Pocket-Filled Structural Elements for Flush Local Reinforcement
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Solution Overview
Problem
Existing methods for locally reinforcing structural parts through coating methods, such as cold gas spraying, often result in surface elevations that disrupt fitting, installation, and processing, and are sensitive to impact, failing to provide a reliable and effective process for producing structurally enhanced parts.
Innovation Solution
The method involves creating pockets in structural parts during or after production, which are then filled with coating material using techniques like cold gas spraying, allowing for a smooth surface that can be further processed and providing local reinforcement while protecting the material from impact, and enabling precise adaptation of geometry and material distribution for optimal loading and joining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If coating material is applied by thermal spraying method to locally reinforce structural parts, then the ability to bear mechanical loads is increased, but surface elevations are created that disrupt fitting and installation
Solution Approach 1:
The patent applies preliminary action by creating pockets (material recesses or reductions) in the structural part before applying the coating material. This pre-prepared geometry allows the coating to be deposited into a controlled space rather than forming uncontrolled elevations on the surface, thereby avoiding interference with fitting and installation while still providing local reinforcement.
Solution Approach 2:
The patent implements local quality by creating discrete pockets at specific locations where reinforcement is needed, rather than coating the entire surface. The coating material is deposited only into these localized pockets, providing targeted strength enhancement while maintaining the overall surface quality and fit of the structural part.
2Strength
If coating material is applied by thermal spraying method to locally reinforce structural parts, then the ability to bear mechanical loads is increased, but the coating becomes sensitive to impact
Solution Approach 1:
By pre-forming pockets with controlled geometry and depth before coating application, the patent creates a substrate structure that supports the coating material. This preliminary structural preparation allows the coating to be embedded rather than forming fragile surface elevations, significantly reducing sensitivity to impact while maintaining load-bearing capability.
3Strength
If coating material is applied by thermal spraying method to locally reinforce structural parts, then local stiffening is achieved, but the process complexity increases
Solution Approach 1:
The patent merges the pocket creation step with the coating application process. The pockets are formed as part of the structural part manufacturing (either during casting or through subsequent machining), and then the same thermal spraying equipment used for coating is utilized to deposit material into these pockets. This integration reduces overall process complexity compared to separate reinforcement and coating operations.
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 enables the creation of structurally enhanced parts with improved stiffness, reduced sensitivity to impact, and enhanced processing capabilities, allowing for precise adaptation to load cases and facilitating the joining of different materials while maintaining a uniform and protected surface.
Implementation Method 1
a process gas, such as for example nitrogen or helium, which has been heated to a few hundred degrees is accelerated to supersonic speed by expansion in a Laval nozzle and then the powder particles are injected into the gas jet
Implementation Method 2
The coating method is preferably cold gas spraying, this being a method in which the coating material is applied to the carrier material at a very high speed in powder form
Implementation Method 3
the injected spray particles are accelerated to such a high speed that they form a dense and firmly adhering layer upon impact with the substrate by comparison with other thermal spraying methods
Data Source
AI summary
A structural part includes a pocket where the pocket is formed during or after a production of the structural part. A coating material is disposed in the pocket where the coating material at least partially fills the pocket. A method for producing a structural part includes removing or reducing material in a portion of a structural part to produce or form a pocket during or after a forming of the structural part and filling the pocket with a coating material by a coating method.