Impact Test Apparatus Using Electromagnetic Acceleration
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Solution Overview
Problem
Existing impact test devices using air pressure require a large space to accelerate an impact body to a desired speed, limiting their use in confined areas and restricting acceleration accuracy.
Innovation Solution
An apparatus and method that combines air pressure and electromagnetic force to accelerate an impact body, allowing for two-stage acceleration and adjustable specimen positioning, enabling efficient acceleration in a limited space with improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a launcher using air pressure is used to accelerate the impact body, then the speed adjustment is facilitated and safety is improved, but a wide space is required for the compressed air to expand
Solution Approach 1:
The patent replaces the traditional air pressure expansion mechanism with an electromagnetic launching system. The electromagnetic force acts directly on the impact body through a launch tube to accelerate it to the desired speed, eliminating the need for large compressed air storage spaces while maintaining speed control capability and operational safety.
Solution Approach 2:
The patent changes the physical principle from pneumatic pressure expansion to electromagnetic force generation. By controlling electromagnetic parameters (current, magnetic field strength), the system achieves precise speed adjustment of the impact body without requiring large physical spaces for air expansion.
2Speed
If a launcher using gunpowder is used to accelerate the impact body, then the desired speed can be achieved, but safety is reduced and speed adjustment is difficult
Solution Approach 1:
The patent substitutes the dangerous gunpowder-based mechanical launching system with an electromagnetic launching system. The electromagnetic force provides controlled acceleration without the safety hazards of explosive materials, while enabling precise and repeatable speed adjustment through electrical parameter control.
3Volume of stationary object
If air pressure is used to accelerate the impact body in a limited space, then the apparatus volume is reduced, but acceleration accuracy is restricted
Solution Approach 1:
The patent employs an electromagnetic launching system that can achieve high acceleration accuracy within a compact space. The electromagnetic force can be precisely controlled through electrical parameters, enabling accurate acceleration control without requiring the large volumes needed for pneumatic systems to achieve the same level of precision.
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 easy acceleration of an impact body to a desired speed in a limited space with enhanced acceleration accuracy and flexibility in testing conditions, reducing the apparatus' volume and allowing for various test configurations.
Implementation Method 1
a compressed air module configured to provide an air pressure to the impact body in a direction in which the impact body is launched
Implementation Method 2
an electromagnetic force module configured to provide an electromagnetic force to the impact body in the direction in which the impact body is launched
Data Source
AI summary
The present disclosure relates to an apparatus and a method for an impact test, which can easily accelerate an impact body at a desired acceleration using an air pressure and an electromagnetic force. According to an embodiment of the present disclosure, an apparatus for an impact test includes a clamping unit configured to fix a specimen, and an impact unit disposed to be spaced apart from the clamping unit and configured to accelerate and launch an impact body to collide with the specimen by an air pressure and an electromagnetic force.