Fracto-Emission from Ceramics

本研究的目的是了解裂纹在固体中传播之前、期间和之后的粒子和光子发射。裂缝发射技术是研究裂纹形成、破坏机制和裂纹扩展的一种新颖的创新技术。光子和粒子发射的快速时间响应允许在极短的时间间隔（10 ns）内探测断裂事件。脆性断裂过程中的原子水平事件（断裂发射）将与能量耗散的概念（具有空间和时间分辨率）相关。本文将分析脆性和半脆性材料的突变裂纹扩展动力学。将学习玻璃、陶瓷和金属陶瓷复合材料。

The goal of this research is to understand emission of particles and photons before, during, and following the propagation of crack in a solid. This technique, fracto- emission, is a novel and innovative technique to study the crack formation, failure mechanisms, and crack propagation. The fast time response of photon and particle emission allows probing of fracture events over extremely short time intervals ( 10 ns). Atomic level events (fracto-emission) during brittle fracture will be related with the concepts of energy dissipation (with spatial and temporal resolution). The dynamics of catastrophic crack growth in brittle and semi-brittle materials will be analyzed. Glass, ceramic, and metal-ceramic composites will be studied.