Metallurgy, Vol. 41 No. 4, 2002.
Preliminary communication
Static Compression and Resonance Vibration Tests on Cellular Materials G
M. Kupková
S. Strobl
M. Kupka
H. Danninger
E. Dudrová
Abstract
The cylindrical and rod-shaped specimens were prepared by gravity sintering from Cu-Sn hollow spheres. On these samples, both static compression tests and measurements of resonance frequencies were performed. The compressive stress-strain curves revealed the features characteristic for a closed-cell ductile cellular solid. The removal of in general open porosity among loosely packed closed metallic hollow spheres was recognized as the principal mode of plastic deformation. The approximative effective moduli of elasticity were determined for cellular materials under consideration by means of the measurements of resonance frequencies on rod-shaped specimens.
Keywords
Hrčak ID:
128570
URI
Publication date:
1.10.2002.
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