Test apparatus for the simultaneous loading of a test sample with longitudinal forces and with torque

US4196635A · kind A · utility

Assignee

• Carl Schenck AG · DE

Inventors

• Guenter Zuber · Darmstadt, DE
• Karlheinz Storck · Lorch, DE

Key dates

• Filing date: Nov 15, 1978
• Grant date: Apr 8, 1980
• Expiry date: Nov 15, 1998

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2203/0048
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present test apparatus provides for the simultaneous loading of a test sample with longitudinal forces and with torque. For this purpose a piston rod of a longitudinal loading cylinder and a piston of a torque cylinder are coupled for relative axial movement by a fork connected to the piston rod of the longitudinal loading cylinder and guided in a torque transmitting member connected to the piston of the torque cylinder. Frictional forces and play are minimized by providing the fork ends with bearing surfaces and providing the torque transmitting member with both stationary and tiltable bearings which may be adjustable. Another embodiment provides that the bearings of the torque transmitting member are hydrostatic bearings to further reduce friction.