NTRS - NASA Technical Reports Server

Back to Results
Digital Image Correlation for Performance MonitoringEvaluating the health of a mechanism requires more than just a binary evaluation of whether an operation was completed. It requires analyzing more comprehensive, full-field data. Health monitoring is a process of non-destructively identifying characteristics that indicate the fitness of an engineered component. In order to monitor unit health in a production setting, an automated test system must be created to capture the motion of mechanism parts in a real-time and non-intrusive manner. One way to accomplish this is by using high-speed video and Digital Image Correlation (DIC). In this approach, individual frames of the video are analyzed to track the motion of mechanism components. The derived performance metrics allow for state-of-health monitoring and improved fidelity of mechanism modeling. The results are in-situ state-of-health identification and performance prediction. This paper introduces basic concepts of this test method, and discusses two main themes: the use of laser marking to add fiducial patterns to mechanism components, and new software developed to track objects with complex shapes, even as they move behind obstructions. Finally, the implementation of these tests into an automated tester is discussed.
Document ID
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Palaviccini, Miguel
(Sandia National Labs. Albuquerque, NM, United States)
Turner, Dan
(Sandia National Labs. Albuquerque, NM, United States)
Herzberg, Michael
(National Nuclear Security Administration Kansas City, MO, United States)
Date Acquired
June 30, 2016
Publication Date
May 4, 2016
Publication Information
Publication: 43rd Aerospace Mechanisms Symposium
Subject Category
Mechanical Engineering
Instrumentation And Photography
Meeting Information
Meeting: Aerospace Mechanisms Symposium
Location: Santa Clara, CA
Country: United States
Start Date: May 4, 2016
End Date: May 6, 2016
Sponsors: NASA Ames Research Center, Mechanisms Education Association, Lockheed Martin Space Systems Co.
Distribution Limits
Public Use Permitted.
No Preview Available