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Chapter Eighteen Part II – Explosive Investigations

Chapter Eighteen Part II – Explosive Investigations. FRSC 8104 Criminalistics II Professor Bensley. FRSC 8104 – Chapter 18 Objectives. After studying this chapter, the student should be able to:  Describe the various types of explosives and explosions

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Chapter Eighteen Part II – Explosive Investigations

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  1. Chapter Eighteen Part II – Explosive Investigations FRSC 8104 Criminalistics II Professor Bensley

  2. 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

  3. FRSC 8104 – Chapter 18 Outline • Introduction • Definition of an explosion Anatomy of an explosion

  4. Anatomy of an Explosion Video: Anatomy of an Explosion - The Shockwave

  5. FRSC 8104 – Chapter 18 Outline • Explosive Classification • Low Explosives (Propellants) • Speed of deflagration (burning) • Black Powder (Gun powder)

  6. FRSC 8104 – Chapter 18 Outline • 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.

  7. FRSC 8104 – Chapter 18 Outline • High Explosives • Speed of detonation • 2,4,6-Trinitrotoluene • RDX

  8. FRSC 8104 – Chapter 18 Outline • Nitroglycerin • PentaerythritolTetranitrate Northwest Flight 253 – 80 grams of PETN (12/25/09) What would have happened…

  9. FRSC 8104 – Chapter 18 Outline • Ethylene Glycol Dinitrate • Ammonium Nitrate (ANFO)

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

  11. FRSC 8104 – Chapter 18 Outline • Initiators (Primary Explosives – Blasting Caps)

  12. FRSC 8104 – Chapter 18 Outline • Laboratory Analysis • Chromatography • TLC • GC (GC/MS and GC/FTIR) • HPLC

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

  14. FRSC 8104 – Chapter 18 Outline • Spot Tests (Field Tests included)

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