Device for detecting impact property of thin film material

Abstract

The invention provides a device for detecting the impact property of a thin film material. The device comprises a working module and a laser module, the working module comprises a shell, a vibration sheet, a projectile and transparent glass; a working cavity is formed in the shell, a vibration sheet is mounted in one end of the working cavity, and a to-be-detected film is mounted in the other end of the working cavity; a projectile is placed on the vibration sheet; transparent glass is installed at one end of the working cavity and located below the vibration piece. The laser module is used for generating a laser beam, the laser beam penetrates through the transparent glass to impact the vibration sheet, so that the vibration sheet generates vibration and is used for providing kinetic energy for the projectile, and the projectile obtaining the kinetic energy is used for impacting a to-be-detected film. The high-energy nanosecond pulse laser is utilized to induce shock waves to act on the vibration sheet, the vibration sheet drives the projectile to impact the film, the device is simple in structure, large in measurable range and good in repeatability, and the performance of the film under impact of the projectile in any shape can be detected.

Description

technical field [0001] The invention relates to the field of testing the impact performance of thin film materials, in particular to a device for testing the impact performance of thin film materials. Background technique [0002] Thin film materials have important applications in spacecraft antennas, solar concentrators and solar sails. The spacecraft in orbit for a long time is exposed to the space environment, and the thin film structure on the surface will be hit by micrometeoroids and orbital debris at high speed, resulting in fracture damage. Therefore, it is necessary to test the mechanical properties of thin film materials under high strain rate conditions caused by impact loading. [0003] The drop weight impact test of the film is a test method to detect the impact resistance of the film. The drop hammer impact test is to drop a weight of known weight vertically from a known height to impact the sample to measure the impact resistance of the test material. Howev...

AI Technical Summary

Problems solved by technology

The laser-driven flyer method can detect at a high speed, but there are problems with the single shape of the flyer and difficulties in the observation and control of the flyer

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