Metriguard Inc.

Nathaniel D Darnall

James David Logan

Ryan D Baldwin

Timothy T Meekhof

Dean A Nelson

Peter A Siebold

David E Abbott

Wayne P Waldher

An apparatus for testing panel products in edgewise shear in which the shear stress is applied in a diagonal direction with a first rotational degree of freedom in a first grip means and a second rotational degree of freedom in a second grip means as a first loading configuration. A second loading configuration is provided in which the second rotational degree of freedom of the second grip means is locked in place and motion is prevented. A third preferred method of loading is available in which shear forces in a horizontal direction through a centerline of a specimen, with the centerline in the plane of the specimen and extending across a widest dimension of said specimen. Control and data collection are under computer control and operator safety is enhanced by a locking guard door which is electrically locked while the various parts of the machine are in motion.

Rail shear tester apparatus with multiple loading configurations

Growing community of inventors

Pullman, WA, United States of America

Nathaniel D Darnall