Let's Talk Body Armor (Feature Length) 101

Published on January 4, 2020
Duration: 28:20

This comprehensive guide to body armor covers threat levels, material comparisons (steel vs. composite), and the mechanics of ballistic penetration. It clarifies the 'Level 3+' designation, explains backface deformation, spalling, and the importance of trauma pads. The video also details plate cuts for mobility, weight trade-offs, armor expiration, strike face orientation, and different plate carrier types.

Quick Summary

Body armor threat levels range from Level 2 (pistol calibers up to .44 Magnum) to Level 4 (armor-piercing rounds like .30-06 M2 AP). Level 3 and 3+ stop common rifle rounds. 'Level 3+' is a manufacturer term, not an official NIJ rating.

Chapters

  1. 00:00Introduction to Body Armor 101
  2. 00:58Understanding Ballistic Threat Levels
  3. 02:15Steel vs. Composite Armor Materials
  4. 04:00Velocity and Penetration Mechanics
  5. 05:40The 'Level 3+' Rating Explained
  6. 07:44Impact Characteristics & Backface Deformation
  7. 08:40Spalling and Build-up Coatings
  8. 10:25Energy Transfer and Trauma Pads
  9. 11:52Plate Cuts: Standard, Shooter's, Swimmer's
  10. 13:13Weight and Mobility Trade-offs
  11. 15:21Armor Expiration and Degradation
  12. 17:13Strike Face and Orientation
  13. 18:10Plate Carrier Types Reviewed

Frequently Asked Questions

What are the different NIJ body armor threat levels?

NIJ Level 2 armor stops pistol rounds up to .44 Magnum. Level 3 and 3+ are for common rifle rounds like 7.62x51mm (.308) and 5.56x45mm NATO. Level 4 is designed to stop armor-piercing rounds, specifically .30-06 M2 AP.

What is the difference between steel and composite body armor?

Steel plates (like AR500) are durable and have minimal backface deformation but cause spalling and transfer significant energy. Composite plates are lighter, absorb more energy by expanding, but can exhibit higher backface deformation and blunt force trauma.

Is 'Level 3+' an official NIJ body armor rating?

No, 'Level 3+' is not an official NIJ (National Institute of Justice) designation. It's a manufacturer-specific term indicating that their plates exceed standard Level 3 requirements, often stopping faster or heavier rifle rounds than a standard Level 3 plate.

Why is armor orientation important?

Armor plates are directional. The 'strike face' must always face the incoming threat. For composites, this ensures proper layer sequencing, and for steel, it ensures the anti-spall coating is facing outward to contain fragments.

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