Measurement Techniques for Data Recording and High Temperature Measurement

Abstract

The Defense Threat Reduction Agency (DTRA) performs a wide variety of High Explosive (HE) blast events, supporting the War Fighter, Weapons of Mass Destruction (WMD) mitigation, characterization, international anti-terrorism mitigation, force protection, and agent defeat. United States Government agencies rely on these tests to gather useful data in the field and for laboratory use. The paper presented here addresses: (1) instrumentation design and, (2) high temperature data acquisition. The Instrumentation design includes cable planning and layout, sensor selection (pressure, thermal response, acceleration, velocity, displacement, strain, and force), sensor calibration and fielding, data acquisition, long range transmission and storage of data signals, and high speed optical data. DTRA has also internally developed two fast response high temperature measurement systems that can sustain a harsh environment of up to 500 psi, and both with the capability of measuring temperatures in excess of 3000 Kelvin with a response time of 300 MicroSec. The first system is a Near Infra Red (NIR) ratio pyrometry four color system which is completely self contained (detectors, conditioning electronics in same unit), and the second system is also a NIR low cost ratio pyrometry system that uses an expendable front end mounting configuration that secures fiber optic cables (each of which are assigned a specific narrowband IR center wavelength) in a specific measurement location. These fiber optic cables convey the infrared data produced by the fireball or other thermal event to a separate array of physically protected NIR photo detectors whose data signals are then conditioned, recorded and, processed to provide fireball or other thermal event temperatures.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2010
Accession Number
ADA560461

Entities

People

  • Howard Ross
  • Kiran Shah

Organizations

  • Defense Threat Reduction Agency

Tags

Communities of Interest

  • Counter WMD
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Bandwidth
  • Blast
  • Calibration
  • Data Acquisition
  • Detection
  • Detectors
  • Electronics
  • Frequency
  • High Explosives
  • High Temperature
  • Instrumentation
  • Measurement
  • Narrowband
  • Recording Systems
  • Weapons Of Mass Destruction

Readers

  • Explosive Engineering.
  • Spectroscopy.
  • Thermal Physics or Thermal Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems