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High Strain-Rate Behavior Of Mechanoluminescent Material Dispersed In A Soft Polymer Matrix

High Strain-Rate Behavior Of Mechanoluminescent Material Dispersed In A Soft Polymer Matrix

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Title: High Strain-Rate Behavior Of Mechanoluminescent Material Dispersed In A Soft Polymer Matrix
Author: Omeziri, Chukwubuikem
Czekanski, Aleksander
Identifier: CSME233
Abstract: Mechanoluminescence (ML) is the emission of light from a solid material in response to mechanical stimuli [1]. Mechanoluminescent materials are classified based on the types of stress activation required for luminescence behaviour. In this paper, we propose the study of light emission characteristics of an elastico-mechanoluminescent (EML) material dispersed in a soft polymer matrix, under high-strain compressive loading for a qualitative and quantitative testing of onsite strain. We developed a strain sensor by creating a composite material through the combination of a polydimethylsiloxane (PDMS) matrix structure and strontium aluminate, europium, and dysprosium doped (SAOED) crystals. SAOED crystals possess a strong luminescence behavior, which has led to their proliferation as a viable optical sensor. Composite materials were tested using a modified Kolsky bar and high-speed camera. The light-emitting characteristics of the SAOED crystals in response to mechanical stimuli allows for the quantification of stress–strain experienced by the composite material. The light intensity, which is measured by a complementary metal–oxide–semiconductor (CMOS) sensor in a high-speed digital camera, provides a quantitative measure of the strain-rate. Light-emitting characteristics of the EML material and the strain behavior of the material were studied.
Subject: Materials Technology
Mechanoluminescent crystals
High strain-rate
Elastico-mechanoluminescence
Strain sensor
SAOED
Type: Article
Rights: The copyright for the paper content remains with the author.
URI: http://hdl.handle.net/10315/35429
http://dx.doi.org/10.25071/10315/35429
Published: CSME-SCGM
ISBN: 978-1-77355-023-7
Date: 2018-05

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