Multi-Field Coupling Loading Method for Extreme Condition Testing
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Solution Overview
Problem
Existing electro-magneto-thermo-mechanical synchronous loading devices cannot effectively handle multi-field coupling extreme conditions, such as high electric and magnetic fields, rapid temperature rises, and extreme stresses, which are necessary for testing materials under extreme electromagnetic energy conditions.
Innovation Solution
A method involving a test setup with a rotating body, a pulse power supply, and a pressure device, where a test object is subjected to maximum pulse current, high-speed rotation to generate friction heat, and synchronized pressure application to create extreme force conditions, allowing for real-time measurement and control of current, temperature, stress, and electromagnetic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing electro-magneto-thermo-mechanical synchronous loading devices are used, then partial synchronous loading can be realized in steady state or low parameter conditions, but they cannot achieve synchronous loading in multi-field coupling extreme conditions of electricity, magnetism, temperature and stress
Solution Approach 1:
The patent merges four independent loading systems (electrical loading, magnetic loading, thermal loading, and mechanical loading) into a single integrated synchronous loading device. The electrical loading unit applies high current, the magnetic loading unit generates strong magnetic fields, the thermal loading unit creates extreme temperature conditions, and the mechanical loading unit applies stress, all synchronized to simulate multi-field coupling extreme conditions that cannot be achieved by existing separate systems
Solution Approach 2:
The patent transitions from static or steady-state loading to dynamic synchronous loading by implementing real-time coordinated control of all four loading parameters. The system dynamically adjusts electrical current, magnetic field strength, temperature, and mechanical stress simultaneously to reproduce time-varying extreme conditions, enabling accurate simulation of transient electromagnetic energy effects on materials
2Power
If maximum pulse current is applied to achieve extreme electric and magnetic field conditions, then current density reaches 108 A/m2 and above, but temperature rise rate and strain rate also reach extreme levels (not less than 104 K/s and 104 s−1 respectively)
Solution Approach 1:
The patent implements real-time measurement and feedback control systems that continuously monitor electrical parameters (current, voltage), thermal parameters (temperature rise rate), and mechanical parameters (strain rate). Based on this feedback, the control system dynamically adjusts the pulse current waveform, duration, and intensity to achieve the desired electromagnetic energy levels while preventing excessive thermal and mechanical damage that would compromise the test object
Solution Approach 2:
The patent employs periodic pulse current application rather than continuous current, using controlled pulse widths and repetition rates. This periodic action allows the material to experience extreme electromagnetic energy in brief intervals while providing cooling periods between pulses, thereby achieving high current density (108 A/m2 and above) and temperature rise rates (104 K/s and above) without causing immediate catastrophic thermal damage
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 method enables synchronous and dynamic loading in electro-magneto-thermo-mechanical multi-field coupling conditions, effectively simulating extreme test environments and meeting the scientific research and test requirements for materials under extreme conditions.
Implementation Method 1
turning on the pulse power supply to apply maximum pulse current to the test object to realize loading under extreme electric field and magnetic field conditions
Implementation Method 2
realizing loading in an extreme-temperature field combined with Joule heat and arc heat
Implementation Method 3
driving the rotating body to rotate at a high speed, so that the rotating body rubs against the test object to generate friction heat
Implementation Method 4
realizing loading of the extreme force combined with the gravity and electromagnetic force of the rotating body
Implementation Method 5
realizing loading of the extreme force combined with the gravity and electromagnetic force of the rotating body
Data Source
AI summary
Disclosed is a synchronous and dynamic loading method in electro-magneto-thermo-mechanical multi-field coupling conditions. The method comprises the following steps: applying maximum pulse current to a test object by a pulse power supply to realize loading in extreme electric field and magnetic field conditions; meanwhile, generating a large amount of friction heat by the high-speed rotation of a rotating body and the friction of the test object to realize loading in an extreme-temperature field combined with a large amount of Joule heat and arc heat; synchronously applying pressure to the rotating body by a pressure device to realize loading of extreme force combined with the gravity of the rotating body and the friction force between the rotating body and the test object.