System for verification of testing machine speed
AssigneeIllinois Tool Works Inc.
InventorsHoward SPADER, Daniel CAESAR
Life of this patent
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Abstract
The present disclosure relates to a system for verification of the speed of crosshead travel in a materials testing device. A linear displacement device is mounted on the crosshead of the materials testing device. The linear displacement device measures the displacement of the crosshead during the test. A timer interval counter measures the time of travel of the crosshead during the test. This measurements allow for accurate calculation of the speed of the crosshead travel.
Claims18
A method for calculating speed of a crosshead in a materials testing device, including the steps of:
- providing a linear displacement measuring device on a crosshead of a materials testing device;
- providing a timer;
- measuring linear displacement at a starting time using the linear displacement measuring device;
- measuring time at the starting time using the timer;
- moving the crosshead of the materials testing device from the starting time to an ending time;
- measuring linear displacement at an ending time using the linear displacement measuring device;
- measuring time at the ending time using the timer;
- and
- calculating an average speed of the crosshead using measured linear displacement and time at the starting time and the ending time.
A system for calculating speed of a crosshead in a materials testing device, including:
- a linear displacement measuring device on a crosshead of a materials testing device;
- a timer;
- the linear displacement measuring device measuring linear displacement at a starting time;
- the timer measuring time at the starting time;
- the crosshead of the materials testing device moving from the starting time to an ending time;
- the linear displacement device measuring linear displacement at an ending time;
- the timer measuring time at the ending time;
- and
- a computing device calculating an average speed of the crosshead using measured linear displacement and time at the starting time and the ending time.
Dependencies are inferred from the claim text.