The very name of such materials seems to be taken from science fiction. Radar-absorbing materials (RAMs) are used mainly in the military industry. As you understand, they are what is used in stealth technology. However, this is not the only field in which they are applied.
Besides aircraft, such materials are used in submarines to make them invisible. It is interesting that such materials were already used in the Second World War. The Germans used them on their submarines. A RAM is a layered material. It consists of several layers, often seven layers of semiconducting paper filled with graphite. The thickness of this invisible “armour” was up to seven and a half centimetres.
Today there are three types of radar-absorbing materials, namely non-resonant bulk, resonant and non-resonant magnetic. The field of application of such materials is wide. Of course, they are used mainly in the military industry. For example, RAMs cover the radomes of the antennas of aircraft or missiles. They serve excellently even in extreme operating conditions (such as rain, dust, thermal shocks and so on).
But RAMs also have a peaceful use. For example, they are used in hospitals. These materials shield the rooms where various sensitive diagnostic or therapeutic instruments are installed. They can also be used in making windows where these are located directly near powerful antennas or other transmitting devices. They are used in accelerators and in various electronics. They serve as a partition that does not let electromagnetic radiation through.
RAMs can also be used to make special clothing for work in conditions of increased danger. If a person lives with a pacemaker, the waves that surround him can throw this device off and make it stop working. This threatens immediate death. For this reason underwear that shields against unwanted radiation can be made from RAMs. As you see, these materials have found many uses, from the military industry to everyday purposes.
Besides aircraft, such materials are used in submarines to make them invisible. It is interesting that such materials were already used in the Second World War. The Germans used them on their submarines. A RAM is a layered material. It consists of several layers, often seven layers of semiconducting paper filled with graphite. The thickness of this invisible “armour” was up to seven and a half centimetres.
Today there are three types of radar-absorbing materials, namely non-resonant bulk, resonant and non-resonant magnetic. The field of application of such materials is wide. Of course, they are used mainly in the military industry. For example, RAMs cover the radomes of the antennas of aircraft or missiles. They serve excellently even in extreme operating conditions (such as rain, dust, thermal shocks and so on).
But RAMs also have a peaceful use. For example, they are used in hospitals. These materials shield the rooms where various sensitive diagnostic or therapeutic instruments are installed. They can also be used in making windows where these are located directly near powerful antennas or other transmitting devices. They are used in accelerators and in various electronics. They serve as a partition that does not let electromagnetic radiation through.
RAMs can also be used to make special clothing for work in conditions of increased danger. If a person lives with a pacemaker, the waves that surround him can throw this device off and make it stop working. This threatens immediate death. For this reason underwear that shields against unwanted radiation can be made from RAMs. As you see, these materials have found many uses, from the military industry to everyday purposes.