why are the dimensions of the sample for measuring mechanical properties
Answers
Explanation:
Elastic modulus.
Hardness.
Complex modulus for viscoelastic materials.
Fracture toughness.
Mechanical testing is frequently used to characterize tendons, and to describe the effects of interventions such as exercise or medication on their mechanical properties. Force, deformation and stiffness, derived from an ultimate tensile strength test, provide sample specific information about the mechanical behaviour of a tendon sample. From these values, stress, strain and elastic modulus are regularly derived in order to provide quantitative data concerning material properties, with the intention of characterizing the material irrespective of sample dimensions. However, when comparing the results of different studies, it is evident that the reported material properties, in particular the strain values, vary hugely, e.g. from 6–10% (Rigby et al., 1959; Tamiwa, 2007) to 17–20% (Almeida-Silveira et al., 2000; Legerlotz et al., 2007) in rat tendons.
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