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Note: Manganin foil sensor for small uniaxial stress.

M K Frampton1, N McLaughlin1, Hu Jin1

  • 1Physics Department, University of California, Davis, California 95616, USA.

The Review of Scientific Instruments
|May 1, 2017
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Summary

This study introduces a simple manganin foil resistance manometer for precise uniaxial stress measurements across various temperatures. The device requires prestressing but avoids complex temperature seasoning for reliable low-pressure readings.

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Area of Science:

  • Materials Science
  • Physics
  • Engineering

Background:

  • Accurate measurement of uniaxial stress is crucial in various scientific and engineering fields.
  • Existing methods may require complex calibration or are limited in operational range.
  • Development of robust and simple stress measurement tools is an ongoing need.

Purpose of the Study:

  • To present a novel, simple manganin foil resistance manometer design.
  • To enable accurate uniaxial stress measurements at low pressures and varying temperatures.
  • To evaluate the operational limitations and performance characteristics of the manometer.

Main Methods:

  • Fabrication of a resistance manometer using manganin foil.
  • Testing the manometer's functionality under uniaxial stress at low pressures.
  • Investigating performance across a range of temperatures.
  • Assessing the impact of prestressing and pressure limits on measurement reproducibility.

Main Results:

  • The manganin foil resistance manometer demonstrates effective function at low pressures and diverse temperatures.
  • No temperature seasoning is required for the manometer's operation.
  • Prestressing to the upper pressure range is necessary, but limited by shear stress-induced irreversibility.
  • Exceeding pressure limits results in irreproducible resistance measurements.

Conclusions:

  • The developed manometer offers a simple and effective solution for uniaxial stress measurements.
  • The device is suitable for applications requiring low-pressure monitoring across different temperatures.
  • Understanding and respecting the prestress pressure limitations is key to ensuring measurement accuracy and reproducibility.