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Expanding the Vision of Sensor Materials (1995) / Chapter Skim
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APPENDIX C: AN ILLUSTRATIVE SENSOR TAXONOMY
Pages 108-113

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From page 108...
... Deformation of this element as a result of a tensile or compressive force results in a change in electrical resistance. The various signal energies that are used in modulating transducers include photoconcluctive, magnetoresistive, thermoresistive, electrically conductive, or piezoresistive ones.
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From page 109...
... For example, the Tong-wavelength infrared detectors discussed in Chapter 5 depend upon the use of semiconductor materials that can efficiently absorb radiation in the wavelength band of 8 to 14 microns; this requirement necessitates the use of sensor materials with band gaps less than about 130 MeV. Figure C-5 shows that sensitivity requirements for sensors used in materials processing depend not only upon the signal energy magrutude and form, as discussed above, but also on the scale of the material property to be measured.
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From page 110...
... Applications of this type are discussed in Chapter 3 in the context of intelligent processing of polymer matrix composites, and the requirement for noninvasive monitoring of composite cure is identified as a major driver for the development of new sensor types. The use of optical sensing technologies is particularly promising for such noninvasive sensing applications.
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From page 111...
... Sensor Scale Of Measured Properties , Nanostructure e.g.,atomic constituents, point defects, interfaces Microstructure e.g.,solid state reactions, fracture nucleation -Millistructure e.g., phase assemblies, densification Macro structure e.g., metrology ~1 Self Generating Modulating FIGURE C-5 Correlation of sensor sensitivity with property measurement scale.
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From page 112...
... Washington, D.C.: National Academy Press. NRC (National Research Council)
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From page 113...
... Washington, D.C.: National Academy Press. NRC (National Research Council)
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Key Terms

  • response time
  • materials processing
  • sensor response
  • matrix composites
  • composite cure

  • health monitoring
  • intelligent processing
  • constraints associated
  • materials advisory
  • semiconductor materials

  • national materials
  • sensor materials
  • sensor applications
  • measurement scale
  • sensing applications

  • piezoresistive element
  • processing arises
  • frequently performed
  • hostile manufacturing
  • sensing requirements

  • nanostructural features
  • material property
  • personal health
  • powder production
  • mechanical energy

  • environment associated
  • elevated temperature
  • sensitivity requirements
  • nondestructive characterization
  • composite processing


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