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Material sample for testing biaxial stress conditions

  • US 8,601,881 B2
  • Filed: 08/01/2009
  • Issued: 12/10/2013
  • Est. Priority Date: 08/14/2008
  • Status: Expired due to Fees
First Claim
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1. A material sample (1) for testing material properties under biaxial load under rotation about its center line (17), with the material sample (1) having a circular disk shape and having a hub (12), a ring section (14), and an edge (11), with the edge (11) and the hub (12) being axially thicker than the ring section (14) located in between, with the ring section (14) being designed with a concave fillet (13) that is concentric to the center line (17) on the two respective sides of the material sample (1) and that extends from the hub (12) to the edge (11) and is curved at least in sections over its width, a rotating stay bolt (15) integrally connected to and extending from the hub (12) concentrically to the centerline (17) of the material sample (1) whereby the stay bolt (15) rotates with the hub, wherein the material sample (1) is a solid disk without a through-going centric hub bore, completely rotationally symmetric, or at least predominantly symmetric;

  • the material sample being configured and arranged to rotate about the center line, and wherein the stay bolt (15), hub (12), ring section (14), and edge (11) are integrally formed from the same material into a unitary member.

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