Applied research in remotely queried embedded microsensors

Donald G. Krantz, John H. Belk, Joel Dubow, Charles Hautamaki, Susan C. Mantell, Dennis L. Polla, Shayne M. Zurn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

Sensors embedded in structural composites have been a topic of research in recent years. Embedded sensors can be used to monitor and optimize the manufacturing process, to monitor performance during use, and for structural health monitoring in high-performance applications. For several years, embedded optical fibers were the predominant type of sensor. There are well-known reasons that optical fiber sensors have not yet been fully embraced in industry including primarily the cost of equipment and sensors, the fragility of the optical fiber itself, and the need to provide ingress and egress from the structure. Recent work by the authors and others has produced prototype wireless electronic sensors of various types that address these shortcomings. The US Office of Naval Research is funding a multi-disciplinary team to consolidate progress made in earlier programs towards self- contained microsensors to be embedded in a composite structure and queried using methods that do not require physical connections. The sensors are to be left in place for the lifetime of the structure, are powered by the querying apparatus, and require no penetrations through the surface of the structure. This paper describes the integrated approach taken to realize the goal of an interrogatable strain rosette that is embedded 0.25″ into a graphite composite plate. It also describes the progress to date of the sensor system itself.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages124-132
Number of pages9
Volume3328
DOIs
StatePublished - 1998
EventSmart Structures and Materials 1998: Smart Electronics and MEMS - San Diego, CA, United States
Duration: Mar 2 1998Mar 2 1998

Other

OtherSmart Structures and Materials 1998: Smart Electronics and MEMS
CountryUnited States
CitySan Diego, CA
Period3/2/983/2/98

Keywords

  • Embedded sensors
  • Micromachines
  • Microsensors
  • Remotely-queried
  • Remotely-queried sensors
  • Smart structures
  • Strain gages
  • Strain sensors

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