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Related Concept Videos

Instrument Calibration01:12

Instrument Calibration

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Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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Related Experiment Video

Updated: Jul 2, 2025

Measurement of Spatial Stability in Precision Grip
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Research on the zero-calibration gauge device.

Zhichao Wu1, Furong Lei1, Linan Wang2

  • 1School of Optoelectronic Engineering, Xi'An Technological University, Xi'An, China.

Heliyon
|February 20, 2024
PubMed
Summary
This summary is machine-generated.

A new zero-calibration gauge device was designed for detecting track geometric parameters in high-speed train tests. Experimental results confirm its precision, with measurement uncertainties as low as 6 μm for height difference.

Keywords:
Gauge zero valueMeasurement uncertaintyParallelismZero-calibration gauge device

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Area of Science:

  • Mechanical Engineering
  • Metrology
  • Railway Engineering

Background:

  • Accurate detection of track geometric parameters is crucial for high-speed train operations and aerodynamic testing.
  • Existing equipment may not meet the precision demands for advanced train speed and aerodynamics research.

Purpose of the Study:

  • To design and validate a novel zero-calibration gauge device for precise track geometric parameter detection.
  • To ensure the reliability and accuracy of measurements for high-speed train testing applications.

Main Methods:

  • Design of a zero-calibration gauge incorporating centering limit, height adjustment, and horizontal display.
  • Analysis of the gauge's bending characteristics and optimization of processing technology.
  • Experimental testing of the gauge's zero value and working surface parallelism.

Main Results:

  • The gauge zero value was determined to be 1434.829 mm with a standard deviation of 1.4 μm.
  • Parallelism of the upper working surfaces measured at 1.1 μm, and inner surfaces at 4 μm.
  • Measurement uncertainty for gauge zero value is 12 μm, and for height difference is 6 μm.

Conclusions:

  • The designed zero-calibration gauge meets the required precision for track geometric parameter detection.
  • The device is suitable for demanding applications such as train speed and high-speed aerodynamics tests.
  • The validated design and experimental results confirm the gauge's rationality and realizability.