Plate sizing question?

[Irving]

Run soft armor or backers between you and steel plates to protect from spalling.


Figured thats what you meant, just clarifying for you.

I don't understand this placement. If the round aren't penetrating through the back, isn't the concern from shrapnel going to be in the front?

[clublights]

I don't understand this placement. If the round aren't penetrating through the back, isn't the concern from shrapnel going to be in the front?

Spalling happens on the "inside" too ...


that is why the insides of modern battle tanks are covered in kevlar... the round might not make it thru but fragments of metal bouncing around inside the tank are not good for the.. health.. of the tank crew

[275RLTW]

I don't understand this placement. If the round aren't penetrating through the back, isn't the concern from shrapnel going to be in the front?

Not as much as from out the back. Spalling is the Kinetic Energy (KE) from the projectile transferring to the plate and a portion(s) of the plate breaking off and continuing as a new projectile(s). The KE is transferred in the original direction unless acted upon by an outside force (Newtons 1st Law). Thus, spalling is most commonly seen with parts of the steel broken off the back of the plate where the heat and energy of the round has weakened the integrity of the steel. This is why ceramic is used as it dissipates heat better than steel and a woven ceramic/kevlar firbrous blend (ESAPIs) has better multiple impact protection than sold steel.

[Great-Kazoo]

Not as much as from out the back. Spalling is the Kinetic Energy (KE) from the projectile transferring to the plate and a portion(s) of the plate breaking off and continuing as a new projectile(s). The KE is transferred in the original direction unless acted upon by an outside force (Newtons 1st Law). Thus, spalling is most commonly seen with parts of the steel broken off the back of the plate where the heat and energy of the round has weakened the integrity of the steel. This is why ceramic is used as it dissipates heat better than steel and a woven ceramic/kevlar firbrous blend (ESAPIs) has better multiple impact protection than sold steel.

Couldn't make it any more clear then that. Thanks.

[Irving]

Not as much as from out the back. Spalling is the Kinetic Energy (KE) from the projectile transferring to the plate and a portion(s) of the plate breaking off and continuing as a new projectile(s). The KE is transferred in the original direction unless acted upon by an outside force (Newtons 1st Law). Thus, spalling is most commonly seen with parts of the steel broken off the back of the plate where the heat and energy of the round has weakened the integrity of the steel. This is why ceramic is used as it dissipates heat better than steel and a woven ceramic/kevlar firbrous blend (ESAPIs) has better multiple impact protection than sold steel.

This all makes perfect sense. I was confused because I only watched a few of the AR500 videos where .308 rounds were hardly even deforming the back side. Otherwise, I had no previous knowledge of spalling. Thanks for clearing it up.

[HoneyBadger]

Not as much as from out the back. Spalling is the Kinetic Energy (KE) from the projectile transferring to the plate and a portion(s) of the plate breaking off and continuing as a new projectile(s). The KE is transferred in the original direction unless acted upon by an outside force (Newtons 1st Law). Thus, spalling is most commonly seen with parts of the steel broken off the back of the plate where the heat and energy of the round has weakened the integrity of the steel. This is why ceramic is used as it dissipates heat better than steel and a woven ceramic/kevlar firbrous blend (ESAPIs) has better multiple impact protection than sold steel.

Great explanation. Thanks!