Simultaneous in-plane and out-of-plane displacement measurement based on a dual-camera imaging system and its application to inspection of large-scale space structures

Shien Ri; Hiroshi Tsuda; Takeshi Yoshida; Takashi Umebayashi; Akiyoshi Sato; Eiichi Sato

doi:10.1117/12.2190297

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17 July 2015 Simultaneous in-plane and out-of-plane displacement measurement based on a dual-camera imaging system and its application to inspection of large-scale space structures

Shien Ri, Hiroshi Tsuda, Takeshi Yoshida, Takashi Umebayashi, Akiyoshi Sato, Eiichi Sato

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Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95242N (2015) https://doi.org/10.1117/12.2190297
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore

Abstract

Optical methods providing full-field deformation data have potentially enormous interest for mechanical engineers. In this study, an in-plane and out-of-plane displacement measurement method based on a dual-camera imaging system is proposed. The in-plane and out-of-plane displacements are determined simultaneously using two measured in-plane displacement data observed from two digital cameras at different view angles. The fundamental measurement principle and experimental results of accuracy confirmation are presented. In addition, we applied this method to the displacement measurement in a static loading and bending test of a solid rocket motor case (CFRP material; 2.2 m diameter and 2.3 m long) for an up-to-date Epsilon rocket developed by JAXA. The effectiveness and measurement accuracy is confirmed by comparing with conventional displacement sensor. This method could be useful to diagnose the reliability of large-scale space structures in the rocket development.

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Shien Ri, Hiroshi Tsuda, Takeshi Yoshida, Takashi Umebayashi, Akiyoshi Sato, and Eiichi Sato "Simultaneous in-plane and out-of-plane displacement measurement based on a dual-camera imaging system and its application to inspection of large-scale space structures", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95242N (17 July 2015); https://doi.org/10.1117/12.2190297

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