Custom Testing and R&D Lab Services
These fractures are characterized by the stable growth of a crack with little deformation in the plastic material. SCG testing involves accelerating the growth mechanism and can be done through elevated temperature, concentrated stress, constrained geometry, surfactants or some combination of these factors. These test methods are applicable to polyethylene (PE), polypropylene (PP) and polybutylene (PB) piping.
Rapid crack propagation (RCP) is a fast fracture type of failure. Cracks are thought to initiate at internal defects on an impact of impulse event and can travel long distances quickly. RCP occurs in pressurized systems with enough stored energy to drive cracks faster than energy is released. Cracks tend to have a smooth fracture surface. RCP is affected by temperature, energy driving force, material, pipe size and processing efforts. We can test a variety of pipe diameters including 4”, 8”, 10”, 12” and 110 mm.
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