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 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.

Testable Raw Materials

  • Polyethylene materials

Features

  • 15 sample stations with independent tensile stress adjustment and data acquisition
  • Load application through easily adjustable lever weight system
  • Precise adjustment of tensile stress through electronic force sensor
  • Uniform bath temperature control through extensive bath insulation
  • Exhaust air connections for targeted vapour extraction
  • Continuous pH value measurement with adjustable warning and alarm thresholds
  • No time limit on test times, time resolution: 1 second (real time)
  • Operation via touch panel with data trend as well as optical and acoustic alarm functions
  • High chemical resistance of the material used (stainless steel)

Sales Team

T +49 2302 95622-0
F +49 2302 95622-33
info@ocsgmbh.com
www.ocsgmbh.com

Address

OCS Optical Control Systems GmbH
Wullener Feld 24
58454 Witten
Germany

Technical Details

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
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Optional

  • Customer-specific data preparation and transfer
  • Remote control (via communication protocol or digital I/O)