Anisotropic Plastic Reed Lamination for Tone Reproduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Resin-derived reeds lack anisotropy in rigidity, making it difficult to reproduce the tone of plant-based reeds, as they do not have varying rigidity in longitudinal and lateral directions, limiting their ability to produce a range of tones.
Innovation Solution
A reed is formed by laminating plastic sheets with anisotropic properties, where the elastic modulus in the longitudinal direction is greater than in the short direction, mimicking the anisotropy of plant-based reeds, allowing for the realization of various tones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If resin material is used to form reed, then manufacturing ease and consistency are improved, but anisotropy of rigidity is lost making it difficult to reproduce plant-based reed tone
Solution Approach 1:
The patent applies composite materials by laminating multiple plastic sheets together to create a reed structure. Each plastic sheet has anisotropic elastic modulus properties, and through controlled lamination with specific orientation arrangements, the composite structure achieves the desired anisotropy ratio (El/Es between 1.05-2.0) that mimics plant-based reeds while maintaining the manufacturing advantages of synthetic materials.
2Reliability
If plastic sheets are laminated to create anisotropy, then tone production capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent controls the anisotropy by adjusting parameters of the plastic sheets including elastic modulus values, sheet thickness, and lamination orientation angles. By changing these parameters systematically, the invention achieves the target anisotropy ratio (El/Es between 1.05-2.0) while providing a controllable manufacturing process that balances complexity with performance.
3Strength
If anisotropic plastic sheets are used, then rigidity control in longitudinal and short directions is improved, but material selection and processing difficulty increase
Solution Approach 1:
The patent applies local quality by creating different rigidity characteristics in different directions of the reed. The plastic sheets are laminated with specific orientations so that the longitudinal direction (El) and short direction (Es) have different elastic modulus values. This directional differentiation of material properties achieves the desired rigidity control while using standardized plastic sheet materials that remain relatively easy to process.
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
The anisotropic reed achieves similar tone production to plant-based reeds, enabling a range of sound generation by imparting desired rigidity to resin-derived reeds through lamination of plastic sheets with specific elastic modulus ratios.
Implementation Method 1
a reed for an aerophone, the reed including a plurality of plastic sheets laminated in a lamination direction perpendicular to a longitudinal direction of the reed
Implementation Method 2
an elastic modulus in the longitudinal direction of at least one plastic sheet of the plurality of plastic sheets is greater than an elastic modulus in a direction perpendicular to both the lamination direction and the longitudinal direction of the at least one plastic sheet
Implementation Method 3
each plastic sheet of the plurality of plastic sheets having anisotropy
Data Source
AI summary
According to an embodiment, a reed for an aerophone, the reed including a plurality of plastic sheets laminated in a lamination direction perpendicular to a longitudinal direction of the reed is provided, and an elastic modulus in the longitudinal direction of at least one plastic sheet of the plurality of plastic sheets is greater than an elastic modulus in a direction perpendicular to both the lamination direction and the longitudinal direction of the at least one plastic sheet.