Enhancement of mechanoluminescence sensitivity of SrAl2O4: Eu2+, Dy3+/Epoxy composites by ultrasonic curing treatment method

In this paper, we present a novel approach to enhance the mechanoluminescence (ML) sensitivity of composite made with epoxy resin and strontium aluminate co-doped with europium ions and dysprosium ions (SrAl 2 O 4 : Eu 2+ , Dy 3+ ) (SAOED) by subjecting it to ultrasonic vibration throughout the curi...

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Bibliographic Details
Published in:Composite interfaces 2021-01, Vol.28 (1), p.77-99
Main Authors: Kerekes, Tomas Webbe, You, Hangil, Hemmatian, Tahmineh, Kim, Jooyoun, Yun, Gun Jin
Format: Article
Language:English
Subjects:
interfacial bonding
Mechanoluminescence
ultrasonic cavitation
wettability
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Summary:In this paper, we present a novel approach to enhance the mechanoluminescence (ML) sensitivity of composite made with epoxy resin and strontium aluminate co-doped with europium ions and dysprosium ions (SrAl 2 O 4 : Eu 2+ , Dy 3+ ) (SAOED) by subjecting it to ultrasonic vibration throughout the curing process. Three different SAOED particle size models were subjected to different ultrasonic frequencies; 200 kHz; 120 kHz; 40 kHz and control 0 kHz, in order to investigate the effect of sonication frequency on ML sensitivity. A series of fractography analyses was conducted using scanning electron microscopy (SEM) images to reveal the changes in interfacial bonding integrity. Also, micro-computed tomography (micro-CT) test was conducted to examine the particle dispersion and morphology in the composites. Physical mechanisms on how the ultrasonic curing treatment (UCT) can enhance the interfacial bonding strength was discussed.
ISSN:0927-6440
1568-5543
DOI:10.1080/09276440.2020.1740522