Remanent Magnetization Profile for Rock Breaking Stress Wave Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rock breaking systems face challenges in accurately measuring stress waves during rock breaking due to disturbances caused by external magnetic fields used for magnetizing components, which affect the reliability of stress wave measurement results.
Innovation Solution
A rock breaking system component is magnetized into a state of remanent magnetization with a predetermined varying magnetization profile, allowing for accurate measurement of magnetoelastic changes without the need for external magnetic fields, thereby simplifying instrumentation and enhancing measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external magnetic fields are used to magnetize components during stress wave measurement, then the component can be put into a magnetic state for measurement, but disturbances are caused in the measurement results
Solution Approach 1:
The component is magnetized into a state of remanent magnetization before the stress wave measurement process. This preliminary magnetization eliminates the need for external magnetic fields during measurement, thereby avoiding measurement disturbances while maintaining reliable stress wave detection capability
Solution Approach 2:
The magnetization function is extracted from the measurement process. Instead of applying external magnetic fields during measurement, the component retains permanent magnetization, separating the magnetization step (performed beforehand) from the measurement step (performed without external fields)
2Ease of manufacture
If uniform magnetization is applied to the component, then the component is easily magnetized, but measurement accuracy is reduced due to lack of detectable magnetoelastic changes
Solution Approach 1:
The component is designed with non-uniform magnetization distribution, creating specific regions with different magnetization intensities (including peak points and gradient regions). This local variation in magnetic properties enhances the detectability of magnetoelastic changes caused by stress waves, thereby improving measurement accuracy
3Measurement precision
If complex instrumentation is used to provide specific magnetic states during measurement, then accurate stress wave measurement can be achieved, but device complexity increases and causes disturbances
Solution Approach 1:
The component itself serves as the magnetic field source through its remanent magnetization. The permanently magnetized component generates the necessary magnetic field for magnetoelastic measurement without requiring external magnetizing coils or complex instrumentation, thereby simplifying the overall measurement system
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
This approach eliminates disturbances from external magnetic fields, improves measurement accuracy by optimizing sensor placement at peak magnetization points, and enables more reliable monitoring and control of rock breaking operations.
Implementation Method 1
measuring magnetoelastic changes caused by stress waves in a component of the rock breaking system
Data Source
AI summary
A component for a rock breaking system is magnetized into a state of remanent magnetization. The remanent magnetization of the component has a predetermined varying magnetization profile relative to geometry of the component, the varying magnetization profile describing varying magnetization intensity in the component relative to the geometry of the component.