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The OCS Full Notch Creep Test (FNCT) is a widely used method of classifying polyethylene materials in terms of their slow crack growth behaviour under accelerated conditions. A circumferentially notched body is loaded in a tempered wetting agent with a defined tensile stress, and the time until a break occurs is measured.
| Tensile force range (infinitely variable pull arm system with 115–315 N) | 2.5–6.5 MPa for samples 10 × 10 × 100 mm with notch depth of 1.6 mm |
| Tensile force range (infinitely variable pull arm system with 115–315 N) | 15–40 MPa for samples 6 × 6 × 90 mm with notch depth of 1.6 mm |
| Force measurement | Electronic force sensor with a resolution of 0.01 N |
| Fluid volume | Approx. 55 l |
| Level control | Stainless steel float sensors and magnetic valves |
| Inlet pressure range for the supply of demineralised water | 0.2–8 bar (3–116 psi) |
| Communication protocol | MODBUS (RTU, TCP/IP), PROFIBUS, PROFINET, OPC (Server/Client), CSV file, customer-specific |
