Patent ID: 11897234
Assignee: UNIVERSITY OF LIMERICK
Field: Surface technology, coating (Chemistry)
Classification: CPC B  F | IPC B

Claim 15:
16. A method of producing an article for damping vibrations by constrained layer damping, the article comprising:
a first constraining layer,
a second constraining layer, and
a damping layer disposed between the first and second constraining layers,
wherein the first and second constraining layers each independently comprise a fibre-reinforced composite material comprising one or more fibre(s) and a polymer composition;
wherein the first and second constraining layers each independently have a thickness from 1.5 to 5 mm;
wherein the damping layer comprises a viscoelastic material; wherein the damping layer has a thickness from 1 to 10 mm; and
wherein the article has a thickness from 6 to 50 mm;
wherein the method comprises the step of:
(i) providing the damping layer, said damping layer having a first and second surface;
(ii) disposing one or more fibre(s) on the first and second surfaces of said damping layer;
(iii) infusing the damping layer and/or one or more fibre(s) with a polymer composition; and
(iv) curing said polymer composition to form the fibre-reinforced composite material of the first and second composite layers.