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Chapter Eighteen Part II Explosive Investigations FRSC 8104 Criminalistics II Professor Bensley

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FRSC 8104 Chapter 18 Objectives After studying this chapter, the student should be able to: Describe the various types of explosives and explosions Understand how explosives evidence is analyzed

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FRSC 8104 Chapter 18 Outline I.Introduction A.Definition of an explosion Anatomy of an explosion

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Anatomy of an Explosion Video: Anatomy of an Explosion - The ShockwaveAnatomy of an Explosion - The Shockwave

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FRSC 8104 Chapter 18 Outline II.Explosive Classification A.Low Explosives (Propellants) 1.Speed of deflagration (burning) 2.Black Powder (Gun powder)

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FRSC 8104 Chapter 18 Outline 3.Smokeless Powder Black and smokeless powders. (a) ''perforated disc'' smokeless powder. (b) "tube" smokeless powder. (c) "cut square" smokeless powder. (d) "disc" smokeless powder. (e) Grade Fg black powder. (f) Grade FFFg (3Fg) black powder. Photographs a to d courtesy of the Federal Bureau of Investigation Chemistry Unit's powder morphology database. Photographs e and f courtesy of Rho Sigma Associates, Inc.

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FRSC 8104 Chapter 18 Outline B.High Explosives 1.Speed of detonation 2.2,4,6-Trinitrotoluene 3.RDX

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FRSC 8104 Chapter 18 Outline 4.Nitroglycerin

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FRSC 8104 Chapter 18 Outline 5.Pentaerythritol Tetranitrate Northwest Flight 253 80 grams of PETN (12/25/09) What would have happened And another one

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FRSC 8104 Chapter 18 Outline 6.Ethylene Glycol Dinitrate 7.Ammonium Nitrate (ANFO)

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FRSC 8104 Chapter 18 Outline 8.Military Explosives (C-4) USS Cole (10/12/2000)

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FRSC 8104 Chapter 18 Outline C.Initiators (Primary Explosives Blasting Caps)

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FRSC 8104 Chapter 18 Outline III.Laboratory Analysis A.Chromatography 1.TLC 2.GC (GC/MS and GC/FTIR) 3.HPLC

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FRSC 8104 Chapter 18 Outline B.IR C.RDX (X-ray Diffraction not to be confused with RDX the explosive!)

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FRSC 8104 Chapter 18 Outline D.Spot Tests (Field Tests included)

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Rose Apartments 11/11/12

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