Regularities of steel structure degradation of the "Novopskov-Aksay-Mozdok" gas main pipelines (Nevinnomysskaya CS) as well as the "Gorky-Center" pipelines (Gavrilovskaya CS) were studied. The revealed peculiarities of their degradation after long-term operation are suggested to be treated as a particular case of the damage accumulation classification (scheme) proposed by prof. H.M. Nykyforchyn. It is shown that the fracture surface consists of sections of ductile separation and localized zones of micro-spalling. The presence of the latter testifies to the hydrogen-induced embrittlement effect. However, the steels under investigation possess sufficiently high levels of the mechanical properties required for their further safe exploitation, both in terms of durability and cracking resistance.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6384571 | PMC |
| http://dx.doi.org/10.3390/ma12030491 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Water-based interventions in rheumatic diseases: mechanisms, benefits, and clinical applications.
Rheumatol Int
December 2024
Chair of Psychiatry and Narcology, Astana Medical University, Astana, Kazakhstan.
Chronic pain and restricted mobility, hallmark features of rheumatic diseases, substantially affect patients' quality of life, often resulting in physical disability and emotional distress. Given the long-term nature of these conditions, there is a growing interest in complementary therapeutic approaches, emphasizing the need to explore non-pharmacological treatments. Hydrotherapy, balneotherapy, and mud therapy have emerged as effective interventions to alleviate pain, reduce inflammation, improve joint mobility, and enhance overall physical and mental well-being.
View Article and Find Full Text PDFStudy on interfacial mechanical properties and structural detail damage of CRTS II slab ballastless track.
Sci Rep
December 2024
School of Civil and Hydraulic Engineering, Chongqing University of Science & Technology, Chongqing, 400074, China.
The CRTS (China Railway Track System) II slab ballastless track is widely utilized in high-speed railway construction owing to its excellent structural integrity. However, its interfacial performance deteriorates under high-temperature conditions, leading to significant damage in structural details. Furthermore, the evolution of its performance under these conditions has not been comprehensively studied.
View Article and Find Full Text PDFHyperelastic models for the human zona pellucida and their implications on shear modulus estimation in the clinical practice.
Sci Rep
December 2024
Fertility and IVF Unit, Department of Obstetrics and Gynecology, Soroka University Medical Center, Beer Sheva, 151, Israel.
It has long been speculated that the mechanical properties of the human oocyte can be an indicator for oocyte viability. Recent studies have demonstrated that embryo implantation rates, following Intra-Cytoplasmic Sperm Injection (ICSI) procedures, may be increased if the shear modulus value of the oocyte Zona Pellucida (ZP) is taken into consideration during embryo transfer. The shear modulus was determined by an iterative oocyte specific finite element (FE) analysis based on the clinical ICSI data.
View Article and Find Full Text PDFThe modification and adoption of biolubricants as alternatives in the automotive industry.
Environ Sci Pollut Res Int
December 2024
Department of Mechanical Engineering, K. Ramakrishnan College of Engineering, Samayapuram, Trichy, India.
Lubricants are pivotal in mitigating friction and wear between surfaces, ensuring seamless movement of solid objects. However, the predominant use of petroleum-based lubricants in the automotive and industrial ssectors raises substantial concerns for future energy security. The exploration of vegetable oils as an alternative lubricant in the automotive industry was motivated by the depletion of fossil fuels and escalating environmental concerns.
View Article and Find Full Text PDFEvaluation of emissions and performance of a diesel engine running on graphene nanopowder and diesel-biodiesel-ethanol blends.
Environ Sci Pollut Res Int
December 2024
Biosystem Engineering Department, Tarbiat Modares University (TMU), Tehran, Iran.
Today, there are environmental problems all over the world due to the emission of greenhouse gasses caused by the combustion of diesel fuel. The excessive consumption and drastic reduction of fossil fuels have prompted the leaders of various countries, including Iran, to put the use of alternative and clean energy sources on the agenda. In recent years, the use of biofuels and the addition of nanoparticles to diesel fuel have reduced pollutant emissions, improved the environment, and enhanced the physicochemical properties of the fuel.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!