Publications by authors named "H Fessel"

Modified rheological methods from high polymer physics (biorheology, historheology) have been applied to the testing of hyaline cartilage histomechanics. The following histomechanical properties of cartilage are discussed: transient behaviour, the influence of the mechanical history on the subsequent force-deformation processes, viscoelastic equilibrium status (histomechanical steady state), and relaxation phenomena in the pressure and tension range under alternating pressure-tension loading. Pressure force-time input and output curves in a closed loop system and the amplitude-increasing phenomenon under uniform sinus deformations with increasing superimposed linear deformation input were also demonstrated.

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The strain properties of geometrically defined specimens of human, pig, and bovine liver capsule were analysed in vitro by applying histomechanical procedures. The dynamic relaxation correlates with the static relaxation under sinus shaped strain process after previous additional predetermined increase in length. If such a process occurs in the linear region of the stress-strain curve, the relaxation process continues on a new level even if the amplitude of the sinus length-time input function is augmented.

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