Multilayer Viscoelastic Tape for Thin Lightweight Vibration Damping
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Solution Overview
Problem
Existing vibration damping adhesive tapes are typically thick and heavy, which hinders their effectiveness in reducing vibration while being relatively thin and lightweight.
Innovation Solution
A vibration damping tape comprising a substrate with two layers of viscoelastic damping material, where each layer is thin (2 µm to 5,000 µm) and strategically positioned on the substrate or between substrates, allowing for efficient damping with a constrained layer system that can be applied to various materials like metals, plastics, and wood.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vibration damping adhesive tapes are used to achieve desired vibration damping characteristics, then vibration damping performance is improved, but the tape thickness and weight increase significantly
Solution Approach 1:
The damping system is segmented into multiple thin layers (substrate layer, first viscoelastic layer, second viscoelastic layer) rather than using a single thick layer. This segmentation allows the same damping performance to be achieved with reduced overall thickness and weight, as each thin layer contributes to the overall damping effect through their combined viscoelastic properties
Solution Approach 2:
The invention uses a composite structure combining a substrate material with viscoelastic damping materials in multiple layers. This composite approach allows optimization of each layer's thickness and material properties to achieve high damping performance while minimizing total weight and thickness, overcoming the limitation of single-material thick tapes
2Reliability
If traditional vibration damping adhesive tapes are used to achieve desired vibration damping characteristics, then vibration damping performance is improved, but the tape thickness increases
Solution Approach 1:
The damping system is segmented into multiple thin layers (substrate layer, first viscoelastic layer, second viscoelastic layer) rather than using a single thick layer. This segmentation allows the same damping performance to be achieved with reduced overall thickness, as each thin layer contributes to the overall damping effect through their combined viscoelastic properties
Solution Approach 2:
The invention transitions from a single-dimensional thick tape structure to a multi-dimensional layered structure. By distributing the damping function across multiple thin layers in the thickness dimension, the system achieves equivalent or superior damping performance with reduced overall thickness, effectively using dimensional distribution to solve the thickness problem
3Reliability
If traditional vibration damping adhesive tapes are used to achieve desired vibration damping characteristics, then vibration damping performance is improved, but the amount of adhesive used increases
Solution Approach 1:
The adhesive/damping material is segmented into multiple thin layers (first viscoelastic layer, second viscoelastic layer) rather than using a single thick adhesive layer. This segmentation reduces the total quantity of adhesive material needed while maintaining effective damping performance, as the distributed thin layers provide sufficient viscoelastic damping across the substrate surface
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 tape achieves high vibration damping efficiency with a reduced thickness and weight profile, providing broader and higher composite loss factor values across a range of temperatures, thus effectively addressing the limitations of previous tapes.
Implementation Method 1
a first layer of viscoelastic damping material at least partially disposed on the first face of the substrate. The tape additionally comprises a second layer of viscoelastic damping material at least partially disposed on the second face of the substrate
Data Source
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AI summary
The present invention relates to a tape for damping (100), the tape comprising a first substrate (110); a second substrate (130); a first layer of viscoelastic damping material (120); and a second layer of viscoelastic damping material (140), and a constrained layer system (300) comprising at least one of a first component and a second component (170) undergoing vibration; and the tape for damping (100).