Shot Peening Measurement via Simulation Fixture
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Solution Overview
Problem
Conventional shot peening processes struggle to accurately measure and control the intensity and coverage on metal components with complex geometries, leading to inconsistent metallurgical properties and structural characteristics.
Innovation Solution
A method involving the creation of a solid model of the metal component, identification of specific surface locations for structural property measurement, and fabrication of a simulation fixture with Almen strip holders to simulate and fine-tune the shot peening process, ensuring precise measurement and adjustment of peening intensity and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional shot peening processes are used on complex geometry components, then the process can be applied to various shapes, but the measurement precision of peening intensity and coverage deteriorates
Solution Approach 1:
The patent creates a simplified simulation fixture that copies only the essential geometric features needed for accurate peening measurement. Instead of peening the complex actual component, a simplified model with representative surfaces is used, allowing precise Almen strip placement and measurement while maintaining adaptability to different component geometries through modular fixture design.
Solution Approach 2:
The patent introduces Almen strips as intermediary elements between the shot peening process and the measurement system. These strips serve as standardized mediators that can be precisely positioned on simulation fixtures, translating the complex peening process into measurable deflection values while maintaining measurement precision independent of the actual component geometry.
2Measurement precision
If multiple test strips are used to measure different locations on complex components, then measurement coverage improves, but device complexity increases
Solution Approach 1:
The patent divides the measurement system into modular segments: multiple independent Almen strip holders that can be separately positioned and configured on the simulation fixture. Each holder is a simple, standardized unit that can be independently adjusted to specific locations, allowing comprehensive coverage measurement without creating a single complex integrated device.
Solution Approach 2:
The patent performs preliminary positioning and configuration of Almen strip holders on the simulation fixture before the actual shot peening process. Locations are pre-determined and holders are pre-positioned based on the simulation model, eliminating the need for complex real-time adjustments during peening and simplifying the overall device operation.
3Strength
If repetitive shot peening processing is performed to achieve desired metallurgical properties, then structural properties improve, but loss of time increases
Solution Approach 1:
The patent performs preliminary shot peening tests on simulation fixtures with Almen strips to establish optimal peening parameters before actual production processing. By pre-determining the correct intensity, coverage, and process parameters through rapid simulation testing, the need for repetitive trial-and-error processing on actual components is eliminated, significantly reducing total processing time while ensuring desired metallurgical properties are achieved.
Solution Approach 2:
The patent uses simulation fixtures that replicate the essential peening characteristics of actual components, allowing rapid parameter optimization through copying the critical geometric features. This enables quick establishment of optimal peening parameters without repeatedly processing actual valuable components, reducing time loss while ensuring the desired structural properties are achieved in production.
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 allows for efficient and economical establishment of optimal shot peening parameters, reducing the need for repetitive processing and enabling precise impartation of specified metallurgical capabilities and structural properties on complex geometry surfaces, thereby enhancing the component's performance and reliability.
Implementation Method 1
Peening intensity is a function of the kinetic energy of the shot impacted upon the surface of the component. In summary, it is a function of shot velocity and size.
Implementation Method 2
Shot peening comprises impacting a surface of the subject metal component with round metallic, glass, or ceramic particles, commonly referred to as 'shot.'
Implementation Method 3
Almen strips deflect in response to the surface compression produced by shot impacts. One impact causes some deflection of the strip toward the side struck. As the impacts accumulate, the deflection increases.
Data Source
AI summary
A method for measuring a metal surface treatment of a metal component includes creating a solid model of the metal component, identifying surface locations on the metal component at which a set of structural properties is specified by design, and identifying a simulated location on the solid model corresponding to the identified surface location on the metal component. The method includes preparing a simulation fixture plan for fabricating a simulation fixture having an element for supporting a test strip holder thereon at the identified simulated location, and then fabricating the simulation fixture. A test strip holder is positioned at the identified simulated location on the simulation fixture, and a test strip is positioned in the test strip holder. The simulation fixture is subjected to the metal surface treatment wherein the simulation fixture has the test strip holder positioned thereon and the test strip holder has the test strip positioned thereon.