公开(公告)号：US09926937B2

公开(公告)日：2018-03-27

申请号：US14386393

申请日：2013-03-19

Applicant: SNECMA

Inventor： David Tourin ,  Pierre Ferdinand ,  Valerio Gerez ,  Andre Leroux

IPC: F04D27/00 ,  F01D5/28 ,  F01D17/02 ,  F01D21/00 ,  F04D29/32 ,  G01M5/00 ,  F04D19/00 ,  G01B11/16 ,  G01D5/353

CPC classification number: F04D27/001 ,  F01D5/282 ,  F01D17/02 ,  F01D21/003 ,  F04D19/002 ,  F04D29/324 ,  F05D2260/80 ,  F05D2270/804 ,  F05D2300/603 ,  G01B11/18 ,  G01D5/353 ,  G01M5/0016 ,  G01M5/0033 ,  G01M5/0091 ,  Y02T50/672

Abstract: A system for detecting deformation of a fan for an aeroengine, the fan including a rotor including plural blades made of composite material including woven fibers. At least one of the fibers in each of the blades is an optical fiber including at least one portion defining a Bragg grating. The system further includes a transceiver connected to the optical fiber and configured to send an optical signal into the optical fiber and to receive an optical signal in response from the optical fiber, and a detector module connected to the transceiver to detect deformation of the fan when the received optical signal presents correlation with a predetermined signature of a damped impact on a blade at a determined speed of rotation. This deformation may be the result of a foreign object impacting against a blade of the fan or may follow from variation in an internal defect.

公开(公告)号：US20150098819A1

公开(公告)日：2015-04-09

申请号：US14386393

申请日：2013-03-19

Applicant: SNECMA

Inventor： David Tourin ,  Pierre Ferdinand ,  Valerio Gerez ,  Andre Leroux

IPC: F04D27/00 ,  G01B11/16 ,  G01D5/353 ,  F04D19/00

CPC classification number: F04D27/001 ,  F01D5/282 ,  F01D17/02 ,  F01D21/003 ,  F04D19/002 ,  F04D29/324 ,  F05D2260/80 ,  F05D2270/804 ,  F05D2300/603 ,  G01B11/18 ,  G01D5/353 ,  G01M5/0016 ,  G01M5/0033 ,  G01M5/0091 ,  Y02T50/672

Abstract: A system for detecting deformation of a fan for an aeroengine, the fan including a rotor including plural blades made of composite material including woven fibers. At least one of the fibers in each of the blades is an optical fiber including at least one portion defining a Bragg grating. The system further includes a transceiver connected to the optical fiber and configured to send an optical signal into the optical fiber and to receive an optical signal in response from the optical fiber, and a detector module connected to the transceiver to detect deformation of the fan when the received optical signal presents correlation with a predetermined signature of a damped impact on a blade at a determined speed of rotation. This deformation may be the result of a foreign object impacting against a blade of the fan or may follow from variation in an internal defect.

Abstract translation: 一种用于检测航空发动机的风扇的变形的系统，所述风扇包括由包括机织纤维的复合材料制成的多个叶片的转子。 每个叶片中的至少一个纤维是包括限定布拉格光栅的至少一个部分的光纤。 该系统还包括连接到光纤的收发器，其被配置为将光信号发送到光纤中并且响应于光纤接收光信号;以及检测器模块，连接到收发器以检测风扇的变形， 所接收的光信号以确定的旋转速度呈现与叶片上的阻尼冲击的预定特征的相关性。 这种变形可能是异物撞击风扇叶片的结果，或者可能跟随内部缺陷的变化。