ABSTRACT
Among the various mechanical tests available for solid biomaterial the simplest and most common is compression tests. Solids in their intact forms or as prepared specimens are subjected to simple axial compression tests employing a rigid cylindrical die, a steel ball, or rigid flat plates as the loading devices. In the case of compression tests of intact materials, such as seeds and grains, an egg, fruits and vegetables, the loading device is compressed against a convex body which results in a complex stress distribution particularly if the skin of such materials as fruits is left injact.
