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Author Topic: What are the physics of bullet proof vests?  (Read 4544 times)

Offline William McCormick

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What are the physics of bullet proof vests?
« on: 03/09/2012 03:55:08 »

Check this out, it is something most people do not know or believe. It is totally true.

That round can penetrate some steel. We know when working with metal that it takes a lot of power to penetrate steel with a punch. So when a bullet does it, it does it with electrical force.




                      Sincerely,

                            William McCormick


 

Offline RD

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Re: What are the physics of bullet proof vests?
« Reply #1 on: 03/09/2012 05:00:04 »
Check this out, it is something most people do not know or believe. It is totally true ...


Independent testing of the bullet proof vests made by "second chance" (shown in the above video) found them lacking ...
http://www.usatoday.com/news/nation/2005-07-01-bodyarmor-lawsuit_x.htm

Quote
NIJ’s testing found that the Second Chance upgrade kits added protection when used with the existing used body armor. However, the level of protection did not meet existing NIJ performance standards for new body armor.

   Also, the vest/upgrade kit combinations in all three protection levels experienced excessive “backface signatures.” This means that the bullets didn’t penetrate the vest, but the impact of one or more bullets created a “dent” of more than 44 mm (almost 2 inches) into the clay in back of the vests during testing, a depth that may cause serious injury.
http://www.nij.gov/journals/254/body_armor_print.html

see here ...
t=9s  [at 48 seconds] to see the type of dent.
« Last Edit: 03/09/2012 23:05:18 by RD »
 

Offline William McCormick

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Re: What are the physics of bullet proof vests?
« Reply #2 on: 03/09/2012 06:03:17 »
Check this out, it is something most people do not know or believe. It is totally true ...


Independent testing of the bullet proof vests made by "second chance" found them lacking ...
http://www.usatoday.com/news/nation/2005-07-01-bodyarmor-lawsuit_x.htm

Quote
NIJ’s testing found that the Second Chance upgrade kits added protection when used with the existing used body armor. However, the level of protection did not meet existing NIJ performance standards for new body armor.

   Also, the vest/upgrade kit combinations in all three protection levels experienced excessive “backface signatures.” This means that the bullets didn’t penetrate the vest, but the impact of one or more bullets created a “dent” of more than 44 mm (almost 2 inches) into the clay in back of the vests during testing, a depth that may cause serious injury.
http://www.nij.gov/journals/254/body_armor_print.html

see here ...
t=9s  [at 48 seconds] to see the type of dent.

I was talking about the lack of movement by the fellow being hit by the round, not the vests longevity.

                      Sincerely,

                            William McCormick
 

Offline RD

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Re: What are the physics of bullet proof vests?
« Reply #3 on: 03/09/2012 08:02:14 »
I was talking about the lack of movement by the fellow being hit by the round, not the vests longevity.

If, say, hypothetically, the video was a faked demonstration with only a little gunpowder in the bullets, then there would be little recoil on the guns and little impact on the demonstrators from the light load bullets.  Then independent testing with full load bullets would show the vests were not as protective as advertised, which was the case ... http://www.thenakedscientists.com/forum/index.php?topic=45382.msg396014#msg396014

Apparently "second chance" was not an ethical company ...
Quote
Dr. Westrick worked as the research chief for Second Chance, but was removed from managerial responsibilities after he recommended that the company inform its customers that the vests were defective. He was terminated by Second Chance once the company learned that Westrick has provided documents to the Department of Justice that documenting corporate greed over protecting the lives of police officers. Specifically, Westrick provided documentation that continued sale of the vests would result in the loss of life. Despite these warnings, the company continued selling the vests.
http://www.whistleblowers.org/index.php?option=com_advancedtags&view=tag&id=19
« Last Edit: 03/09/2012 08:21:14 by RD »
 

Offline William McCormick

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Re: What are the physics of bullet proof vests?
« Reply #4 on: 03/09/2012 15:14:00 »
And all of this has nothing to do with the fact that "a small magnetic field all over the Earth" can not "spin up" nor "slow down" the earth, as has been amply demonstrated by the fact that the earth has been subjected to a range of natural variations in both its own magnetic field and external magnetic fields it has been exposed to, without showing the slightest inclination to "spin up" or "slow down", quite apart from the fact that there is no mechanism known to science whereby this might be achieved, quite apart from the fact that the huge kinetic energy associated with the earth's rotation could not conceivably be altered by the energy cheap process of applying "a small magnetic field all over the Earth".

William is obviously very impressed with electricity and explosions and arcs and other such phenomena, but his idea of "science" is a long way out beyond the orbit of the moon!

I am impressed with all of Gods creations and wisdom. However the actual scientific effect, is as I stated. The earth is created and kept created by external forces. Take them away, alter them and the earth responds like a piece of aluminum in a magnetic field. You can make it dance or hurl it like particles of electricity, because that is what it is.

It is interesting, that you would make such a claim about the actual kinetic energy of a bullet of that caliber, you guys should know this already. You should know there is no reason to fake, any of it. Because a round of that caliber really delivers very little actual energy. The high velocity bullet cuts with a plasma action, or it is disintegrated against a very large piece of metal it cannot plasma cut.
There are large bullet like rounds that you can steer to target, that are dropped from planes, however they use the arrow effect to push through many feet of reinforced concrete. Much like some elevator repair men use a large long solid piece of stainless steel, to clear hydraulic cylinders, of debris, using what they call a bullet. If dropped from a roof, it could probably create a very nice hole in the ground, many feet deep. If you were to drop it off a roof top, of a city building, it would probably penetrate reasonably heavy armor. 

The American tanks could not take out the Panza tanks because of the thick armor. The American shells just vaporized against the Panza tank. They ended up taking them out with a tin tipped, ammo. The tin was isolated by a piece of Teflon, from the large body of the shell that was made of lead. When the tin with its low melting point, and high boiling point, liquefied, and boiled, after nearing the surface, the tin vapor, the gases were compressed, creating temperatures as hot or hotter then the sun, totally destructive temperatures, along with a lot of particles of electricity, and super pressures.

Because the round was moving, even though the pressures created went off the charts, you cannot just reverse the direction of an object instantly, it has to stop, and the time it took to stop the large long lead body of the round. Was enough to maintain a seal over the hole in the Panza. The round would blow molten vaporized metal into the tank, killing everyone inside. Often detonating ammo within. As the heated air was instantly compressed.

If you have ever seen a rifle round enter water, you know that it is not really imparting an amazing amount of kinetic energy to the water. A very lack luster amount of energy is actually delivered to a pool of water. Much less then a fist sized stone does when thrown into the water. Some higher velocity rifle rounds actually disintegrate when they hit the water. But yet they do not impart a great deal of energy to the water.

On the other hand, a small container like a gallon sized container of water, when struck with a high velocity round, will burst into a vapor. Showing that at a certain mix or a certain "x" you can maximize the power of the round, verses the size and weight of the target.

                      Sincerely,

                            William McCormick
 

Offline William McCormick

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Re: What are the physics of bullet proof vests?
« Reply #5 on: 03/09/2012 15:25:47 »
I was talking about the lack of movement by the fellow being hit by the round, not the vests longevity.

If, say, hypothetically, the video was a faked demonstration with only a little gunpowder in the bullets, then there would be little recoil on the guns and little impact on the demonstrators from the light load bullets.  Then independent testing with full load bullets would show the vests were not as protective as advertised, which was the case ... http://www.thenakedscientists.com/forum/index.php?topic=45382.msg396014#msg396014

Apparently "second chance" was not an ethical company ...
Quote
Dr. Westrick worked as the research chief for Second Chance, but was removed from managerial responsibilities after he recommended that the company inform its customers that the vests were defective. He was terminated by Second Chance once the company learned that Westrick has provided documents to the Department of Justice that documenting corporate greed over protecting the lives of police officers. Specifically, Westrick provided documentation that continued sale of the vests would result in the loss of life. Despite these warnings, the company continued selling the vests.
http://www.whistleblowers.org/index.php?option=com_advancedtags&view=tag&id=19

We fired many small caliber rifle rounds into many different objects. We found them to be lacking any actual, kinetic energy. No more energy then a man with a hammer in his hand, can duplicate.

Men in world War One, would often have their heads pop, when a round of solid brass that hit many feet away from them, pulled the particles of electricity out of the earth, out of them, and turned their head into an ARC emitter. Popping their skulls. The effects of a shell are electrical in nature. But there is some actual weight and force delivered.

We used to drop mercury bombs on the Vietnamese, and it created a similar effect. It could actually blow your legs off if you were within a certain perimeter of the bomb going off, as the ground sucked particles of electricity out of the ground, with initiating explosive voltages. While making the air within the perimeter, super abundant with particles of electricity. War is nasty. 



                      Sincerely,

                            William McCormick 

 

Offline William McCormick

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Re: What are the physics of bullet proof vests?
« Reply #6 on: 03/09/2012 17:29:21 »
Check this out, it is something most people do not know or believe. It is totally true ...


Independent testing of the bullet proof vests made by "second chance" found them lacking ...
http://www.usatoday.com/news/nation/2005-07-01-bodyarmor-lawsuit_x.htm

Quote
NIJ’s testing found that the Second Chance upgrade kits added protection when used with the existing used body armor. However, the level of protection did not meet existing NIJ performance standards for new body armor.

   Also, the vest/upgrade kit combinations in all three protection levels experienced excessive “backface signatures.” This means that the bullets didn’t penetrate the vest, but the impact of one or more bullets created a “dent” of more than 44 mm (almost 2 inches) into the clay in back of the vests during testing, a depth that may cause serious injury.
http://www.nij.gov/journals/254/body_armor_print.html

see here ...
t=9s  [at 48 seconds] to see the type of dent.

You can see in that one case the round that penetrated, did not deform, like standard rounds tested on the vest. This effect is well known.

You can stab an officer wearing soft body armor with an ice pick and the armor will not stop the ice pick. So if you use what some call an armor piercing round that does not deform, it may very well wiggle through the fibers of the vest. Add that the vest that failed was old, and surely is going to oxidize or chlorinate with age, and I don't see anything strange or even done wrong or out of malice. It falls back to the Federal government withholding funds that belong to the individuals of America. That keep agencies from updating their equipment.

Remember how this country started. Good old Benjamin Franklin is sitting around with the boys, discussing how they are going to have to do everything a country does for its individuals. When it came to money, he believed that the English based their money on Gold or some commodity, or so he was told.

When they demonstrated a country starting up. It started with Benjamin Franklin the printer, printing money of a 100 dollar denomination. He then purchased that denomination in gold from George Washington. Benjamin Franklin now had 100 dollars worth of gold, George Washington had a piece of freshly printed paper.

The money was backed by the gold. And when George Washington spent the money, Benjamin Franklin quickly took a tax from George Washington. At the time the tax was about 50 percent. So Benjamin Franklin without doing anything but printing money, had 100 dollars worth of gold, and half the paper he printed, back in his possession. When the fellow George Washington gave the money to, spent his money, Benjamin Franklin had 75 dollars of his paper back and the 100 dollars worth of gold.
It was about at this time that taxation and money were understood. England ended all taxation on Americans for fear of rioting and the murder of governors of the colonies. The aristocrats just could not live on equal ground with the "peasants" so they stated that they were going to create a 3 pence on the pound tax, only on tea. For no other reason then they wanted to. The towns people were outraged by the purpose of the tax, not the actual cost or burden of the tax. And they started the Boston Tea Party.

The reason England ended taxation was because they had just put the colonists through immense poverty, using the French and Indian War. That was only done to make the colonists more controllable. The French were just a convenient tool to do their bidding. It made poor colonists more willing to listen to idiots that had money.

Now with the colonists new knowledge of money, the aristocratic idiots seemed more like the aristocratic idiots they were. You need not listen to aristocratic idiots if you have some money in your pocket. 

You do not know the story of body armor. Body armor was kept from law enforcement for fear of one man or a small group of men getting their hands on some, and taking out officials, protected by United States Treasury department agents. And for fear of bank robberies. Our boys could have been wearing body armor in World War One. But it was deemed too dangerous a weapon for citizens to posses.

It took a priest to demonstrate the silk body armor he created, on himself. To finally get it approved for use by policemen against gangsters in Chicago. Rick Davis has that kind of similar story, he had the balls to get-er-done. While others were talking, and not producing anything for the boys in the field, Rick Davis was supplying life saving body armor to police, at prices they could afford. There were people on both sides of the debate. Since Rick is not having lunch with bank presidents that just wrote themselves multibillion dollar retirement packages, I don't think he deserves to be put into a bad light. 

To this day he and his son, work on body armor together. It is easy to attack indiviuals doing real things, difficult things. It is hard to attack people that do nothing, and have nothing to give. 

                      Sincerely,

                            William McCormick
 

Offline William McCormick

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Re: What are the physics of bullet proof vests?
« Reply #7 on: 03/09/2012 20:12:25 »
I was talking about the lack of movement by the fellow being hit by the round, not the vests longevity.

If, say, hypothetically, the video was a faked demonstration with only a little gunpowder in the bullets, then there would be little recoil on the guns and little impact on the demonstrators from the light load bullets.  Then independent testing with full load bullets would show the vests were not as protective as advertised, which was the case ... http://www.thenakedscientists.com/forum/index.php?topic=45382.msg396014#msg396014

Apparently "second chance" was not an ethical company ...
Quote
Dr. Westrick worked as the research chief for Second Chance, but was removed from managerial responsibilities after he recommended that the company inform its customers that the vests were defective. He was terminated by Second Chance once the company learned that Westrick has provided documents to the Department of Justice that documenting corporate greed over protecting the lives of police officers. Specifically, Westrick provided documentation that continued sale of the vests would result in the loss of life. Despite these warnings, the company continued selling the vests.
http://www.whistleblowers.org/index.php?option=com_advancedtags&view=tag&id=19

http://www.rockwelder.com/wmv/WildBill.wmv

This is a Wassa firing a pretty hefty round that will go through many layers of a welding blanket, a plastic bin holding the metal, and then blunted, the round will still go through about seventeen layers of 22 gauge sheet metal with spaces between them. Pretty much again and again. Very repeatable. Do you see much recoil? Do you see much kinetic energy applied to my body?

The gun hardly kicks. Yet that round penetrates steel nicely. It is all an electrical effect. The energy required to punch a half inch hole, in sheet metal, with a blunt object, in seventeen pieces of sheet metal, is far more energy then is being applied to my body. Get out there and check this stuff out. You will realize that governmental science is not your friend. Semi conductors are not being built to bring you knowledge or a better life. They are a drug a false promise, to lure you from reality. Just like black and white TV saving the world from ignorance was a lie.


                      Sincerely,

                            William McCormick
 

The Naked Scientists Forum

Re: What are the physics of bullet proof vests?
« Reply #7 on: 03/09/2012 20:12:25 »

 

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