Stress exists ubiquitously and is critically important for the manufacturing industry. Due to the ultrasensitive mechanoresponse of the emission of 1,1,2,2,‐tetrakis(4‐nitrophenyl)ethane (TPE‐4N), a luminogen with aggregation‐induced emission ...
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https://www.riss.kr/link?id=O120359463
2018년
-
0935-9648
1521-4095
SCI;SCIE;SCOPUS
학술저널
n/a-n/a [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
Stress exists ubiquitously and is critically important for the manufacturing industry. Due to the ultrasensitive mechanoresponse of the emission of 1,1,2,2,‐tetrakis(4‐nitrophenyl)ethane (TPE‐4N), a luminogen with aggregation‐induced emission ...
Stress exists ubiquitously and is critically important for the manufacturing industry. Due to the ultrasensitive mechanoresponse of the emission of 1,1,2,2,‐tetrakis(4‐nitrophenyl)ethane (TPE‐4N), a luminogen with aggregation‐induced emission characteristics, the visualization of stress/strain distributions on metal specimens with a pure organic fluorescent material is achieved. Such a fluorescence mapping method enjoys the merits of simple setup, real‐time, full‐field, on‐site, and direct visualization. Surface analysis shows that TPE‐4N can form a nonfluorescent, crystalline uniform film on the metal surface, which cracks into fluorescent amorphous fragments upon mechanical force. Therefore, the invisible information of the stress/strain distribution of the metal specimens are transformed to visible fluorescent signals, which generally matches well but provides more details than software simulation. Remarkably, fatigue crack propagation in stainless steel and aluminum alloy can be observed and predicted clearly, further demonstrating the ultrasensitivity and practicability of TPE‐4N.
A pure organic mechanoresponsive luminogen with ultrasensitivity and aggregation‐induced emission characteristics is used as a coating on metal specimens for the visualization of the stress/strain distribution and fatigue crack propagation. The invisible information of mechanical strain on metal specimens is now visible to the naked eye as a fluorescent signal in real‐time, full‐field and on‐site.
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