Development of a non-contact and non-destructive laser speckle imaging system for remote sensing of anisotropic deformation around fastener holes

Yong Pang; Bernard K. Chen; Wencheng Liu; Siu Fung Yu; Siva N. Lingamanaik

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Development of a non-contact and non-destructive laser speckle imaging system for remote sensing of anisotropic deformation around fastener holes

机译：开发用于遥感紧固件孔周围各向异性变形的非接触式非破坏性激光散斑成像系统

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摘要

Strain sensing around the fastener holes is fundamentally significant in structural health monitoring and failure detections. Conventional non-destructive testing (NDT) techniques typically have limitations in performing reliable and efficient inspections. Here, a laser speckle imaging system (LSIS) has been developed to achieve non-contact, non-destructive and remote strain sensing. Methods for determining optimal laser speckle patterns have been investigated to achieve remote sensing of strain up to a working distance of 5 m. This LSIS was applied to study the anisotropic properties of un-notched and circular notched specimens in cold-rolled aluminium sheet, an important material for the construction of lightweight aircraft structures. The results showed that strain distributions determined by LSIS are consistent with finite element (FE) predictions in which the evolution of strain concentrations not only depends on the notch size but also on material anisotropy. This study demonstrates the potential application of LSIS as an effective NDT technique for full-field, non-contact and remote sensing of anisotropic deformation around fastener holes.

机译：紧固件孔周围的应变传感在结构健康状况监测和故障检测中至关重要。常规的非破坏性测试（NDT）技术通常在执行可靠和有效的检查方面有局限性。在此，已经开发了激光散斑成像系统（LSIS）以实现非接触，非破坏性和远程应变感测。已经研究了确定最佳激光散斑图案的方法，以实现对5 m以下工作距离的应变进行遥感。该LSIS用于研究冷轧铝板中无缺口和圆形缺口试样的各向异性，冷轧铝板材是构造轻型飞机结构的重要材料。结果表明，由LSIS确定的应变分布与有限元（FE）预测一致，在有限元预测中，应变浓度的变化不仅取决于缺口的大小，还取决于材料的各向异性。这项研究证明了LSIS作为一种有效的NDT技术在紧固件孔周围各向异性变形的全场，非接触和遥感方面的潜在应用。

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《NDT & E international》 |2020年第4期|102219.1-102219.14|共14页
作者
Yong Pang; Bernard K. Chen; Wencheng Liu; Siu Fung Yu; Siva N. Lingamanaik;
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作者单位

Department of Mechanical and Aerospace Engineering Monash University Melbourne 3800 Australia;

School of Mechanical Engineering University of Shanghai for Science and Technology Shanghai 200093 China;

Department of Applied Physics Hong Kong Polytechnic University Hong Kong China;

Institute of Railway Technology Monash University Melbourne 3800 Australia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Laser speckle imaging; Non-destructive testing; Remote strain sensing; Digital image correlation;

机译：激光散斑成像;非破坏性测试;远程应变感应;数字图像关联;

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1. Development of a non-contact and non-destructive laser speckle imaging system for remote sensing of anisotropic deformation around fastener holes [J] . NDT & E International: Independent Nondestructive Testing and Evaluation . 2020,第期

机译：开发非接触和非破坏性激光散斑成像系统，用于遥感紧固件孔周边各向异性变形
2. Measurement of deformation of the concrete sleepers under different support conditions using non-contact laser speckle imaging sensor [J] . Pang Yong, Lingamanaik Siva N., Chen Bernard K., Engineering Structures . 2020,第Feba15期

机译：使用非接触式激光散斑成像传感器测量不同支撑条件下混凝土轨枕的变形
3. Development of Non-Destructive Inspection Method of Defective Concrete Element by Laser Remote Sensing System [J] . Norikazu MISAKI, Yoshinori SHIMADA, Masahiro SHINODA Japanese railway engineering . 2010,第1期

机译：激光遥感系统对缺陷混凝土构件无损检测方法的开发
4. The Effects of Support Condition on Concrete Crosstie's Deformation using Non-Contact Laser Speckle Imaging Sensor [C] . Y. Pang, B. K. Chen, S. N. Lingamanaik, International Conference on the Mechanical Behaviour of Materials . 2019

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Development of a non-contact and non-destructive laser speckle imaging system for remote sensing of anisotropic deformation around fastener holes

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