ABSTRACT 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 (SrAl2O4: Eu2+, Dy3+) (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.

中文翻译：

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超声固化处理法增强SrAl2O4:Eu2+、Dy3+/Epoxy复合材料的机械发光灵敏度

摘要在本文中，我们提出了一种新的方法来提高由环氧树脂和铝酸锶共掺杂铕离子和镝离子（SrAl2O4：Eu2+，Dy3+）（SAOED）制成的复合材料的机械发光 (ML) 灵敏度，方法是将其置于整个固化过程中的超声波振动。三种不同的 SAOED 粒径模型经受不同的超声波频率；200 kHz；120 kHz；40 kHz 和控制 0 kHz，以研究超声频率对 ML 灵敏度的影响。使用扫描电子显微镜 (SEM) 图像进行了一系列断口分析，以揭示界面结合完整性的变化。此外，还进行了微计算机断层扫描 (micro-CT) 测试以检查复合材料中的颗粒分散和形态。