Patent ID: 7533577
Filing Date: 2009-05-19
Classification: G01N

Abstract:
1. A device for determining elastomer material properties for the Mullins effect under bi-axial tension, the device comprising: a top plate having an elliptical opening; a bottom plate having an inflating fluid intake and an inflating fluid outlet; a plurality of fasteners for coupling the top and bottom plate; an elastomer specimen configured to be sandwiched between the top and bottom plate; wherein the elastomer specimen's area is larder enough to cover the opening so that a fluid-tight environment and non-slipping boundary condition of the membrane are formed when the top plate and the bottom plate are coupled together by the fasteners, wherein the fluid-tight environment further includes one first O-ring fixedly attached to bottom of the top plate and two second O-rings fixedly attached to top of the bottom plate, around the opening's perimeter, the first O-ring fits in between the two second O-rings.