HIGH-SPEED TENSILE AND COMPRESSION TESTER

摘要

PURPOSE:To test easily materials by a high-speed load with high precision by operating an attaching and detaching device to switch the tester to the high-speed load providing state where a loading bar can be moved relatively to a load supporting stand. CONSTITUTION:A spring 22 is interposed between a spring supporting part 18A of a load supporting base 16 and a spring receiving part 21 of a load bar 19, and a dummy test piece is attached to the part of a test piece 13. An attaching and detaching device 23 is detached from the load bar 19, and a cross head 12 is lowered in this state and the spring 22 is contracted to provide a certain elastic state to the spring 22. In such a state, the load bar 19 is fixed to the supporting stand 16 by the device 23 to set the initialized state. The head 12 is raised slightly while keeping such a state to release the load acting upon the dummy test piece, and the actual test piece 13 is set instead of the dummy test piece. The device 23 is operated to switch the device to the high- speed load providing state where the load bar 19 can be moved relatively to the stand 16. The load bar 19 is moved in a high speed by the action of the elastic force of the spring 22, and a high-speed tensile load is provided to the test piece 13 to test it with high precision by the high-speed load.