Influence of available impact energy of the testing macnine on drop weight tear test characteristics of high toughness pipeline steels

Authors

  • A. D. Lyuchkov State Enterprise "Research and design-technology institute of the tube industry Ya.Yu. Osada by name",, Ukraine
  • V. S. Vakhrusheva State Higher Education Establishment “Pridniprovsk State Academy of Civil Engineering and Architecture”, Ukraine
  • I. F. Pemov 3 Branch of Central Scientific Research Institute of Ferrous Metallurgy, Ukraine
  • O. Yu. Maqyboroda State Higher Education Establishment “Pridniprovsk State Academy of Civil Engineering and Architecture”, Ukraine
  • A. A. Ivanova State Higher Education Establishment “Pridniprovsk State Academy of Civil Engineering and Architecture”, Ukraine

Keywords:

, drop weight tear test, available impact energy of the testing machine, shear fraction quantity, absorved energy, metal hardening, high toughness

Abstract

Problem statement. The methodological questions connected to Drop Weight Tear Test (DWTT) of high toughness plates and pipes of high pressure gas pipelines are considered in this article. The imperfection of operating standards regarding to the choice of the values of available impact energy providing correct carrying out tests of any size of steel is marked. Purpose. Appraisal of influence of the available impact energy on the results of DWTT on indicators of shear fraction quantity and the absorbed energy of destruction the full-thickness samples high-toughness pipe steels from among the most widely applied in modern construction of gas pipelines of high pressure. Material and methodology. Plates and basic metal of pipes grade X65, X70 and X80 different thickness were researched. DWTT were carried out on Zwick test machines of various capacities. Results. Boundaries of application of recommendations of the APIRP5L3 and the EN10274 standards at the choice of available energy value of impact testing machine to DWTT of pipe steels with thickness 25 mm and less. Scientific novelty. In this article was estimated influence of the available impact energy on the results of DWTT of high toughness pipe steels. Practical value. Recommendations about the choice available impact energy on results of DWTT will increase of test exactness and reliability of resistance appraisal of gas pipelines to destruction.


Author Biographies

A. D. Lyuchkov, State Enterprise "Research and design-technology institute of the tube industry Ya.Yu. Osada by name",

Cand. Sc. (Phys.-Math.), Lead.Res. Fell.

V. S. Vakhrusheva, State Higher Education Establishment “Pridniprovsk State Academy of Civil Engineering and Architecture”

Department of Materials and Materials Processing, Dr. Sc. (Tech.), Prof.

I. F. Pemov, 3 Branch of Central Scientific Research Institute of Ferrous Metallurgy

Sen. Res. Fell.

O. Yu. Maqyboroda, State Higher Education Establishment “Pridniprovsk State Academy of Civil Engineering and Architecture”

Department of Materials and Materials Processing, Master

A. A. Ivanova, State Higher Education Establishment “Pridniprovsk State Academy of Civil Engineering and Architecture”

Department of Materials and Materials Processing, Master

References

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Published

2017-11-03

Issue

No. 3 (2017): Metal Science and Heat Treatment of Metals

Section

Technical science

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