Non Contacting Evaluation of Strains and Cracking Using Optical and Infrared Imaging Techniques
Abstract
This grant was issued under the DOD University Research Instrumentation Program. Two new test systems were purchased and set-up: a thermovision system and a non contacting three dimensional motion measuring system. The first system consists of an infrared scanner supported by a video recorder, a thermal image computer, corresponding software and other peripherals. It is being used as a non-contact non-destructive technique to analyse the mechanical response of and crack initiation in concrete under specified loading. The second system is a high accuracy three dimensional motion tracking, digitizing and analysis system. It essentially consists of two high resolution infrared dual axis sensors (cameras), a camera controller unit, a microcomputer, a data acquisition unit, and related software. This system can track the coordinates of up to 64 individual marker points placed on a test specimen with a frequency of 5000 hertz at accuracies of a fraction of a millimeter.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 22, 1988
- Accession Number
- ADA200397
Entities
People
- A. E. Naaman
Organizations
- University of Michigan