FAQ - Frequently Asked Questions

This section outlines how to remove the specimen. For details, refer to the manual of each test jig.

 

WARNING:

  • Keep away from the loading frame when starting the Hydraulic Power Supply.
    It is extremely dangerous because the actuator piston may move rapidly. Before starting the Hydraulic Power Supply, be sure to check the safety of the surrounding area.
  • Before starting or stopping the Hydraulic Power Supply, turn the handle of the relief valve counterclockwise until it lightens to prevent pressure build-up.
    Failure to do so may cause damage to hydraulic equipment such as servo valves.
  • Be sure to unload before removing the specimen.
    It is very dangerous if the actuator moves.
  • When setting or removing the specimen, be sure to stop the Hydraulic Power Supply.
    It is very dangerous if the actuator moves during operation. If it is necessary to set or remove the specimen with the Hydraulic Power Supply activated, such as when using a Hydraulic Grip, set the actuator control mode to piston stroke and mount or remove the test piece.
  • When inserting a hand between the upper and lower test jigs when mounting or removing the test piece, raise the crosshead and check that there is sufficient space between the jigs.
    If the distance between the jigs is small, you may injure your hands or fingers by pinching them when the crosshead or piston moves by mistake.
  • When inserting a hand between the upper and lower test jigs to install or remove the test piece, make sure that the crosshead drop prevention stopper is firmly pressed against the upper surface of the cylinder of the lifting jack.
    If the crosshead moves due to mistake, you may get injured by holding your hands or fingers.
  • Wear gloves when removing the fractured specimen.
    You may cut your hand on the sharp fracture surface of the fractured specimen.
  • Wear protective glasses when installing or removing the specimen.
    It is extremely dangerous if the test piece or tool is broken and hit the eye.

  • Install and remove the test piece by one person.
    It is very dangerous if the actuator move unintentionally during operation.

 

1. Shutdown procedure (The specimen is not fractured)
  1) Unload.
    Set the test force control mode and unload by using the mean value moving function. Confirm that the measurement value is less than the set value of the touch load function, and finally use the Jog Dial to completely unload.
  2) Stop the Hydraulic Power Supply and remove the specimen from the crosshead side jig.
  3) Start the Hydraulic Power Supply, turn the Jog Dial to lower the piston.
  4) Stop the Hydraulic Power Supply and remove the specimen from the actuator side jig.
  5) If it is necessary to remove the test jig.

    Click here for "(EHF) Test preparation".

  6) Turn off the power switch on the front of the control unit.

 

2. Shutdown procedure (The specimen is fractured)
  1) Check that the actuator is in stroke control mode.
  2) Raise the crosshead to allow enough space for removing the specimen.
  3) Stop the Hydraulic Power Supply and remove the specimen.
  4) If it is necessary to remove the test jig.   5) Turn off the power switch on the front of the control unit.

 

  6) Turn off the power switch on the front of the control unit.