Forces and strains during drop weight tear test
- Authors: Shtremel’ M.A.1, Arabei A.B.2, Glebov A.G.1, Abakumov A.I.3, Esiev T.S.4, Struin A.O.5, Sarychev B.A.6
-
Affiliations:
- NITU MISiS
- PAO Gazprom
- FGUP RFYaTs-VNIIEF
- OOO Gasprom VNIIGAZ
- OAO PosNITI
- OAO MMK
- Issue: Vol 2017, No 4 (2017)
- Pages: 339-349
- Section: Diagnostics and Mechanical Test Techniques
- URL: https://journals.rcsi.science/0036-0295/article/view/171464
- DOI: https://doi.org/10.1134/S0036029517040218
- ID: 171464
Cite item
Abstract
As follows from the results of drop weight tear tests (DWTT), modern strength class K65 steels for gas-main pipelines exhibit an almost 100% fraction of ductile component in a fracture surface. The results of ground tests demonstrate that the lengths of extended fracture of a pipe made of such steels from different suppliers are substantially different. The possibility of extracting other characteristics from DWTT tests of full-thickness notched specimens and the information content in them are estimated. High-speed detection of the strain and crack growth is performed during static and dynamic loading. As follows from an analysis of fracture kinematics and force and energy balance, fracture is a multistage process, where mechanisms change during crack growth.
About the authors
M. A. Shtremel’
NITU MISiS
Author for correspondence.
Email: str@mfp.misis.ru
Russian Federation, Moscow, 119991
A. B. Arabei
PAO Gazprom
Email: str@mfp.misis.ru
Russian Federation, Moscow, 117997
A. G. Glebov
NITU MISiS
Email: str@mfp.misis.ru
Russian Federation, Moscow, 119991
A. I. Abakumov
FGUP RFYaTs-VNIIEF
Email: str@mfp.misis.ru
Russian Federation, Sarov, 607188
T. S. Esiev
OOO Gasprom VNIIGAZ
Email: str@mfp.misis.ru
Russian Federation, Moscow, 115583
A. O. Struin
OAO PosNITI
Email: str@mfp.misis.ru
Russian Federation, Chelyabinsk, 454139
B. A. Sarychev
OAO MMK
Email: str@mfp.misis.ru
Russian Federation, Magnitogorsk, 455019
![](/img/style/loading.gif)