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Two loading and gripping systems for the uniaxial testing of ceramics in tension-creep and in cyclic tension-compression respectively, are presented. In both systems flat samples are held in hydraulic grips (cold gripping). The tensile set-up incorporates an adjustable universal joint in the loading train in order to minimise the bending level in the specimens. Low bending in the rigid, cyclic tension-compression set-up is achieved by appropriate alignment of the loading train-grip assembly prior to the onset of a test series. The relevant quantity to characterise the alignment performance of a loading train-grip assembly is the maximum level of bending along the gauge length of a uniaxial specimen, expressed in terms of the precision of alignment P. The maximum precision of alignment which is achieved at the failure stresses of the materials under investigation is smaller than approximately 4.5 x 1.0 E-5 and 3.5 x 1.0 E-5 in the tension and cyclic tension-compression systems, respectively.

Additional information

Authors: ADAMI J N, JRC Petten (NL);BRESSERS J, JRC Petten (NL);FENSKE E, JRC Petten (NL);STEEN M, JRC Petten (NL);BOLSCH D, Deutsche Airbus, Lemwerder (DE)
Bibliographic Reference: Article: Journal of the European Ceramic Society, Vol. 7 (1991) pp. 227-236
Record Number: 199110909 / Last updated on: 1994-12-02
Original language: en
Available languages: en