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1. 中国科学院 城市环境研究所, 福建 厦门 361021
2. 厦门理工学院材料科学与工程学院 福建省功能材料及应用重点实验室, 福建 厦门 361024
3. 辽宁师范大学 化学与化工学院, 辽宁 大连 116029
纸质出版日期:2016-9-5,
收稿日期:2016-4-22,
修回日期:2016-5-17,
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付晓燕, 房立钧, 郑升辉, 张洪武. 超声引起的SrAl<sub>2</sub>O<sub>4</sub>:Eu,Dy薄膜的应力发光[J]. 发光学报, 2016,37(9): 1066-1070
FU Xiao-yan, FANG Li-jun, ZHENG Sheng-hui, ZHANG Hong-wu. Mechanoluminescence of SrAl<sub>2</sub>O<sub>4</sub>: Eu,Dy Film Induced by Ultrasound[J]. 发光学报, 2016,37(9): 1066-1070
付晓燕, 房立钧, 郑升辉, 张洪武. 超声引起的SrAl<sub>2</sub>O<sub>4</sub>:Eu,Dy薄膜的应力发光[J]. 发光学报, 2016,37(9): 1066-1070 DOI: 10.3788/fgxb20163709.1066.
FU Xiao-yan, FANG Li-jun, ZHENG Sheng-hui, ZHANG Hong-wu. Mechanoluminescence of SrAl<sub>2</sub>O<sub>4</sub>: Eu,Dy Film Induced by Ultrasound[J]. 发光学报, 2016,37(9): 1066-1070 DOI: 10.3788/fgxb20163709.1066.
为了实现超声探伤和应力发光探伤二者结合,研究了SrAl
2
O
4
:Eu,Dy(SAOED)/硅橡胶在超声振动下的应力发光性质。薄膜的微观结构表明,SrAl
2
O
4
:Eu,Dy应力发光颗粒被高弹性的硅胶包裹。当超声波作用到薄膜表面时,超声振动可以促使应力发光颗粒周围的硅橡胶发生各种形变,从而使被包裹的应力发光颗粒发生有效形变,产生高效的应力发光。薄膜厚度以及超声频率对SAOED发光薄膜的应力发光有明显的影响。薄膜的超声应力发光强度随着薄膜厚度的增加先增大,当薄膜的厚度为1 mm时达到最大,之后随着薄膜厚度的增加而降低。薄膜的超声应力发光强度与超声频率大小成正比,即使最低频率仅为500 Hz时仍能检测到信号,说明SrAl
2
O
4
:Eu,Dy/硅橡胶发光薄膜是一种很有应用前途的无损检测传感器。
In order to realize the application of mechanoluminescent materials in novel nondestructive examination sensors with high sensitivity
the ultrasound induced mechanoluminescent (ML) properties of SrAl
2
O
4
:Eu
Dy/Si rubber films were investigated. The ML particles were wrapped by Si rubberwith high elasticity. When the ultrasonic wave was applied on the film
the vibration induced the deformation of Si rubber easily. Then the particles wrapped by rubber deformed accordingly to produce strong ML. The experiment results indicate that the film thickness and ultrasonic frequency have strong effects on the ML intensity. The ML intensity enhances with the increasing of the film thickness
and reaches the strongest at 1 mm
then decreases with the increasing of the film thickness. The ML intensity enhances with the increasing of the ultrasonic frequency. Furthermore
even the ultrasonic frequency was as low as 500 Hz
the SrAl
2
O
4
:Eu
Dy/Si rubber films still can produce resolvable ML. These results indicate that SrAl
2
O
4
:Eu
Dy/Si rubber films possess great potential in the nondestructive examination sensors.
SrAl2O4:EuDy/Si橡胶应力发光薄膜超声应力发光无损检测传感器
SrAl2O4:EuDy/Si rubber filmultrasound induced mechanoluminescencenondestructive examination sensors
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WANG X D, ZHANG H L, YU R M, et al.. Dynamic pressure mapping of personalized handwriting by a flexible sensor matrix based on the mechanoluminescence process[J]. Adv. Mater., 2015, 27(14):2324-2331.
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