초록 ▼

The invention relates to novel laminate tubular articles comprising an outer layer having a modulus of at least about 107 Pascals, an interior layer comprising a polymeric material having a loss tangent of at least about 0.5 at a temperature of from about 0°C. to about 40°C. at a frequency of from 1

The invention relates to novel laminate tubular articles comprising an outer layer having a modulus of at least about 107 Pascals, an interior layer comprising a polymeric material having a loss tangent of at least about 0.5 at a temperature of from about 0°C. to about 40°C. at a frequency of from 10-4,000 Hz and whose modulus is less than the modulus of the outer layer and an innermost layer having a modulus greater than the modulus of said interior layer. The invention further relates to a device for sensing in a body of water, said device comprising at least one sensor surrounded by the novel laminate tubular articles of the invention. The mechanical and acoustic properties of the article make it particularly appropriate for use as the hose in a towed-array sonar system.

대표청구항 ▼

A tubular article comprising: (a) an outer layer comprising a polymeric material having a Young\s modulus of at least about 107 Pascals; (b) an interior layer comprising a polymeric material having a loss tangent of at least about 0.5 at a temperature of from about 0°C. to about 40°C. and at a frequ

A tubular article comprising: (a) an outer layer comprising a polymeric material having a Young\s modulus of at least about 107 Pascals; (b) an interior layer comprising a polymeric material having a loss tangent of at least about 0.5 at a temperature of from about 0°C. to about 40°C. and at a frequency of from 10-4,000 Hz and a Young\s modulus less than the Young\s modulus of the material of the outer layer; and (c) an inner layer having a Young\s modulus from 107 to 1010 Pascals, said modulus being greater than the Young\s modulus of said interior layer; said layers being joined together to form a laminated tubular structure in which the interior layer is constrained due to its lamination to the inner and outer layers such that the article exhibits constrained layer damping.