公开(公告)号：WO2007131794A2

公开(公告)日：2007-11-22

申请号：PCT/EP2007/004392

申请日：2007-05-16

Applicant: BAM ,  STFI e.V. ,  HABEL Wolfgang ,  KREBBER, Katerina ,  THIELE, Elke ,  ARNOLD, Rolf ,  GLÖTZL, Rainer

Inventor： HABEL Wolfgang ,  KREBBER, Katerina ,  THIELE, Elke ,  ARNOLD, Rolf ,  GLÖTZL, Rainer

CPC classification number: E02B3/122 ,  D04B21/16 ,  D10B2403/02431 ,  D10B2505/204 ,  E02B3/10 ,  G01D5/35364 ,  G01M11/086

Abstract: A reinforcement element, comprises at least one sensor fiber adapted for strain measurements based on stimulated Brillouin scattering within said sensor fiber. Furthermore, a system for monitoring strain within a structure comprises a reinforcement element comprising at least one sensor fiber adapted for strain measurements based on stimulated Brillouin scattering within said sensor fiber, a pump laser for coupling in laser radiation of a pump frequency into said at least one sensor fiber, a Stokes laser for coupling in laser radiation of a Stokes laser radiation into said at least one sensor fiber, wherein the pump frequency and the Stokes frequency are different from one another and wherein the frequency difference between the pump and Stokes frequencies is within the range of acoustical phonons within said sensor fiber, a sensor adapted to obtain a stimulated Brillouin backscattering signal, and a network analyzer adapted for determining the complex transfer function of the sensor fiber to determine a spatially resolved strain measurement.

Abstract translation: 增强元件包括至少一个适于基于所述传感器光纤内受激布里渊散射的应变测量的传感器光纤。 此外，用于监测结构内的应变的系统包括加强元件，该加强元件包括适于基于所述传感器光纤内的受激布里渊散射的应变测量的至少一个传感器光纤，用于将泵浦频率的激光辐射耦合到所述至少一个 一个传感器光纤，斯托克斯激光器，用于将斯托克斯激光辐射的激光辐射耦合到所述至少一个传感器光纤中，其中泵浦频率和斯托克斯频率彼此不同，并且其中泵和斯托克斯频率之间的频率差为 在所述传感器光纤内的声学声子的范围内，适于获得受激布里渊后向散射信号的传感器和适用于确定传感器光纤的复数传递函数以确定空间分辨应变测量的网络分析仪。

公开(公告)号：EP2029993A2

公开(公告)日：2009-03-04

申请号：EP07725307.8

申请日：2007-05-16

Applicant: BAM Bundesanstalt für Materialforschung und- Prüfung ,  Stfi E.V.

Inventor： HABEL Wolfgang ,  KREBBER, Katerina ,  THIELE, Elke ,  ARNOLD, Rolf ,  GLÖTZL, Rainer

IPC: G01M11/08

CPC classification number: E02B3/122 ,  D04B21/16 ,  D10B2403/02431 ,  D10B2505/204 ,  E02B3/10 ,  G01D5/35364 ,  G01M11/086

Abstract: Use of a geo-textile system made from a textile structure and integrated sensor fibers for improving and monitoring a dam is new. Preferred Features: The textile structure has fleece layers (6, 6~) with embedded sensor fibers (3) and traction elements (8). The fleece layers are joined using a compacting process. The sensor fibers are glass fibers with special arrangements of the optical core regions or refractive index profiles.