Uncertainties in mechanical testing (UNCERT)

Practical guides for uncertainties in mechanical testing

The Codes of Practice listed below were developed within UNCERT, a project partly funded by the EC's Standards, Measurement and Testing programme. Its aim was to simplify the way in which uncertainties for 17 mechanical tests on metallic materials are evaluated. These are intended for all those interested in measurement and testing and particularly for practicing engineers, technicians, and managers in the manufacturing and service sectors.

The UNCERT manual comprises six sections:

• Section 1:  Introduction to the evaluation of uncertainty
   
• Section 2:  Glossary of definitions and symbols
   
• Section 3:  Typical sources of uncertainty in materials testing
   
• Section 4:  Guidelines for the estimation of uncertainty for a series of tests
   
• Section 5:  Guidelines for reporting uncertainty
   
• Section 6: Individual Codes of Practice:
   
  • CoP 1: High cycle fatigue testing
  • CoP 2: Low cycle fatigue testing
  • Cop 3: Plane strain fracture toughness (K1C) testing
  • CoP 4: Crack tip opening displacement (CTOD) testing
  • CoP 5: Fatigue crack growth measurement
  • CoP 6: Charpy impact testing
  • CoP 7: Tensile testing
  • CoP 8: Compression testing
  • CoP 9: Bend testing
  • CoP 10: Creep testing
  • CoP 11: Notched-bar creep rupture testing
  • CoP 12: Double shear testing
  • CoP 13: Dynamic Young's modulus measurement
  • CoP 14: Hardness measurement
  • CoP 15: Residual stress measurement (hole drilling technique)
  • CoP 16: Poisson's ratio measurement (from tensile tests)
  • CoP 17: Ramberg-Osgood parameters (from tensile tests)

The UNCERT Partners acknowledge the financial support received from the European Commission, without which it would have been impossible to do this work.

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