SILPAKORN UNIVERSITY SCIENCE AND TECHNOLOGY JOURNAL

Volume 13, No. 02, Month MAY, Year 2019, Pages 52 - 58

Comparison of individual characteristics on surface of a bullet fired from polygonal-rifled barrel using super-high vertical resolution non contact 3d surface profiler

Sakolkrit Akejakrawan, Sarit Suebpongsiri

Abstract Download PDF

This research aims to study individual characteristics on surface of a bullet fired from polygonal-rifled barrel and to apply super-high vertical resolution non contact 3D surface profiler to compare individual characteristics on bullet surface. Four 9-mm full metal jacket bullets were fired from three individual semi automatic firearms with polygonal rifling. The results show the efficiency of the super-high vertical resolution non contact 3D surface profiler in identifying the individual characteristics on the surface of a bullet fired from polygonal-rifled barrel. Mean and statistical relationship of depth (Z-axis) of land-engraved areas from the same and different firearms show that the Z-axis of individual characteristics on the surface of a bullet fired from the same polygonal-rifled firearm has no difference in statistical significance at 0.05. Thus, the super-high vertical resolution non contact 3D surface profiler can be applied to identify and compare individual characteristics on the surface of a bullet fired from a polygonal-rifling barrel.

Keywords

bullet surface, 3D surface profiler, polygonal rifling

---