Mechanical Property Measurement Using Multi-Frequency Eddy Currents
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Solution Overview
Problem
Conventional techniques face challenges in accurately measuring the mechanical properties of steel materials non-destructively due to the varying relationship between electromagnetic feature values and mechanical properties, making it difficult to ensure quality and production yield.
Innovation Solution
A mechanical property measuring apparatus and method that involves measuring multiple physical quantities, including electromagnetic feature values, using a combination of learning data and calculation models to accurately calculate mechanical properties, accounting for the influence of surface films on steel materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic feature values are measured to determine mechanical properties, then non-destructive measurement is achieved, but measurement precision deteriorates due to varying relationships between electromagnetic features and mechanical properties
Solution Approach 1:
The patent applies parameter changes by measuring multiple electromagnetic feature values at different frequencies (e.g., 100 Hz, 1 kHz, 10 kHz) and using these varied parameters as input to a calculation model. This allows the system to capture different aspects of the material's electromagnetic response, improving the accuracy of mechanical property determination while maintaining non-destructive measurement.
Solution Approach 2:
The patent creates a composite measurement approach by combining multiple electromagnetic feature values (different frequencies, phases, and amplitudes) into a unified calculation model. This composite methodology integrates various measurement dimensions to achieve accurate mechanical property assessment, similar to how composite materials combine different materials to achieve superior properties.
2Adaptability or versatility
If surface films are present on steel materials, then realistic production conditions are maintained, but measurement precision deteriorates due to film influence on electromagnetic signals
Solution Approach 1:
The patent implements feedback by measuring electromagnetic feature values across multiple frequencies and using these measurements to iteratively refine the calculation model. The system continuously adjusts the model parameters based on the observed electromagnetic responses, even in the presence of surface films, thereby maintaining measurement accuracy under realistic production conditions.
Solution Approach 2:
The patent introduces an intermediary calculation model that acts as a mediator between the electromagnetic measurements and mechanical property determination. This model compensates for the distorting effects of surface films by learning the relationship between electromagnetic signals and mechanical properties from training data, effectively filtering out the film-induced noise.
3Measurement precision
If multiple physical quantities are measured to improve accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a measurement system that uses the same sensor and excitation coil to measure multiple electromagnetic feature values across different frequencies. This multi-functional approach allows a single device to capture various physical quantities (amplitude, phase, frequency response) without requiring separate measurement systems for each parameter, thereby improving accuracy while limiting complexity growth.
Solution Approach 2:
The patent merges multiple measurement functions into a unified system where a single sensor assembly performs measurements at multiple frequencies and extracts multiple electromagnetic features. By combining these measurement capabilities in one integrated device rather than using separate instruments, the system achieves high measurement precision while keeping the overall device complexity manageable.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate, non-destructive measurement of mechanical properties, improving production yield and quality by generating precise calculation models based on selected physical quantities, effectively compensating for the influence of surface films.
Implementation Method 1
a sensor that measures electromagnetic feature values of the steel material surface layer
Implementation Method 2
applying an alternating magnetic field to a metal material and detecting induced eddy current
Data Source
AI summary
Provided are a mechanical property measuring apparatus and method that can accurately measure a mechanical property through physical quantities, etc. A mechanical property measuring apparatus (100) comprises: a physical quantity measuring unit (5) configured to measure a plurality of physical quantities of a measured object that includes a substance and a film on a surface of the substance; a calculation model generating unit (81) configured to select a plurality of pieces of learning data and generate a calculation model for calculating a mechanical property of the substance; and a mechanical property calculating unit (82) configured to calculate the mechanical property of the substance using the calculation model generated and at least two of the plurality of physical quantities, wherein the selection physical quantities include at least one physical quantity measured using a first measurement signal and at least one physical quantity measured using a second measurement signal.