Hydrostatic compaction of Microtherm ^®HT

Technical Report · Wed Sep 01 00:00:00 EDT 2010

DOI:https://doi.org/10.2172/1044984· OSTI ID:1044984

Broome, Scott Thomas ^[1]; Bauer, Stephen J. ^[1]

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1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Two samples of jacketed Microtherm^®HT were hydrostatically pressurized to maximum pressures of 29,000 psi to evaluate both pressure-volume response and change in bulk modulus as a function of density. During testing, each of the two samples exhibited large irreversible compactive volumetric strains with only small increases in pressure; however at volumetric strains of approximately 50%, the Microtherm^®HT stiffened noticeably at ever increasing rates. At the maximum pressure of 29,000 psi, the volumetric strains for both samples were approximately 70%. Bulk modulus, as determined from hydrostatic unload/reload loops, increased by more than two-orders of magnitude (from about 4500 psi to over 500,000 psi) from an initial material density of ~0.3 g/cc to a final density of ~1.1 g/cc. An empirical fit to the density vs. bulk modulus data is K = 492769_Ρ{sup ^4.6548, where K is the bulk modulus in psi, and Ρ is the material density in g/cm³. The porosity decreased from 88% to ~20% indicating that much higher pressures would be required to compact the material fully.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1044984
• Report Number(s): SAND--2010-6014
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
HYDROSTATICS
POROSITY
STRAINS
TESTING