Design and evaluation of a uniaxial pull test for lithium hydride/deuteride
- Oak Ridge Y-12 Plant, TN (United States)
- Oak Ridge National Lab., TN (United States)
A uniaxial pull test was developed for determining tensile strength of lithium hydride (LiH). Objectives were to establish the capability of acquiring highly credible uniaxial strength data using a conventional pull specimen and to assess compatibility of existing data bases from disk flexure, four-point bend, and ring tensile tests. A specimen was designed using elliptic contours between gage section and button-head ends to minimize stress concentrations. A finite-element stress analysis was performed. Bending strains resulting from load train misalignment were also minimized by close tolerancing of the gripping fixture and the use of hydraulic-universal joints. Twenty specimens were fabricated and tested for a preliminary date base. Bending studies were conducted on two specimens. Within the load range of interest, bending stresses accounted for about 1% of the nominal stress. The test provided reliable, true-uniaxial strength data. Comparison with existing data bases suggests that high-stress gradients within a specimen may alter strength distribution. 8 refs, 13 figs, 1 tab.
- Research Organization:
- Oak Ridge Y-12 Plant, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OS21400
- OSTI ID:
- 10139219
- Report Number(s):
- Y--2447; ON: DE93010760
- Country of Publication:
- United States
- Language:
- English
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