Richter, H.H.RichterKienzler, R.R.KienzlerSoltesz, U.U.Soltesz2022-03-082022-03-081987https://publica.fraunhofer.de/handle/publica/315547The concentric-ring-test is utilized to determine the strength of high-density aluminas for biomedical use. A suitable experimental arrangement is presented which leads to a region of constant biaxial stress. The applicability for distinguishing sensitively between various surface preparations is demonstrated. In this sense, this test appears to be advantageous compared with uniaxial bending tests.en531620conference paper