DCPD & FATIGUE TESTING

Direct Current Potential Drop (DCPD) testing is a widely accepted method for measuring crack growth or conducting crack initiation testing by applying electrical current to a specimen and measuring electric potential across the crack plane. Test specimens and fixturing utilize pull-through rod systems allowing use in Autoclaves, Tempressure Vessels, or Ambient Condition Test Chambers to simulate corrosive field conditions in High Temperature High Pressure (HPHT) environments. DCPD Systems are often paired with supporting equipment such as HPHT Circulating Flow Loops or Hydrogen Test Enclosures.

DCPD Equipment is an addition integrated into our Load Frame Systems. Electrically isolated fixturing isolates test specimens to prevent interference in measurements while the wires are passed through isolated fittings that maintain high pressure, high temperature seals. The drive system is capable of performing cyclic testing at extension rates up to 3.5 mm/sec and fatigue frequencies. Each testing system has a built-in data acquisition system with an intuitive setup interface to easily prepare and monitor any test.

TEST METHOD
ASTM E647

 

PRECISE
CRACK GROWTH MEASURMENT

 

CUSTOM TEST SOFTWARE
LABVIEW BASED

SYSTEM FEATURES

  • -Switchable DC Power Supply
  • -Precision Readings for Determining Crack Growth
  • -Capable of Measuring and Calculating Stress-Intensity Factors
  • -Isolated Specimen Grips and Feed-Through Fittings
  • -PC Controlled Data Acquisition System
  • -LabVIEW Based Software Tests
    •   Slow Strain Rate Test
    •   Fatigue Test
    •   Creep Test

TYPICAL APPLICATIONS

  • -Corrosion Fatigue Load Frames
      •   Slow Strain Rate Test
      •   Constant Load Test
      •   Fatigue Test
      •   Creep Test

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    CORTEST Headquarters   |   38322 Apollo Pkwy, Willoughby, Ohio 44094, USA   |   P: 440.942.1235   |   F: 440.942.0327   |   corrosion@cortest.com

    ©2022 CORTEST and all work represented. All rights reserved.

    CORTEST Headquarters

    38322 Apollo Pkwy, Willoughby, OH 44094, USA

    P: 440.942.1235   |   F: 440.942.0327

    corrosion@cortest.com

    ©2022 CORTEST and all work represented. All rights reserved.