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Title: Passive blast pressure sensor

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.

Inventors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1083040
Patent Number(s):
8,397,551
Application Number:
12/770,983
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

King, Michael J., Sanchez, Roberto J., and Moss, William C. Passive blast pressure sensor. United States: N. p., 2013. Web.
King, Michael J., Sanchez, Roberto J., & Moss, William C. Passive blast pressure sensor. United States.
King, Michael J., Sanchez, Roberto J., and Moss, William C. 2013. "Passive blast pressure sensor". United States. https://www.osti.gov/servlets/purl/1083040.
@article{osti_1083040,
title = {Passive blast pressure sensor},
author = {King, Michael J. and Sanchez, Roberto J. and Moss, William C.},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/1083040}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 19 00:00:00 EDT 2013},
month = {Tue Mar 19 00:00:00 EDT 2013}
}

Works referenced in this record:

Blast pressure gauge
patent, August 2005


Blast Gauge
patent, February 1959


Protective helmet
patent, October 2001


Pervasive embedded systems for detection of traumatic brain injury
conference, June 2009


Impact gauge
patent, December 1980


Shock force indicating device
patent, February 2005


Bidirectional shock sensor
patent, November 1988


Time Differentiating Passive Impulse Gage
patent, October 1973


Plunger and transparent indicator
patent, February 1985


Pressure checker
patent, May 1991


Hose fatigue indicator
patent, March 1998