The developing process of bulletproof helmet

Bulletproof helmets are necessary equipment for soldiers to protect their heads during combat. Then how did the bulletproof helmets come into being and how did they evolve? The following is a brief introduction.

In a shelling of World War I, a cookhouse soldier survived from the artillery attack with an iron pot on his head, which has promoted the birth of Adrian helmet of France subsequently. But the original helmets are made of ordinary simple metal, with simple technics, and can only resist the fragments of shells without resistance to bullets. In the following decades, with the development of technology, helmet has also made progress and development. The emergence of bulletproof steel makes the development and application of bulletproof helmets possible. Bullet-proof steel has many advantages such as good toughness, high strength and strong resistance. To some extent, the helmet made of bullet-proof steel can resist the frontal fire of some pistol bullets. In the late 20th century, the manufacturing process of helmet has been constantly improved, and more and more materials have been discovered and used, such as Aramid (also named Kevlar) and PE. Aramid, also known as Kevlar was born in the late 1960s. It is a new high-tech synthetic fiber with strong high-temperature resistance, great anticorrosion, light weight and great strength. By virtue of these advantages, it has replaced bulletproof steel gradually in the bulletproof field. The bullet-proof helmet made of new materials perform much better in stopping bullets, and more and more humanized in design. Its working principle is that the impact of bullets or fragments against the fiber layer will develop into tensile force and shear force, during which the impact force produced by bullets or fragments can be dissipated to the periphery of the impact point, and finally, the bullets or fragments are stopped. In addition, the helmet suspension system is also a contributor to its great protection performance. The suspension system can reduce the tremendous vibration caused by bullets or fragments, decreasing the damage of head from vibration. Its working principle is that the suspension system keeps the head of the soldier from touching the helmet directly, so that the shock generated by bullets or fragments will not be transmitted directly to the head, thus reducing the damage of head. This design is now also used in civilian helmet. However, it should be noted that even though the material has been greatly improved, and the process design has become increasingly perfect, most modern military helmets can only prevent stray bullets, fragments, or small caliber pistols, with limited protection capability of medium power rifle. Therefore, the so-called bullet-proof helmet actually has limited bullet-proof function, but its fragments-proof and bullet-proof function cannot be ignored.

Above is all the introduction of bulletproof helmets.