Impact and Fracture Toughness Properties of Structural Steels for Design Engineers

Details

• Creators:
  Hahin, Christopher
• Corporate Creators:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research
• Subject/TRT Terms:
  Alloying Elements Alloys Bridge Piers Bridges Charpy V-notch Test Chemical Composition Durability Energy Equations Fracture Properties Fracture Toughness Impact Impact Toughness Mathematical Prediction Prediction Equations Safety Steel Structures Temperature Toughness Transition Point Upper Shelf Energy

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• Publication/ Report Number:
  PRR Number 174
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Illinois
• Edition:
  Final Report, Jan 2020-Feb 2022
• Corporate Publisher:
  Illinois. Dept. of Transportation. Bureau of Materials and Physical Research
• Abstract:
  The energy absorption behavior of structural steels at a range of temperatures is important information to design, structural and materials engineers. Several historic examples of catastrophic failures which did not consider the energy absorption of steel at lower temperature are described. Impact toughness is related to fracture toughness, a quantifiable indicator that provides for prediction of safe conditions of structures subjected to stresses from static and cyclic loadings and impact loads. The general term structures include bridges, piers, sign and signal structures, light poles, and barriers subject to impact, or any operating machinery associated with the structure. The influence of alloying elements in structural steels on transition temperatures and energy absorption is described in this report. Equations to predict impact transition temperatures and upper shelf impact energies based on chemical composition are proposed to aid in the pre-selection of steels that are appropriate for any low temperature operating conditions where the structures or their operating machinery are located. Accuracies of the equations were compared with actual transition temperatures and upper shelf energies in the technical literature. Several equations to convert Charpy V-notch impact toughness into fracture toughness are also provided to evaluate effects of stresses, impact loads and crack sizes with respect to the safety and durability of the structure or its operating machinery.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:106c8035801b95c5d4599ada94de2bd05ab631135a9c37c1632592c16109a8c25644e72ebf2bb4f6a9d850a1b507966e95325985c4d6f75562903586ffadfd7d
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/87575/dot_87575_DS1.pdf
• File Type:
  [PDF - 875.28 KB ]