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GMW15174
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GMW15174 3rd Edition, October 1, 2017 Constrained Layer Dampers – Nonreactive
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Description / Abstract:
This standard details the material and performance requirements for pressure sensitive constrained layer dampers.
These types of materials shall be utilized for local vibration and sound damping.
Material Description.
Constrained layer dampers are composed of a viscoelastic layer which is laminated to a constraining layer. The viscoelastic layer is typically butyl-rubber based, self-adhesive and non-reactive. The constraining layer is typically a thin sheet of aluminum. Aluminum constraining layers shall comply with SAE J454. Only constraining layers that have been validated as meeting the performance requirements of this standard shall be allowed. The part is supplied with the adhesive surface protected by a temporary release paper.
Symbols. Not applicable.
Applicability.
These materials are typically applied manually at Body Shop, Paint Shop or Trim Shop. Use should be restricted to relatively flat or gently contoured panels so that complete contact of this material to the panel can be assured. After the application, these constrained layer dampers shall be pressed on for optimum wet out.
Typical application areas include vertical surfaces such as inner surfaces of door outer panels and inner surfaces of quarter outer panels, and inverted surfaces such as inner surfaces of the decklid outer and inner surfaces of roof outer panels.
These types of materials shall be utilized for local vibration and sound damping.
Material Description.
Constrained layer dampers are composed of a viscoelastic layer which is laminated to a constraining layer. The viscoelastic layer is typically butyl-rubber based, self-adhesive and non-reactive. The constraining layer is typically a thin sheet of aluminum. Aluminum constraining layers shall comply with SAE J454. Only constraining layers that have been validated as meeting the performance requirements of this standard shall be allowed. The part is supplied with the adhesive surface protected by a temporary release paper.
Symbols. Not applicable.
Applicability.
These materials are typically applied manually at Body Shop, Paint Shop or Trim Shop. Use should be restricted to relatively flat or gently contoured panels so that complete contact of this material to the panel can be assured. After the application, these constrained layer dampers shall be pressed on for optimum wet out.
Typical application areas include vertical surfaces such as inner surfaces of door outer panels and inner surfaces of quarter outer panels, and inverted surfaces such as inner surfaces of the decklid outer and inner surfaces of roof outer panels.