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:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OS21400
- OSTI ID:
- 6664562
- Report Number(s):
- Y-2447; ON: DE93010760
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL COMPOUNDS
BENDING
CALCULATION METHODS
DEFORMATION
DEUTERIDES
DEUTERIUM COMPOUNDS
FINITE ELEMENT METHOD
HYDRIDES
HYDROGEN COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM DEUTERIDES
LITHIUM HYDRIDES
MATERIALS TESTING
MECHANICAL PROPERTIES
NUMERICAL SOLUTION
STRESS ANALYSIS
TENSILE PROPERTIES
TESTING
YOUNG MODULUS