## Abstract The strength of two dental stones under three standard test regimens and two novel testing modes is reported. It was found under all test regimens that the water/powder ratio significantly affected the strength of the two gypsum products in a similar manner. It was established that the
Shear strength testing of solid oxygen
โ Scribed by S.C. Bates; T.L. Altshuler
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 1016 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
Experiments have been performed to test the shear strength of solid oxygen. Shear strength measurements were made in a cryostat by pulling a rod out of solidified liquid oxygen. The approximate shear strength of solid oxygen was measured as a function of temperature, increasing from 0.31 MPa at 45 K, to 4.46 MPa at 18 K. Solid oxygen was found to undergo plastic deformation at high temperatures, becoming increasingly strong and brittle as its temperature was decreased. Data and simple experiments confirmed a similarity of engineering material properties between solid oxygen and room temperature plastics.
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