Measuring device and method
The measuring device addresses inaccuracies in Biot parameter measurement by using a static load cell and closed-loop control for precise force and displacement determination, ensuring accurate and reproducible results for acoustic materials.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SZECHENYI ISTVAN EGYETEM
- Filing Date
- 2025-11-21
- Publication Date
- 2026-06-18
AI Technical Summary
Existing methods for measuring Biot parameters of acoustic materials, such as Young's modulus and Poisson's ratio, suffer from inaccuracies due to dynamic preload measurements, incorrect thickness/force-displacement curves, and indirect determination of Poisson's ratio, especially in inhomogeneous materials.
A measuring device with a static load cell, computer-controlled drive mechanism, and precise displacement control, combined with a camera for geometric measurement, ensures accurate force and displacement determination, enabling closed-loop control for reproducible loading conditions.
The device provides accurate and reproducible measurements of Biot parameters, including Young's modulus and Poisson's ratio, by eliminating uncertainties in preload measurement and accounting for material inhomogeneity.
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