Traditional DIC measurement suffers from blind zones in falling ball impact tests on mobile phone screens, as the impact point is blocked by the falling ball. To solve this problem, we adopt the self-developed Revealer binocular DIC system with a rear-side measurement strategy. Equipped with two S1315M high-speed cameras at 10000 FPS, the system fully captures the dynamic deformation of phone screens under impact.
The test results show that the displacement field spreads concentrically from the impact point with a maximum resultant displacement of 0.179 mm, and the peak principal strain reaches 672 με, which is consistent with the thin-plate impact bending theory. The Revealer RVM-DIC system eliminates front-side measurement blind areas, realizes full-field dynamic response acquisition, and provides accurate measured data for finite element model verification, parameter calibration and impact resistance optimization of screen and thin-plate structures.
English
Deutsch
