Doctoral Dissertations

Abstract

"Linear Shaped Charges (LSCs) have been assumed to function in the same manner as Conical Shaped Charges (CSCs) in published literature on the subject. Much work has been done on CSC for military purposes, but there is limited information about the mechanics ofLSCs. Previous theories have cited the formation of a Monroe Jet as the dominant process. The Monroe Effect describes what happens to a target below the charge following detonation of the charge, and prescribes a fluid jet process for penetration. However, a previous research project performed at the University of Missouri at Rolla (UMR) using LSCs to penetrate a reinforced concrete walls has shown that the blade formation process of LSCs is not the same as that of CSCs' jetting. In addition, a small portion of the bottom part of the LSC blade was uniformly missing. After close investigation, this phenomenon was named the 'Halo effect', and a follow-up study was performed to describe the mechanics of this effect. Theoretically, the difference in mechanisms between CSC and LSC can be explained by the method of initiation. CSCs are top initiated and result in a horizontal detonation plane moving downward toward the target. In LSCs, the initiation is at the end of the charge and after some run up distance, the detonation travels along the charge in a vertical plane. This fact and the additional Halo effect both detailed in this work present a new revolutionary explanation for the mechanics of the LSC blade formation and cutting processes"-- Abstract, p. iii

Advisor(s)

Worsey, Paul Nicholas

Committee Member(s)

Myers, John
Baird, Jason, 1955-
Miller, F. Scott, 1956-
Tien, Jerry C.

Department(s)

Mining Engineering

Degree Name

Ph. D. in Mining Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 2006

Pagination

xi, 112 pages

Note about bibliography

Includes bibliographical references (pages 108-111).

Rights

© 2006 Seokbin Lim, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type

text

Language

English

Subject Headings

Blasting -- ResearchExplosives -- ResearchSpallation (Nuclear physics)

Thesis Number

T 8978

Print OCLC #

123074527

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