Shimadzu Corporation

Other

Nihon University

Noriaki Komine

Susumu Takahashi

Mitsuhiko Araki

Hidefumi Taguchi

Seat membersare held in a state of being movable with respect to first slide membersor second slide memberscorrespondingly. By rotating screwsin directions to increase the distances d between surfaces A of the first slide membersor the second slide membersand surfaces B of the seat members, chucksare moved in directions to increase the distance between the chucks to apply pretension to a test piece correspondingly. When backlash in a force transmission system from a support part to the respective chucksis eliminated, a biaxial tensile test is started.

Material testing machine that properly performs a tensile test on a test piece

When mounting a gripon a cross head, a pinand an adapterare removed from a joint. Then, a bossof the gripis inserted into a hollow partof the joint, and the pinis inserted into a through-holeformed in the bossof the gripand a hole partformed in a tubular bodyof the joint. When mounting a platenon the cross head, the adapteris mounted on the joint. In addition, the platenis mounted on the adapter. Further, a set screw is inserted into a hole partof the adapter

Jig mounting device for material testing machine

An adjusting unit in a feedback loop for controlling a hydraulically operated-type load mechanism consists of two portions both adapted to effect proportional action and derivative action. Weights are applied to these two portions independently. Hence, an output y can be made to follow sudden changes in a target value r with fast response without the occurrence of overshoots, and the effect of a disturbance input w is alleviated to a maximum. In addition, since integral action is not effected in the adjusting portions, the term of /s is not included in transfer functions of inputs and outputs, thereby realizing stability of control.

Growing community of inventors

Kyoto, Japan

Noriaki Komine