Self-damping convoluted conduit

摘要

A convoluted conduit is especially well adapted for use in hostile environments subject to vibrations which bring on fatigue failures. To prevent the conduit from having a uniform resonance throughout its length, the convolutions have a variable wall thickness. One way this variable wall thickness may be achieved is by forming the conduit walls by wrapping tape in successive layers to form a multiple layered wall. The width of the tape may be such that each alternate convolution has more layers than its two adjacent neighboring convolutions. Another way of making the conduit is to provide a plurality of coaxially nesting tubes which cooperate to form a wall thickness. Brazing or packing material may be positioned between adjacent layers of tape to seal the conduit and to make the wall behave at that point as a single layer.