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  • 1National Institute of Standards and Technology, 100 Bureau Dr Gaithersburg MD 20899.

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Summary
This summary is machine-generated.

We developed traceable transient pressure measurement infrastructure using a shock tube. This system characterizes photonic sensors in soft tissue phantoms, revealing microsecond-scale shock responses.

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Area of Science:

  • Metrology and Measurement Science
  • Biomedical Engineering
  • Materials Science

Background:

  • Accurate measurement of transient pressures is crucial for understanding soft tissue dynamics.
  • Existing infrastructure for traceable transient pressure measurements requires further development.
  • Photonic sensors offer potential for in-situ measurements within tissue phantoms.

Purpose of the Study:

  • To establish an infrastructure for traceable transient pressure measurements.
  • To characterize the dynamic response of photonic sensors embedded in polydimethylsiloxane (PDMS).
  • To validate the use of a dual diaphragm shock tube for reproducible shock generation.

Main Methods:

  • Construction and characterization of a dual diaphragm shock tube.
  • Generation of reproducible shocks with Mach speeds from 1.26 to 1.5.
  • Embedding photonic sensors in PDMS to create soft tissue phantoms.
  • Analysis of sensor response to transient shock events.

Main Results:

  • Achieved shock amplitude reproducibility of approximately 2.3 %.
  • Demonstrated that PDMS-embedded photonic sensors exhibit shock response dynamics on the microsecond timescale.
  • Confirmed the shock tube's capability for generating controlled transient pressure stimuli.

Conclusions:

  • The developed shock tube infrastructure enables traceable transient pressure measurements.
  • PDMS-embedded photonic sensors are suitable for studying transient pressures in soft tissue.
  • The system provides a foundation for advanced biomechanical studies of soft tissues.