A High-Throughput Freezing Experimental Model of Spallation Damage Evolution and Its Realization Method

Abstract

The embodiment of the invention discloses a high-flux laminar damage evolution freezing experiment model and a realization method, including a target frame with a certain stiffness and low impedance, the target frame is provided with a number of uniformly distributed through holes of the same size, the target frame is A rear target plate with different counterbore depths is installed at the position of each through hole, and the through hole is provided with a front target plate at the opposite end of the rear target plate; the method includes the following steps: the end face of the counterbore of the rear target plate is forward Correspondingly installed in the through hole position of the target frame; the front target plate is embedded in the through hole of the target frame; according to the order of the counterbore from small to large, use the light air gun to simultaneously apply the same impact to multiple front target plates Use a high-precision electronic computed tomography scanner to monitor the internal meso-damage evolution of each front target plate; this scheme loads multiple target plates on the target frame at one time, which improves the efficiency of the light gas gun plate impact experiment and the level of The experimental efficiency of the cracking experiment and the control accuracy of the loading conditions are improved, and the accuracy of the exploration of the spalling damage process of the material is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of spall damage experiments, and in particular to a high-throughput freezing experimental model of spall damage evolution and an implementation method. Background technique [0002] Material damage and even structural damage caused by high-speed collisions of objects exist in various fields of production and life, such as automobile collisions, flying debris in machining, and especially in aerospace and military fields, there are a large number of high-speed moving objects, so the study of material dynamics Injury destructive behavior is of great significance. [0003] Among them, spallation is a typical dynamic damage behavior. Since the sparse waves reflected by the compression wave on the free surface meet inside the material, the tensile failure of the material is caused. When the tensile stress exceeds the spallation threshold and the loading pulse width is sufficient Under this c...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a high-throughput spallation damage evolution freezing experimental model and its implementation method. Multiple target plates are loaded on the target frame at one time, which greatly improves the efficiency of the flat plate impact experiment of the light gas cannon. Improve the experimental efficiency of the spallation experiment and the control accuracy of the loading conditions, and improve the accuracy of exploring the material spalling damage process, so as to solve the low experimental efficiency caused by a single target plate impact in the prior art, and the control of loading conditions for replacing the target plate Inconsistent, unable to obtain the evolution process of spall damage

Images