We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Use of Confocal Microscope for Environmental Tensile Mechanical Testing.
- Authors
Nealley, W. H. H.; Akanda, S. R.; Doğan, Ö. N.; Hawk, J. A.; Rozman, K. A.; Nakano, J.
- Abstract
Mechanical testing in environmental chambers is typically limited to 450°C. Some specialty chambers have been designed but at a high cost. Furthermore, accurate extensometers in environmental chambers are rare and expensive to operate. A unique solution investigated in this manuscript is the mating of a confocal laser scanning microscope with a sealed environmental chamber fitted with loading clevises for mechanical testing. Such a setup allows the researcher to measure strain data at elevated temperatures in controlled environments. Utilizing a laser light source avoids problems with blackbody radiation at elevated temperatures. Setup and accuracy of the microscope are discussed concerning tensile loading. P91 boiler steel was selected for this work because of the long history of the alloy in the fossil energy industry. Optical strain uncertainty was measured between 1.6% and 3.5%. Other tensile parameters were satisfactorily measured within the experimental error of larger standard specimens.
- Subjects
TENSILE tests; MECHANICAL behavior of materials; CONFOCAL microscopy; EXTENSOMETER; ACOUSTIC microscopes; NATURE &; nurture
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2018, Vol 70, Issue 10, p2270
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-018-3027-5