.6 | 97.7 | 96.6 | 95.9 | 94.7 | 89.8 | 87.8 | 83.4 | |
| 胶囊 | 99.0 | 99.6 | 88.5 | 92.8 | 98.7 | 99.1 | 88.8 | 93.5 | 94.9 | 93.3 | 76.4 | 79.6 | |
| 榛子 | 98.6 | 100 | 99.6 | 99.4 | 98.5 | 98.5 | 99.1 | 99.4 | 95.0 | 88.7 | 96.1 | 95.4 | |
| 齿轮 | 99.1 | 100 | 91.1 | 92.9 | 98.6 | 98.7 | 93.2 | 96.7 | 95.2 | 89.4 | 74.2 | 87.7 | |
| 药片 | 98.9 | 97.8 | 96.1 | 97.6 | 98.6 | 98.5 | 98.4 | 98.8 | 95.5 | 92.9 | 94.9 | 95.6 | |
| 螺钉 | 97.5 | 93.1 | 82.4 | 94.9 | 98.5 | 98.7 | 98.3 | 98.5 | 94.9 | 93.2 | 92.1 | 89.0 | |
| 牙刷 | 97.8 | 96.1 | 83.9 | 92.5 | 98.2 | 96.9 | 95.8 | 98.9 | 93.5 | 84.6 | 80.4 | 93.6 | |
| 晶体管 | 97.9 | 100 | 99.3 | 97.8 | 98.2 | 96.3 | 93.5 | 91.1 | 93.6 | 88.1 | 97.3 | 83.5 | |
| 拉链 | 98.1 | 99.9 | 97.8 | 99.4 | 98.0 | 98.5 | 98.8 | 99.1 | 93.6 | 94.9 | 96.1 | 97.1 | |
| 均值 | 98.7 | 98.5 | 91.6 | 94.8 | 98.4 | 98.1 | 96.1 | 94.8 | 94.6 | 90.8 | 87.9 | 90.0 | |
| ASPP | SSPCAB | CBAM | MSFFM | DET-AUROC | SEG-AUROC | RPRO |
|---|---|---|---|---|---|---|
| 100 | 51.8 | 39.5 | ||||
| √ | 100 | 53.5 | 43.3 | |||
| √ | √ | 98.6 | 60.0 | 42.2 | ||
| √ | √ | √ | 95.4 | 78.8 | 48.6 | |
| √ | √ | √ | √ | 94.9 | 84.5 | 58.1 |
表8 各模块消融实验结果 (%)
Tab.8 Results of ablation experiments for each module
| ASPP | SSPCAB | CBAM | MSFFM | DET-AUROC | SEG-AUROC | RPRO |
|---|---|---|---|---|---|---|
| 100 | 51.8 | 39.5 | ||||
| √ | 100 | 53.5 | 43.3 | |||
| √ | √ | 98.6 | 60.0 | 42.2 | ||
| √ | √ | √ | 95.4 | 78.8 | 48.6 | |
| √ | √ | √ | √ | 94.9 | 84.5 | 58.1 |
| SimAM | ECA | ELA | CBAM | DET-AUROC | SEG-AUROC | RPRO |
|---|---|---|---|---|---|---|
| √ | 83.6 | 81.5 | 52.6 | |||
| √ | 69.2 | 70.5 | 45.4 | |||
| √ | 91.5 | 63.5 | 35.8 | |||
| √ | 94.9 | 84.5 | 58.1 |
表9 注意力机制消融实验结果 (%)
Tab.9 Experimental results of attention mechanism ablation
| SimAM | ECA | ELA | CBAM | DET-AUROC | SEG-AUROC | RPRO |
|---|---|---|---|---|---|---|
| √ | 83.6 | 81.5 | 52.6 | |||
| √ | 69.2 | 70.5 | 45.4 | |||
| √ | 91.5 | 63.5 | 35.8 | |||
| √ | 94.9 | 84.5 | 58.1 |
| FAIR | DRAEM | 本文 方法 | CFA | Simple-Net | |
|---|---|---|---|---|---|
| 损失 | 0.004 | 0.249 | 0.126 | 0.256 | 0.027 |
| 参数量/106 | 69.0 | 98.2 | 23.3 | 11.2 | 68.9 |
| 浮点计算量/109 | 159.9 | 198.2 | 69.3 | 1.8 | 11.4 |
| 训练时长/s | 2895 | 4063 | 2684 | 646 | 1541 |
| 推理时长/s | 7 | 9 | 6 |
表10 轻量化实验结果
Tab.10 Lightweight experimental results
| FAIR | DRAEM | 本文 方法 | CFA | Simple-Net | |
|---|---|---|---|---|---|
| 损失 | 0.004 | 0.249 | 0.126 | 0.256 | 0.027 |
| 参数量/106 | 69.0 | 98.2 | 23.3 | 11.2 | 68.9 |
| 浮点计算量/109 | 159.9 | 198.2 | 69.3 | 1.8 | 11.4 |
| 训练时长/s | 2895 | 4063 | 2684 | 646 | 1541 |
| 推理时长/s | 7 | 9 | 6 |
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