Method and device for determining the properties of a pressure-manipulable test sample
AssigneeBAM Bundesanstalt fuer Materialforschung und -pruefung
InventorUwe Beck
Life of this patent
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Abstract
A method for determining the plasto-elastic properties of a test sample, which can be affected by the action of pressure, includes pressing a test body against a surface of the test sample with a defined force. Plasto-elastic changes of the surface resulting therefrom are recorded during and/or after the pressure application. A centrifugal force generated by rotating the test body around an axis is utilized as a pressure force which is generated by radially movably guiding the test body, which is disposed between the test sample and the axis, relative to the radially fixed test sample.
Claims13
A method for determining plasto-elastic properties of a test sample which can be affected by an action of pressure, the method comprising the following steps:
- radially fixing a rigid test sample;
- pressing a test body against a surface of the test sample with a defined centrifugal pressing force generated by rotation of the test body about an axis;
- radially moveably guiding the test body, relative to the test sample, between the test sample and the axis, for applying the pressing force;
- recording resulting plasto-elastic changes in the surface of the test sample at least one of during or after applying the pressing force;
- recording a temporal course of radial motion of the test body while applying the pressing force to the test sample;
- and
- recording a penetration depth of the test body in the test sample.
A method for determining plasto-elastic properties of a test sample which can be affected by an action of pressure, the method comprising the following steps:
- radially fixing an elastic test sample in the form of a film by clamping parallel to a rotational axis;
- pressing a test body against a surface of the test sample with a defined centrifugal pressing force generated by rotation of the test body about the axis;
- radially moveably guiding the test body, relative to the test sample, between the test sample and the axis, for applying the pressing force;
- recording resulting plasto-elastic changes in the surface of the test sample at least one of during or after applying the pressing force;
- recording a temporal course of radial motion of the test body while applying the pressing force to the test sample;
- and
- recording a strain of the test sample caused by applying the pressing force.
A device for determining plasto-elastic properties of a test sample which can be affected by an action of pressure, the device comprising:
- a centrifuge having a rotational axis, a radial direction and a drum rotor with a cylindrical inner wall surface;
- a plurality of clamping devices configured to radially fix a test sample with one surface of the test sample perpendicular to said radial direction;
- said clamping devices mounted on said cylindrical inner wall surface concentric with said rotational axis;
- said clamping devices being at least one of circumferentially distributed or disposed above one another in direction of said rotational axis;
- a test body configured to be pressed against a surface of the test sample with a defined centrifugal pressing force generated by rotation of the test body about said rotational axis;
- said test body configured to be radially moveably guided, relative to the test sample, between the test sample and the axis, for applying the pressing force and permitting resulting plasto-elastic changes in the surface of the test sample at least one of during or after applying the pressing force to be recorded.
Dependencies are inferred from the claim text.