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DOE OSTI · 1083040

Passive blast pressure sensor

King, Michael J.·Sanchez, Roberto J.·Moss, William C.
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Abstract

A passive blast pressure sensor for detecting blast overpressures of at least a predetermined minimum threshold pressure. The blast pressure sensor includes a piston-cylinder arrangement with one end of the piston having a detection surface exposed to a blast event monitored medium through one end of the cylinder and the other end of the piston having a striker surface positioned to impact a contact stress sensitive film that is positioned against a strike surface of a rigid body, such as a backing plate. The contact stress sensitive film is of a type which changes color in response to at least a predetermined minimum contact stress which is defined as a product of the predetermined minimum threshold pressure and an amplification factor of the piston. In this manner, a color change in the film arising from impact of the piston accelerated by a blast event provides visual indication that a blast overpressure encountered from the blast event was not less than the predetermined minimum threshold pressure.

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BibTeXRIS

King, Michael J., Sanchez, Roberto J., Moss, William C.. 2013-03-19. Passive blast pressure sensor. https://www.osti.gov/biblio/1083040

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