Bullet Proof Material: How Does It Work?

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Discussion Overview

The discussion revolves around the properties and mechanisms of bulletproof materials, particularly focusing on their construction, functionality, and the physics behind their operation. Participants explore both theoretical and practical aspects of these materials, including their effectiveness and limitations in real-world scenarios.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants question the manufacturing process of bulletproof materials and whether they are simply stronger materials.
  • One participant suggests that bulletproof materials function more like a trampoline, dispersing energy rather than stopping bullets outright.
  • Another participant explains that bulletproof materials allow kinetic energy from a bullet to be dispersed over a larger area, reducing the likelihood of penetration.
  • It is noted that materials like Kevlar are high strength and layered in different directions to withstand impact forces, but they can still transmit concentrated force, which may cause injury.
  • Some participants mention the use of trauma plates made from titanium and ceramics to enhance protection by distributing force and absorbing impact energy.
  • Concerns are raised about the limitations of bulletproof materials, including the potential for severe blunt force trauma even when penetration is prevented.

Areas of Agreement / Disagreement

Participants express a range of views on the effectiveness and mechanics of bulletproof materials, with no clear consensus on their capabilities or limitations. Disagreements exist regarding the extent to which these materials can protect against various types of impacts.

Contextual Notes

Some claims depend on specific definitions of "bulletproof" and may not account for all types of ammunition or impact scenarios. The discussion does not resolve the complexities of material science involved in bulletproof technology.

jobyts
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How do they make it? is it just a stronger material?

Another one: in movies, the hero neutralize bomb by dropping in water. Is it according to physics principles?
 
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it isn't exactly bullet proof... more like a small but strong trampoline. doesn't try to stop a bullet dead, tries to desipitate the energy around... look up kevlar on wikipedia
 
Exactly, the material is not exactly *strong*. Think of how a bullet works. When it strikes a person, it has a certain amount of kinetic energy, and when that energy is dispersed on a very small area, it will pierce your skin. What bullet proof materials do is allow that kinetic energy to be dispersed over a larger area.
 
Bullet proof materials like Kevlar fiber can with stand the forces of impact. They are high strength materials, and the fibers are interwoven and layered with different principal directions. However, bullet proof materials can stop penetration, but the force can still be transmitted in a concentrated area/point, which could prove fatal. So bullet proof vests are supplemented with certain engineered ceramics which distribute the force over a larger area, while at the same time absorbing some of the impact energy by disintegrating, in some cases.
 
Exactly. For military purposes, those 'trauma plates' are made of titanium along with ceramics. Another advantage (for the wearer, not those standing near him) is that the plates can deflect a bullet away as well as dissipate the impact.
Still, you can't count on one to save you; it's a poor second choice to not getting shot in the first place. Catching even a small round like a .45 ACP will feel like getting smacked with a baseball bat. Broken ribs are a common aftereffect. And, as Astro indicated, a blunt force trauma can stop your heart among other nasty things.
 

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