Elastic constants of a material with orthorhombic symmetry: An alternative measurement approach

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.357577· OSTI ID:7249202

Lei, M ^[1]; Ledbetter, H ^[2]; Xie, Y ^[3]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. National Institute of Standards and Technology, Boulder, Colorado 80303 (United States)
3. National Oceanic and Atmospheric Administration, Boulder, Colorado 80303 (United States)

An alternative approach to measuring the complete anisotropic elastic constants [ital c][sub [ital ij]]([ital s][sub [ital ij]]) of an orthorhombic-symmetry material is proposed. This approach requires measurements along only principal directions: [l angle]100[r angle]. In this approach, a pulse-echo (megahertz-frequency) method was used to measure [ital c][sub 11], [ital c][sub 22], [ital c][sub 33], [ital c][sub 44], [ital c][sub 55], and [ital c][sub 66]. A resonance (kilohertz-frequency) method was used to measure three elastic compliances: [ital s][sub 11], [ital s][sub 22], and [ital s][sub 33]. Combining the [ital c][sub [ital ii]] with the [ital s][sub [ital ii]], the complete sets of [ital c][sub [ital ij]] and [ital s][sub [ital ij]] were obtained. This approach avoids the troublesome, error-prone determination of off-diagonal [ital c][sub [ital ij]]([ital s][sub [ital ij]]) by the usual measurements along nonprincipal directions. The approach was applied to a boron-aluminum composite where the off-diagonal terms remain uncertain. In principle, the approach applies to any orthorhombic-symmetry material.

• OSTI ID: 7249202
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 76:5; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALUMINIUM
BORON
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELASTICITY
ELEMENTS
FIBERS
MATERIALS
MEASURING METHODS
MECHANICAL PROPERTIES
METALS
ORTHORHOMBIC LATTICES
REINFORCED MATERIALS
SEMIMETALS
TENSILE PROPERTIES