Illinois Tool Works Inc.

Keith J Tremblay

Richard A Conti

Nicholas H Bradshaw

An example material testing system includes: a pneumatic grip configured to grip a specimen under test based on a supplied pressure; and a processor configured to control the pressure supplied to the pneumatic grip by repeatedly: controlling a fill valve to increase the supplied pressure; allowing the supplied pressure to stabilize after each increase; and adjusting a pressurization time based on comparing an expected pressure increase to an actual pressure increase during the pressurization.

Pneumatic grip systems and material testing systems including pneumatic grip systems

Methods and systems are provided for a torsional material testing system, which includes a rotatable actuator, such as a motor, configured to perform a torsional material testing operation. During a torsional material testing operation, a virtual interlock is configured to engage or disengage with the actuator to prevent or allow rotational movement of the actuator (e.g., during a setup state or during a torsional material testing operation, respectively). A control circuitry is employed to control the virtual interlock as well as the torsional testing system based on one or more operational states before, during, or after a material testing process.

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North Attleboro, MA, United States of America

Keith J Tremblay