Mechanically Joined Acoustic Core Segments with Splicing Resonant Cells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing acoustic core assemblies with mechanically joined segments often suffer from reduced noise dampening performance due to seams filled with foam adhesive or mechanical components that interfere with resonant cells, and assembly processes can be cumbersome and insecure.
Innovation Solution
The use of splicing resonant cells with overlapping and aligning cell walls to form splice joints, combined with fastening elements that couple corresponding cells, creating coupled resonant cells that maintain acoustic activity while allowing for easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If foam adhesive is used to bond acoustic core segments, then the segments are securely joined, but the resonant cells are filled and acoustic dampening performance deteriorates
Solution Approach 1:
The patent removes the foam adhesive entirely from the bonding process. Instead, it uses mechanical fastening elements (clips, tabs, interlocking features) to join acoustic core segments without filling the resonant cells, thereby extracting the harmful substance while maintaining secure bonding.
Solution Approach 2:
The patent introduces mechanical fastening elements as intermediaries between acoustic core segments. These fasteners (clips, tabs, interlocking features) serve as mediators that provide secure bonding without interfering with the acoustic function of the resonant cells.
2Strength
If mechanical components are added to bind acoustic core segments, then secure joining is achieved, but the resonant cells are interfered with and acoustic dampening performance deteriorates
Solution Approach 1:
The patent applies local quality by designing fastening elements with specific geometries (clips, tabs, interlocking features) that are localized to specific regions of the acoustic core segments. These fasteners are positioned and shaped to provide secure bonding only where needed, without interfering with the resonant cells in the acoustic path.
Solution Approach 2:
The patent uses thin, flexible fastening elements (clips, tabs) that can deform during assembly and then lock into place. These thin-film-like fasteners provide secure bonding while being thin enough to minimize interference with the acoustic field and resonant cell functionality.
3Strength
If conventional mechanical bonding systems are used, then segments are joined, but the assembly process becomes cumbersome and time consuming
Solution Approach 1:
The patent segments the bonding function into simple, discrete fastening elements (clips, tabs, interlocking features) that can be independently manufactured and assembled. This segmentation allows for parallel assembly operations and reduces the complexity of the overall bonding process, thereby improving productivity.
Solution Approach 2:
The patent incorporates preliminary action by pre-forming the fastening elements (clips, tabs, interlocking features) during the manufacturing of acoustic core segments. These pre-formed fasteners are ready for immediate assembly, eliminating the need for complex bonding operations during the assembly process and significantly improving assembly speed.
4Productivity
If conventional mechanical bonding systems are used, then segments are joined, but the assembly process is insecure and may not sufficiently secure the segments
Solution Approach 1:
The patent employs dynamic fastening mechanisms where clips and tabs deform during assembly and then lock into place, creating a secure mechanical interlock. This dynamic behavior allows for simple assembly operations while ensuring that the joints are securely locked and cannot easily fail during service.
Solution Approach 2:
The patent uses curved or angled geometries in the fastening elements (clips, tabs, interlocking features) that create mechanical interference and locking effects. These curved geometries provide secure joints through geometric interlocking, ensuring that segments remain firmly connected during vibration and thermal cycling.
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 solution enhances the noise dampening performance by avoiding interference with the coupled resonant space and simplifies the assembly process, ensuring secure and efficient coupling of acoustic core segments while maintaining acoustic effectiveness.
Implementation Method 1
acoustic core segments that have an array of resonant cells... intended to dampen or attenuate sound waves
Implementation Method 2
The acoustic core includes a plurality of resonant cells intended to dampen or attenuate sound waves
Implementation Method 3
At least some of the splicing resonant cells include one or more fastening elements configured to couple with a corresponding at least some of the counterpart splicing resonant cells
Data Source
AI summary
Acoustic core segments include splicing resonant cells that resemble a first segment of a whole resonant cell configured to overlap and align with counterpart splicing resonant cells of another acoustic core segment so as to define a splice joint. The splicing resonant cells include one or more fastening elements configured to couple with corresponding counterpart splicing resonant cells thereby together defining coupled resonant cells. Acoustic liners have an acoustic core assembly that includes a first acoustic core segment mechanically joined with a second acoustic core segment by a combination of splicing resonant cells of the first acoustic core segment overlapping and aligning with splicing resonant cells of the second acoustic core segment so as to define a splice joint, and a plurality of fastening elements coupling splicing resonant cells of the first acoustic core segment with splicing resonant cells of the second acoustic core segment.