Trilab Pty Ltd Takes Delivery of a New Cyclic Direct Simple Shear Machine Trilab Pty Ltd has just taken delivery of a new Cyclic Direct Simple Shear machine. This will compliment their existing Critical State Triaxial testing equipment. The simple shear is currently being used on a major tailings testing project. Project featured in the article below is a Electromechanical Dynamic Cyclic Simple Shear Device (EMDCSS).