Invention Grant
- Patent Title: In situ health monitoring of piezoelectric sensors
- Patent Title (中): 压电传感器的原位健康监测
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Application No.: US12566111Application Date: 2009-09-24
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Publication No.: US08401820B2Publication Date: 2013-03-19
- Inventor: Scott L. Jensen , George J. Drouant
- Applicant: Scott L. Jensen , George J. Drouant
- Applicant Address: US DC Washington
- Assignee: United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee: United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee Address: US DC Washington
- Agent Randall M. Heald; B. Delano Jordan
- Main IPC: G01H11/08
- IPC: G01H11/08 ; G06F15/00
Abstract:
An in situ health monitoring apparatus may include an exciter circuit that applies a pulse to a piezoelectric transducer and a data processing system that determines the piezoelectric transducer's dynamic response to the first pulse. The dynamic response can be used to evaluate the operating range, health, and as-mounted resonance frequency of the transducer, as well as the strength of a coupling between the transducer and a structure and the health of the structure.
Public/Granted literature
- US20100088067A1 In Situ Health Monitoring of Piezoelectric Sensors Public/Granted day:2010-04-08
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