公开(公告)号：US20060291767A1

公开(公告)日：2006-12-28

申请号：US11463668

申请日：2006-08-10

申请人： Thomas Andrews ,  Lorie Grimes-Ledesma

发明人： Thomas Andrews ,  Lorie Grimes-Ledesma

IPC分类号： G02B6/00

CPC分类号： G01M11/085

摘要： An optical fiber wound onto an exterior surface of a composite structure in a two-dimensional pattern and adhered thereto to detect damage to the structure caused by impacts to or handling of the composite structure.

摘要翻译： 光纤以二维图案缠绕在复合结构的外表面上并粘附到其上以检测由复合结构的冲击或处理引起的对结构的损坏。

公开(公告)号：US20050180677A1

公开(公告)日：2005-08-18

申请号：US10781162

申请日：2004-02-18

申请人： Thomas Andrews ,  Lorie Grimes-Ledesma

发明人： Thomas Andrews ,  Lorie Grimes-Ledesma

IPC分类号： G01M11/08 ,  G02B6/00

CPC分类号： G01M11/085

摘要： An optical fiber is wound onto an exterior surface of a composite structure, such as a composite overwrapped pressure vessel (“COPV”), in a two-dimensional pattern and adhered thereto, e.g., with a resin, to detect damage to the structure caused by impacts to or handling of the structure. After fabrication of the structure, a signature, or baseline, reference signal is established by detecting a light signal transmitted through the length of the fiber. Later, after the structure has been transported, handled, or placed into service, a second signal similar to the first is sent through the fiber and compared with the reference signal. Changes detected in the signal indicate that the structure may have sustained structural damage that may be invisible to external visual inspection, but that can be detected by more costly and time consuming conventional non-destructive inspection methods. In another embodiment, a pulsed light signal reflecting from a discontinuity in the optical fiber can be used to determine the location of the damage.

摘要翻译： 将光纤以二维图案缠绕在诸如复合外包装压力容器（“COPV”）的复合结构的外表面上，例如用树脂粘附到复合结构的外表面上，以检测对结构造成的损坏 通过对结构的影响或处理。 在制造结构之后，通过检测通过光纤的长度传输的光信号来建立签名或基线参考信号。 之后，在结构被传送，处理或投入使用之后，通过光纤发送类似于第一信号的第二信号并与参考信号进行比较。 在信号中检测到的变化表明结构可能具有可能对外部目视检查不可见的持续结构损伤，但可以通过更昂贵和耗时的常规非破坏性检查方法来检测。 在另一个实施例中，可以使用从光纤中的不连续性反射的脉冲光信号来确定损坏的位置。