公开(公告)号：WO2006127034A2

公开(公告)日：2006-11-30

申请号：PCT/US2005037674

申请日：2005-10-17

Applicant: MORGAN RES CORP

Inventor： WILLIAMS JEFFERY LEE ,  KRANZ MICHAEL SCOTT ,  HEATON LARRY CHRISTOPHER

IPC: G01J1/04

CPC classification number: G01B11/18 ,  G01B11/161 ,  G01B11/168 ,  G01J3/453 ,  G01J4/00 ,  G01M11/085

Abstract: The present invention provides the capability of ascertaining, through a quick and simple measurement, locations on a structure that may have experienced damage that could result in reduced structure lifetime, strength, or reliability. The sensing element is a connectorized section of polarization maintaining ("PM") optical fiber, where a length of PM fiber represents a fully distributed sensor array. Stress-induced changes to the sensor are measured through white-light Polarimetric interferometry. The output of the measurement is a data array representing the stress concentration magnitude at an array of locations along the length of the sensor. In an application, the knowledge of the optical fiber position on the structure, coupled with the measurement of stress locations along the fiber length, allows the user to determine locations on the structure with large stress concentrations. These locations may signify structural damage. This knowledge would allow the user to employ a more sophisticated system, albeit a larger and slower one, to fully characterize and evaluate that area of potential damage and take appropriate action.

Abstract translation: 本发明提供了通过快速和简单的测量来确定可能经历可能导致结构寿命，强度或可靠性降低的损坏的结构上的位置的能力。 感测元件是偏振维持（“PM”）光纤的连接部分，其中PM光纤的长度代表完全分布的传感器阵列。 通过白光极化干涉测量法测量传感器的应力诱发变化。 测量的输出是表示沿着传感器长度的位置阵列处的应力集中幅度的数据阵列。 在应用中，结构上的光纤位置的知识以及沿着光纤长度的应力位置的测量，允许用户确定具有大应力集中的结构上的位置。 这些位置可能意味着结构性损坏。 这种知识将允许用户使用更复杂的系统，尽管较大和较慢的系统完全表征和评估潜在损害的这一领域并采取适当的行动。

公开(公告)号：CA2584376C

公开(公告)日：2012-10-02

申请号：CA2584376

申请日：2005-10-17

Applicant: MORGAN RES CORP

Inventor： WILLIAMS JEFFERY LEE ,  KRANZ MICHAEL SCOTT ,  HEATON LARRY CHRISTOPHER

IPC: G01B9/02

Abstract: The present invention provides the capability of ascertaining, through a quick and simple measurement, locations on a structure that may have experienced damage that could result in reduced structure lifetime, strength, or reliability. The sensing element is a connectorized section of polarization maintaining ("PM") optical fiber, where a length of PM fiber represents a fully distributed sensor array. Stress-induced changes to the sensor are measured through white-light Polarimetric interferometry. The output of the measurement is a data array representing the stress concentration magnitude at an array of locations along the length of the sensor. In an application, the knowledge of the optical fiber position on the structure, coupled with the measurement of stress locations along the fiber length, allows the user to determine locations on the structure with large stress concentrations. These locations may signify structural damage. This knowledge would allow the user to employ a more sophisticated system, albeit a larger and slower one, to fully characterize and evaluate that area of potential damage and take appropriate action.

公开(公告)号：CA2584376A1

公开(公告)日：2006-11-30

申请号：CA2584376

申请日：2005-10-17

Applicant: MORGAN RES CORP

Inventor： WILLIAMS JEFFERY LEE ,  KRANZ MICHAEL SCOTT ,  HEATON LARRY CHRISTOPHER

IPC: G01B9/02

Abstract: The present invention provides the capability of ascertaining, through a quick and simple measurement, locations on a structure that may have experienced damage that could result in reduced structure lifetime, strength, or reliability. The sensing element is a connectorized section of polarization maintaining ("PM") optical fiber, where a length of PM fiber represents a fully distributed sensor array. Stress-induced changes to the sensor are measured through white-light Polarimetric interferometry. The output of the measurement is a data array representing the stress concentration magnitude at an array of locations along the length of the sensor. In an application, the knowledge of the optical fiber position on the structure, coupled with the measurement of stress locations along the fiber length, allows the user to determine locations on the structure with large stress concentrations. These locations may signify structural damage. This knowledge would allow the user to employ a more sophisticated system, albeit a larger and slower one, to fully characterize and evaluate that area of potential damage and take appropriate action.