Sensor sleeve for health monitoring of an article

摘要

A sensor sleeve for use in detecting a failure in an article (e.g., a hydraulic hose), the sensor sleeve includes an insulator layer that separates two electrode layers. As such, the electrode layers deform to contact each other, which changes the impedance as measured across the electrode layers. The sensor sleeve is designed to change electrical impedance (resistance) due to fluid pressure initiating a hole through the sensor itself. The sensor sleeve will detect the fluid leak when the hole penetrates the sensor and brings the two elastic electrodes in contact with each other and/or the fluid, which when the fluid is conductive fluid, creates a signal path between the first electrode layer and the second electrode layer, which also changes the impedance as measured across the electrode layers.

主权项

1. A fluid system, comprising:
an article to be monitored for damage, the article including an outermost surface; and a sensor sleeve arranged over the outermost surface of the article, the sensor sleeve comprising:
a first electrode layer covering at least a portion of the outermost surface of the article;a dielectric layer covering a least a portion of the first electrode layer; anda second electrode layer covering at least a portion of the dielectric layer,wherein the first electrode layer, the dielectric layer and the second electrode layer form a pressure or strain sensor operative to detect a pressure or strain on the article, and wherein damage to the article covered by the first electrode layer, the dielectric layer and the second electrode layer causes the first electrode layer to contact the second electrode layer, thereby decreasing the impedance between the first electrode layer and the second electrode layer, wherein the combination of the first electrode layer, the dielectric layer and the second electrode layer are configured to be removably attachable to the article to detect damage to the article.