各向异性增材制造构件的超声阵列全聚焦成像

徐娜; 许路路; 何方成

doi:10.13700/j.bh.1001-5965.2021.0404

各向异性增材制造构件的超声阵列全聚焦成像

doi: 10.13700/j.bh.1001-5965.2021.0404

徐娜^{1, 2, 3, ,},
许路路^{1, 4},
何方成^{1, 2, 3}

1.
中国航发北京航空材料研究院，北京 100095
2.
中国航空发动机集团材料检测与评价重点实验室，北京 100095
3.
航空材料检测与评价北京市重点实验室，北京 100095
4.
北京航空航天大学材料科学与工程学院，北京 100191

基金项目: 国家自然科学基金(51505449,52075049)

详细信息

通讯作者:
E-mail：bjxuna@163.com

中图分类号: TB553
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- 被引次数: 0
出版历程
- 收稿日期: 2021-07-19
- 录用日期: 2021-10-11
- 网络出版日期: 2021-11-30
- 整期出版日期: 2023-05-31

Total focusing imaging in anisotropic additive manufacturing components using ultrasonic array

XU Na^{1, 2, 3
, ,},
XU Lulu^{1, 4},
HE Fangcheng^{1, 2, 3}

1.
AECC Beijing Institute of Aeronautical Materials，Beijing 100095，China
2.
Key Laboratory of Aeronautical Materials and Evaluation Aero Engine Corporation of China， Beijing 100095， China
3.
Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation， Beijing 100095， China
4.
School of Materials Science and Engibeering，Beihang University，Beijing 100191，China

Funds: National Natural Science Foundation of China (51505449,52075049)

More Information

Corresponding author: E-mail：bjxuna@163.com

摘要

摘要:
针对激光增材制造构件的各向异性特征，开展超声波传播特性研究，并基于群速度测量结果对常规超声阵列全聚焦成像算法进行优化。采用CIVA超声仿真软件对含有横通孔和平底孔缺陷的试样开展全聚焦仿真研究，结果表明，材料的各向异性对超声阵列全聚焦检测的成像质量、缺陷定位精度和缺陷分布范围均具有明显影响；开展全聚焦成像检测实验，结果表明，优化后的全聚焦成像算法能够实现激光增材制造钛合金试样中直径0.8 mm平底孔缺陷的准确检测，成像阵列性能指标（API）值减小至0.43，缺陷定位误差缩小至0.54 mm，检测能力和定位精度显著提高。
- 激光增材制造 /
- 各向异性 /
- 超声阵列 /
- 全聚焦 /
- CIVA仿真
Abstract:
To solve the anisotropic problem of laser additive manufacturing components, the propagation characteristics of ultrasonic wave in the anisotropic material have been researched and the total focusing method using an ultrasonic array has been optimized based on group velocity of anisotropic material. Then, the CIVA software was used to carry out a simulation study on total focusing imaging of samples with horizontal through holes and flat-bottom holes. Next, a simulated investigation of complete focusing imaging of samples with horizontal through holes and flat-bottomed holes was conducted using the CIVA program. The simulation results show that the anisotropy of material has a significant impact on the imaging quality, defect location accuracy and defect distribution range of total focusing imaging using an ultrasonic array. The inspection experiments using the conventional and optimized total focusing imaging method were carried out. The findings demonstrate that the flat-bottomed holes with a diameter of 0.8 mm in the titanium alloy specimen produced by laser additive manufacturing can be detected with accuracy, and that the array performance indicator (API) value is decreased to 0.43 and the defect positioning error is decreased to 0.54 mm. Both the detection capability and defect location accuracy are improved significantly.
- laser additive manufacturing /
- anisotropy /
- ultrasonic array /
- total focusing /
- CIVA simulation

HTML全文

图 1 激光增材制造金属材料中声速计算示意图

Figure 1. Schematic of wave velocity calculation in laser additive manufacturing materials

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图 2 激光增材制造金属材料中准纵波声速变化曲线

Figure 2. Velocity curves of quasi-longitudinal wave in laser additive manufacturing materials

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图 3 全聚焦成像算法原理图

Figure 3. Schematic of total focus imaging algorithm

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图 4 横通孔缺陷CIVA仿真模型

Figure 4. CIVA simulation model of horizontal through holes

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图 5 横通孔缺陷的常规全聚焦成像算法结果

Figure 5. Imaging results of horizontal through holes using conventional total focusing algorithm

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图 6 横通孔缺陷优化后的全聚焦成像算法结果

Figure 6. Imaging results of horizontal through holes using optimized total focusing algorithm

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图 7 横通孔缺陷优化前后的定位误差

Figure 7. Positioning error before and after optimization for horizontal through holes

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图 8 横通孔缺陷优化前后的成像API值

Figure 8. API value before and after optimization for horizontal through holes

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图 9 平底孔的CIVA仿真模型

Figure 9. CIVA simulation model of flat-bottom hole

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图 10 平底孔位置的局部图

Figure 10. Partial image of the flat-bottomed hole

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图 11 根据实验全矩阵数据拟合的声速曲线

Figure 11. Fitted velocity curves based on experimental FMC data

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图 12 X-Y面常规全聚焦成像算法的实验结果

Figure 12. Experimental results of X-Y surface using conventional total focusing imaging algorithm

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图 13 X-Y面优化的全聚焦成像算法的实验结果

Figure 13. Experimental results of X-Y surface using optimized total focusing imaging algorithm

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表 1 平底孔缺陷优化前后成像结果

Table 1. Imaging results before and after optimization for flat-bottom holes

算法定位误差值/mm API值

常规全聚焦成像 0.8 1.63
优化后的全聚焦成像 0.14 1.66

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