Structural engineering

Split-Hopkinson pressure bar

Composite number

Engineering

Strain rate

Composite material

Materials science

Direct shear test

Fiber

Shear (geology)

Applied Mechanics

A new experimental method is developed to determine the fiber crush strength (SFC) and fiber shear strength (SFS) of composite materials following a punch shear test methodology. The material parameters SFC and SFS are used to model the damage behavior of thick-section composites as described in the LS-Dyna material model MAT_COMPOSITE_DMG_MSC, aka MAT162. The quasi-static experimental methodology is further extended to investigate the rate effect on SFS using a Hopkinson bar direct impact punch shear test method.

A New Experimental Technique to Characterize the Fiber Crush and Fiber Shear Behavior of Composites at Quasi-Static and High Rates of Strain