Mechanical Property Measurement Using Multi-Feature Model Selection
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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 complex relationship between electromagnetic feature values and mechanical properties, leading to variations in measurements even for materials with the same properties.
Innovation Solution
A mechanical property measuring apparatus that includes a physical quantity measuring unit, a classification processing unit, and a mechanical property calculating unit, which measures multiple physical quantities, selects appropriate calculation models based on these quantities, and calculates the mechanical properties of steel materials, accounting for the influence of surface films.
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 accuracy deteriorates due to the complex and variable relationship between electromagnetic features and mechanical properties
Solution Approach 1:
The patent changes the parameters used for measurement by introducing multiple physical quantities (electromagnetic feature values, acoustic feature values, and process feature values) instead of relying on a single electromagnetic parameter. This multi-parameter approach compensates for the variability and complexity of the electromagnetic-mechanical property relationship, thereby improving measurement accuracy while maintaining non-destructive measurement capability
Solution Approach 2:
The patent creates a composite measurement model that integrates multiple types of feature values (electromagnetic, acoustic, and process features) to form a comprehensive assessment system. This composite approach combines the strengths of different measurement methods and compensates for the weaknesses of individual parameters, resolving the contradiction between non-destructive measurement and accuracy
2Measurement precision
If multiple physical quantities are measured to improve accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent designs a measurement system that uses a single integrated apparatus capable of measuring multiple physical quantities (electromagnetic features, acoustic features, and process features). This multi-functional device performs various measurement tasks simultaneously, improving measurement precision while avoiding the need for multiple separate devices, thus limiting the increase in device complexity
3Device complexity
If conventional single-parameter measurement is used, then device complexity remains low, but measurement precision deteriorates due to film influence and property variations
Solution Approach 1:
The patent applies local quality by selectively using different feature values and calculation models based on the specific measurement conditions, such as the presence and thickness of surface films. The system adapts the measurement approach to local characteristics of the steel material, improving precision without requiring complete system redesign for every scenario
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 and non-destructive measurement of mechanical properties, improving production yield and ensuring high-quality steel materials by accounting for the film's influence on electromagnetic features.
Implementation Method 1
applying an alternating magnetic field to a metal material and detecting induced eddy current
Implementation Method 2
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; a substance manufacturing equipment and method that can improve the production yield rate. 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 classification processing unit (81) configured to select one of a plurality of calculation models (M1, M2, . . . , Mn) for calculating a mechanical property of the substance, based on at least two of the plurality of physical quantities measured; and a mechanical property calculating unit (82) configured to calculate the mechanical property of the substance using the calculation model selected by the classification processing unit (81) and the at least two of the plurality of physical quantities.