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METHOD AND APPARATUS FOR DISTRIBUTED CLEFT AND LIBERATED TILE DETECTION ACHIEVING FULL COVERAGE OF THE TURBINE COMBUSTION CHAMBER
METHOD AND APPARATUS FOR DISTRIBUTED CLEFT AND LIBERATED TILE DETECTION ACHIEVING FULL COVERAGE OF THE TURBINE COMBUSTION CHAMBER
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机译：实现涡轮机燃烧室全覆盖的分布式刀形和瓦形检测的方法和装置
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摘要
A component sensing system for monitoring the condition of ceramic tiles in a combustion chamber of a gas turbine engine. The sensing system includes an optical fiber that is mounted to the component being monitored, for example, the ceramic tiles in the gas turbine combustion chamber. The optical fiber can be formed in any suitable orientation or configuration, such as a meandering or serpentine orientation. The fiber is optically coupled to a Brillouin signal analyzer that provides an optical pulse to the sensing section of the fiber and detects Brillouin backscattering from the fiber as the pulse travels along the fiber. The frequency of the Brillouin backscattering signal is monitored relative to the distance along the sensing section of the fiber. A rise in temperature at a location of the fiber shows up in the analyzer as an increase in frequency of the backscattered signal
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