Development and validation of a low magnetic permeability measurement setup

Area of Science:

• Materials Science
• Electromagnetism
• Metrology

Background:

• Relative permeability is crucial for assessing magnetic material suitability in industrial applications.
• Existing measurement methods often suffer from low accuracy, poor resolution, and high costs.
• Accurate measurement of feebly magnetic materials remains a challenge.

Purpose of the Study:

• To develop a precise and cost-effective measurement setup for relative permeability.
• To validate the new setup against established methods and standards.
• To enable accurate characterization of feebly magnetic materials.

Main Methods:

• Designed a measurement setup based on the flux metric (solenoid) method, adhering to ASTM A 342 and EN 60404-15 standards.
• Conducted comparative analysis using different flux meters to verify coil performance.
• Validated the setup against the vibrating sample magnetometer (VSM) for permeability measurements.

Main Results:

• The developed setup precisely measures relative permeability in the range of 1-2.
• Results showed close agreement between the developed setup and VSM data.
• The system demonstrated a relative error of less than 1% compared to VSM.

Conclusions:

• The new flux metric-based setup provides accurate and low-cost measurement of relative permeability.
• This system is a viable solution for measuring the permeability of feebly magnetic materials.
• The developed method offers improved accuracy and reduced cost over existing techniques.