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Real-time and visible monitoring of stress distribution using organic mechanoresponsive luminogen

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A real-time and visible stress monitoring method based on a pure organic mechanoresponsive luminogen (MRL) was proposed in this work.1,1,2,2-tetrakis(4-nitrophenyl)ethene (TPE-4N) could produce ultrasensitive and visible mechanoresponsive fluor-escence.Metal specimens were coated with a uniform TPE-4N film,wherein mechanical deformation was transformed into visible fluorescence.Tensile tests were conducted to determine the calibration relationship between the stress value and fluorescence intensity.The accuracy of stress measured using the organic MRL method was investigated on single-edge notched tension specimens.Results show that the stress distribution obtained using the proposed method agrees well with that calculated using ANSYS simulation.The organic MRL method may open up new opportunities for large-scale,full-field,on-site mon-itoring of stress distribution in complicated structural components.

stress measurementreal-time monitoringorganic mechanoluminescence

ZHANG Le、ZHANG Zhe、LIN Hong、CHEN Gang、CHEN Xu

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School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China

Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology,Tianjin 300350,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2018YFC0808600nos.520753685160532511772219

2021

中国科学:技术科学(英文版)
中国科学院

中国科学:技术科学(英文版)

CSTPCDCSCDSCIEI
影响因子：1.056
ISSN：1674-7321
年,卷(期)：2021.64(12)
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