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High-Speed X-Ray Stereo Digital Image Correlation in a Shock Tube
- Source :
- Experimental Techniques. 46:1061-1068
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- X-ray stereo digital image correlation (DIC) measurements were performed at 10 kHz on the internal surface of a jointed structure in a shock tube at a shock Mach number of 1.42 and compared with optical stereo DIC measurements on the outer, visible surface of the structure. The shock tube environment introduces temperature and density gradients in the gas through which the structure was imaged, resulting in spatial and temporal index of refraction variations. These variations cause bias errors in optical DIC measurements due to beam-steering but have minimal influence on x-ray DIC measurements. These results demonstrate the utility of time-resolved x-ray DIC measurements in complicated environments where optical measurements suffer severe errors and/or are precluded by lack of optical access.
- Subjects :
- Surface (mathematics)
Digital image correlation
Materials science
genetic structures
business.industry
Mechanical Engineering
Optical measurements
X-ray
eye diseases
Shock (mechanics)
symbols.namesake
Optics
Mach number
Mechanics of Materials
hemic and lymphatic diseases
symbols
sense organs
business
Shock tube
Refractive index
circulatory and respiratory physiology
Subjects
Details
- ISSN :
- 17471567 and 07328818
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- Experimental Techniques
- Accession number :
- edsair.doi...........a195ff1a7cde9e16f023b1e153343fc3