Method for determining the mechanical properties of elongated textile test material and a device for carrying out the method
AssigneeLenzing Aktiengesellschaft
InventorGerold Roos
Life of this patent
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Abstract
Mounted within the measuring section (10) formed by two clamping devices (2, 4) are measuring rollers (8, 9) which deflect the test material (10). The deflection results in a force couple (P, P′) and a resultant force (R). The resultant force (R) is transferred into a load cell (3) via a link (6). This arrangement enables the clamping devices (2, 4) and the load cell (3) to be mounted separately. The measuring rollers (8, 9) are equipped with incremental transducers (19, 20) by means of which the clamp slippage (Δ1) creeping out of the clamping faces of the clamping devices (2, 4) and the extension of the test material sections (10′, 10″) are measured.
Claims13
A method for determining mechanical properties of an elongated textile test material, said method comprising the steps of:
- clamping and stretching the elongated textile test material between two clamping devices and measuring the occurring tensile force,
- deflecting the elongated textile test material by an angle between the clamping device,
- converting extension of the elongated textile test material, including clamp slippage, into signals which are proportional to the extension, and
- evaluating said signals.
A device for determining mechanical properties of an elongated textile test material, said device comprising a fixed and a movable clamping device between which a measuring section is formed, at least one free-running measuring roller disposed within the measuring section for the purpose of deflecting the elongated textile test material by an angle, at least one of the measuring rollers being equipped with an incremental transducer by which an extension of the elongated textile test material in the measuring section located between the clamping device and the at least one measuring roller, including clamp slippage of the elongated textile test material creeping out of the clamping devices, which is transferred to the measuring rollers as rotational movement, is converted into signals which are proportional to the extension.
A method for determining mechanical properties of an elongated textile test material, said method comprising the steps of:
- clamping and stretching the elongated textile test material between two clamping devices and measuring the occurring tensile force,
- deflecting the elongated textile test material by an angle between the clamping devices and forming a force couple as a result and using a resultant force for a determination of the mechanical properties of the elongated textile test material, and
- converting extension of the elongated textile test material, including clamp slippage, into signals which are proportional to the extension, and
- evaluating said signals.
Dependencies are inferred from the claim text.