Synchronous Measurement of Out-of-Plane Displacement and Slopes by Triple-Optical-Path Digital Speckle Pattern Interferometry

• Autorzy: Gu G.-Q. , Xu G.-Z. , Xu B.

Identyfikatory

DOI

10.24425/118159

• Języki publikacji: EN

Abstrakty

EN

This study proposes a triple-optical-path digital speckle pattern interferometry (DSPI) setup for measuring the full-field out-of-plane displacement and two orthogonal slopes simultaneously as well as independently. The designed setup contains one conventional out-of-plane speckle interferometer and two orthogonal modified shearographic interferometers with dual-observation geometry. In the setup, one laser device is used as the coherent source, and three monochrome cameras placed along a single line are used as the image acquisition device. Three correlation fringe patterns, one out-of-plane displacement fringe pattern and two slope fringe patterns, are captured synchronously by three cameras, and then are analysed using the phase-shifting technique to extract the phase distributions. The examinations of a practical non-contact measurement and a non-destructive testing (NDT) application by using the proposed setup are carried out in this study.

Słowa kluczowe

EN

simultaneous displacement and slopes measurement; non-destructive testing; digital speckle pattern interferometry; shearography; triple-optical-path

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2018
• Tom: Vol. 25, nr 1
• Strony: 3--14
• Opis fizyczny: Bibliogr. 25 poz., rys., wykr., wzory

Twórcy

autor

Gu G.-Q.

• Yancheng Institute of Technology, School of Civil Engineering, Yancheng, 224051, China

autor

Xu G.-Z.

• Yancheng Institute of Technology, School of Civil Engineering, Yancheng, 224051, China

autor

Xu B.

• Yancheng Institute of Technology, School of Civil Engineering, Yancheng, 224051, China

Bibliografia

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Uwagi

EN

This work was supported by the National Natural Science Foundation of China (Grant No. 51408524), and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20160437).

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).