Optical pressure measurements in behind armour blunt trauma experiments
conference paper
An important cause for the occurrence of behind armour blunt trauma (BABT) is an intense pressure wave through the human tissue caused by
the impact of a bullet on body armour. The peak pressure of this wave is measured in a tissue simulant with an optical method. This is done by making high speed photographs of a rectangular grid placed behind the tissue simulant. Therefore, the light which creates the image goes through the tissue stimulant and the image of this grid becomes distorted. This distortion is caused by a local change in refractive index in the tissue simulant, as a result of the transmitted pressure wave. Because of this change in refractive index, light is refracted and the image is distorted. By analyzing the distortion of the rectangular grid, we were able to determine the change in refractive index and subsequently the change in pressure.
the impact of a bullet on body armour. The peak pressure of this wave is measured in a tissue simulant with an optical method. This is done by making high speed photographs of a rectangular grid placed behind the tissue simulant. Therefore, the light which creates the image goes through the tissue stimulant and the image of this grid becomes distorted. This distortion is caused by a local change in refractive index in the tissue simulant, as a result of the transmitted pressure wave. Because of this change in refractive index, light is refracted and the image is distorted. By analyzing the distortion of the rectangular grid, we were able to determine the change in refractive index and subsequently the change in pressure.
TNO Identifier
183183
Source title
21st International Symposium on Ballistics, Adelaide, South Australia, 19-23 April 2004
Files
To receive the publication files, please send an e-mail request to TNO Repository.