MULTI-DIRECTIONAL CYCLIC DIRECT SIMPLE SHEAR TESTING MACHINE
CODE : T828
Designed for advanced characterization of soils under multi-directional cyclic loading, the MD-CSS replicates plane-strain simple shear while maintaining constant volume (undrained) conditions to evaluate liquefaction resistance, cyclic strength, modulus reduction, and damping.
Performs consolidation followed by static or cyclic simple shear with active/passive height control to enforce constant-specimen height and constant diameter using stacked rings or wire-reinforced membrane confinement.
Supports stress- or displacement-controlled cyclic shearing, enabling strain- or stress-path testing with user-defined amplitudes, cycle counts, and termination criteria for research and QC workflows.
Provides a broad deformation window from very small to large shear strains, suitable for modulus/damping curves and liquefaction studies under earthquake-like load histories.
Integrates vertical and horizontal force/displacement transducers for real-time closed-loop control and precise logging throughout consolidation and cyclic shearing.
Optimized for ALFA Cloud workflows (test parameters, time histories, peak/DA/SA strain measures), supporting traceable, standards-aligned reporting for laboratories and consultants.
