Materials with mechanoluminescent properties and their use for registration of impact

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Tatmyshevskiy, K.V.^1

Institute of Information Technology and Radio Electronics, Vladimir State University, 87 Gorky Street, Vladimir

600000, Russia^1

关键词: Calculation results;    Charged dislocations;    Elasto-plastic;    Impact indicators;    Luminescence centers;    Moving dislocation;    Optical signals;    Theory of plasticity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/2/022077/pdf
DOI  :  10.1088/1757-899X/537/2/022077

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In the present article, the questions of using the materials with mechanoluminescent properties as impact indicators are analyzed. The class of substances that exhibit mechanoluminescence (ML) the most intensively is revealed. Various designs of ML transducers are considered. The mechanism of ML radiation, which is based on the interaction between the mobile charged dislocations with the luminescence centers, formed by the activator atoms, are considered. Space charge of the moving dislocations causes tunneling of electrons to excited state with the subsequent radiating transitions. The problem of calculation of elasto-plastic strain of the transducer was solved by means of the microdynamic theory of plasticity. Equation of the intra center ML kinetics is given, with separate calculation results. The major features of the output optical signals of ML transducers on impact is analyzed.