Dein erstes Forum » The Testing Process for Body Armor

The latest business strategy that the Window makers adopt to promote their product is to make windows replacement looks like a very simple process. For this Richaun Holmes Womens Jersey , they have are promoting the readily available windows replacement kit in the market. But then, before getting carried away by the magic words of these people, think twice if you can replace the window yourself? Are you sure??


And if you didn’t know, replacement windows Kansas City were a concept that was designed to replace any window assembly that was installed to replace a rope and pulley window. They can consist of just two new duplicate sashes and a set of spring-loaded jamb liners or a complete assembly including casing, and exterior trim cladding. All of them depend on suspension systems consisting of various combinations of springs, strings and plastic things.


Ask a carpenter or an Architect and he would tell you the procedure on windows replacement and what are the skills required to perfect the art of windows replacement. You do not want to start up the work of replacing the windows yourself and end up thinking that you could have stuck to your good old window!!


What could possibly be the problem? Let us take a typical example where you need to replace or fix a double insulated glass window. This means there are two panes of glass in each sash. Since glass accounts for most of the weight of your Kansas City windows Josh Jackson Womens Jersey , you have now doubled the weight of each component. If any of the springs, strings and plastic things should fail, you have a window twice as dangerous as an old one! And, the insulated seals are subject to failure, and when they do they “fog“ (develops a white residue which makes the window opaque).


Another classic example could be the Spring loaded windows. A spring loaded suspension system has a serious flaw. All the time the window is closed, the springs are at full extension Tyler Johnson Womens Jersey , such as all winter! How long it will take those springs to lose most of their tension depends on the quality of their construction, and the weight of the sash. But lose it they will, sooner or later, and when they do, you’ll have a top sash that won’t stay up and a bottom that won’t open very far. This is not a fun window to live with!


And then there are the claims of “energy efficiency“ and big savings on your heating bills... what they don’t tell you is that this same efficiency and these same savings could usually be obtained with exterior caulking, or new storms Jamal Crawford Womens Jersey , or weather-stripping. The fact is that “R-Value“ is based on the assumption that each pane of glass is worth one R. Therefore, two panes of glass equal two “R’s“ whether they are in an old window or a new one! So, if you have a good storm window, and your original windows close and lock, they are worth just as much in “R-Value“ as a brand new, double insulated tilt sash window!


When replacement windows people claim substantial energy savings George King Womens Jersey , they may be basing them on comparing their window to yours without a storm (an unfair comparison), or on the reduction of infiltration by “cladding“ the exterior trim, which could be duplicated with a tube of caulking!


A Look Back into the History of Body Armor Technology Articles | June 6, 2011
As long as there have been humans, there has been a need for body armor. Initially, body armor was little more than leather and hides. Over time Elie Okobo Womens Jersey , this was improved by attaching metal plates or rivets to leather.

This was further refined by ancient societies, and eventually resulted in the suit of metal plate armor worn by medieval knights. Today, body armor is still important, though it has changed considerably from what it once was.



Modern Body Armor


Modern armor can be classified into two distinct categories: hard and soft. Hard armor is quite similar to what was worn by knights - it is basically a system of metal or ceramic plates, and is worn by police officers and others only when there is a high chance of an attack. Soft armor, on the other hand Deandre Ayton Womens Jersey , is ideal for everyday use by those who are at risk of being attacked. Soft armor can be worn like clothing, and is available in a variety of different types, including concealable body armor, and vests that are made to be worn over other clothing.


Differences in Soft and Hard Body Armor


As mentioned, hard armor is a system of ceramic or metal plates. Soft armor, on the other hand T.J. Warren Womens Jersey , is a cloth-like material designed to capture a bullet and dissipate the impact force through a netting material across the entire surface of the armor. The most common example of soft body armor is the modern bullet proof vest worn by most police officers, either beneath or over their clothing.


Hard armor is cumbersome and heavy. Even ceramic plates, which are far lighter than their metallic counterparts, can be heavy if a full suit of armor is worn. Ceramic plates generally weigh close to six pounds each. It is also bulky, and makes doing things like driving difficult, which is why officers only wear it when there is a specific threat that needs to be protected against (such as during riot protection and similar actions).


The Testing Process for Body Armor


In order for any type of armor to be certified as bullet resistant (no armor is technically bulletproof) Kelly Oubre Jr. Womens Jersey , it must undergo rigorous testing by the National Institute of Justice and their laboratories. This is especially important for new designs - Kevlar is not the only material used to create bullet proof vests. There is also Spectra, Twaron, and Gold Shield also known as Gold Flex. All these different fibers have incredible ballistic abilities.


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