Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties · 1998 · 19 citations · 10 references
EngineeringMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsRheologyTribologyFoam RheologyPorous MaterialsTribological MaterialsViscoelastic BehaviorDampingDamping MechanismsFoam Mechanical PropertiesFoaming BehaviorFrictionInternal FrictionMaterial DampingPore Size Effects
Abstract The low-frequency damping properties of foamed Al have been studied. The internal friction of foamed Ál obviously increases with an increase in porosity and a decrease in pore size, is nearly independent of frequency and typically depends on strain amplitudes. Based on the observed experimental phenomena, a damping mechanism is presented. According to the damping mechanism, the effects of pores and strain amplitude on internal friction have been analysed in detail and the experimental results have been better explained.
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Anelastic Relaxation in Crystalline Solids
A. S. Nowick, B. S. Berry, J. Lawrence Katz · Journal of Applied Mechanics · 1975 · 2.6K citations · Full text