Distributed optical sensing for monitoring strain evolution during mechanical testing of composite laminates

Tsai, Jung-Ting; Dustin, Joshua S.; Månsson, Jan-Anders

doi:10.1016/j.polymertesting.2021.107076

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…Distributed optical fiber sensing technology has been widely applied in various engineering measurement fields [20][21]. As a contact type signal measurement method, it is different from traditional point type electrical signal measurement.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Monitoring of Strain Processes With Large-Range and High-Spatial Resolution Using the Method of Weak Reflection FBG Measurement Based on OFDR

Chen,

Li,

Yang

et al. 2024

IEEE Trans. Instrum. Meas.

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The real-time monitoring of strain processes that can simultaneously realize a wide range and high spatial resolution has always been a huge challenge and cannot be satisfied by traditional electrical and non-contact measurement methods. In this article, the OFDR collocated with weak reflection FBG sensor (WRFBGs) was proposed to actively carry out multiple experiments on the non-standard reinforcement samples with complex strain processes in order to overcome this challenge. According to the result analysis, the complex strain variation law of the surface of the sample and the large span strain of adjacent locations during the whole process of tensile can be obtained by this method. The yield point (YP) can be accurately captured and positioned with mm-level horizontal precision. At the same time, real-time monitoring can be realized for the step process when the strain of the point increases to more than 25000με instantly. The method can also realize the strain detection capability with a response speed of 38 Hz and a 1.28 mm high spatial resolution with monitoring the real-time high-density and large strain distribution.

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Section: Introductionmentioning

confidence: 99%