Full Notch Creep Test (FNCT)
The OCS Full Notch Creep Test (FNCT) is a widely used method of classifying polyethylene materials in terms of their slow crack growth behavior under accelerated conditions. The test is performed by loading a circumferentially notched polyethylene sample in a tempered wetting agent with defined tensile stress. The time until the sample breaks are measured and the results are used to classify the material’s slow crack growth behavior.
The FNCT is a valuable tool for ensuring the quality of polyethylene materials. It can identify fabrics susceptible to slow crack growth, leading to premature failure. The FNCT can also monitor the production process and ensure that the materials meet quality standards.
The FNCT is a valuable tool for ensuring the quality of polyethylene materials. It can identify fabrics susceptible to slow crack growth, leading to premature failure. The FNCT can also monitor the production process and ensure that the materials meet quality standards.
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Features
Specifications
Features
Specifications
| 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 |
| 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 |