Keywords and Phrases
Additive manufacturing; Explosives engineering; Linear shaped charge
”A shaped charge is an explosive device used to focus detonation energy in a desired direction. Additive Manufacturing (AM) can allow greater design freedom and geometric complexity for the liner portion of the shaped charge.
In this work, the following hypotheses were tested: 1) Adjusting the initial apex angle of a linear shaped charge liner reduces the amount of run up that occurs, and 2) implementing a backstop at the end of a linear shaped charge liner reduces the amount of run down that occurs.
Linear shaped charge liners with a continuously changing apex angle were created with additive manufacturing. Three separate sets of liner bases were created: two sets had initial apex angles of 55 and 70 degrees respectively, and the third set served as a standard with an initial apex angle of 85 degrees.
Linear shaped charge liners with backstops were also created with additive manufacturing. Backstops of 1x, 2x and 3x the thickness of the liner were implemented at the end of the liner top to test effectiveness in reducing run down.
The results from testing hypothesis 1 indicated that changing the apex angle yielded little reduction in the run up area, however, the overall penetration depth was deeper with the more acute initial apex angle. The results from testing hypothesis 2 indicated that the backstop greatly reduced the run down area. A third experimental test series was developed to test the combination of the apex angle change and the backstop and showed high repeatability. The use of additive manufacturing to create linear shaped charge liners was successful”--Abstract, page iii.
Johnson, Catherine E.
Worsey, Paul Nicholas
Mulligan, Phillip R.
M.S. in Explosives Engineering
Missouri University of Science and Technology
xi, 77 pages
© 2020 Jason Ho, All rights reserved.
Thesis - Open Access
Ho, Jason, "Additive manufacturing of linear shaped charges to address run up and run down phenomena" (2020). Masters Theses. 8026.