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International Journal for Research Trends and Innovation
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ISSN Approved Journal No: 2456-3315 | Impact factor: 8.14 | ESTD Year: 2016
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Impact Factor : 8.14

Issue per Year : 12

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Paper Title: A new technology for the tunneling machinery; Part II: Rock fatigue damage mechanism by the DCD cutting technology
Authors Name: Nazife Erarslan
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IJRTI_184392
Published Paper Id: IJRTI2210069
Published In: Volume 7 Issue 10, October-2022
DOI:
Abstract: Comparative experiments between the dynamic cutting tests using the Dynamic Cutting Discs (DCD) fatigue technology and the traditional (non-oscillating) hard rock cutting process are determined as the main purpose of this study to develop a novel hard rock cutting technology. When the DCD rock cutting test results are compared with the TBM disc test results working with the vibration-free conventional discs, the cutting forces, and the Specific Energy (SE) were found to decrease by 25-30% with the increased amount of excavated material by 200%. It was attained that the magnitude of the average normal force FN decreased more than the average cutting force FR when the disc vibrated at 45 Hz. Moreover, it was determined that the cutting forces decreased significantly as the cyclic loading frequency increased. More cracks occurred with the rock fatigue mechanism and the FPZ resulting in more rock chips than with the non-oscillating conventional cutter. This is a very effective finding because the most generally accepted parameters for evaluating excavation efficiency in mechanical rock cutting research are the cutting forces and the Specific Energy (SE) values calculated from the amount of rock material removed. The experimental and numerical analysis results showed that there are two effective damage mechanisms in the rock/tool interaction zone that cause these cutting force reductions and obtaining more cut material: rock fatigue damage mechanism and cyclic indentation damage mechanism. In conclusion, it is believed that this high energy saving rate obtained from the research results will be sustainable in scientific, economic, commercial, and social areas.
Keywords: DCD dynamic rock cutting technology, tunnelling, and rock fatigue, TBMs and energy efficiency, oscillating disc cutters and TBMs, sustainability and tunnel boring
Cite Article: "A new technology for the tunneling machinery; Part II: Rock fatigue damage mechanism by the DCD cutting technology ", International Journal of Science & Engineering Development Research (www.ijrti.org), ISSN:2455-2631, Vol.7, Issue 10, page no.517 - 524, October-2022, Available :http://www.ijrti.org/papers/IJRTI2210069.pdf
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ISSN: 2456-3315 | IMPACT FACTOR: 8.14 Calculated By Google Scholar| ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.14 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publication Details: Published Paper ID: IJRTI2210069
Registration ID:184392
Published In: Volume 7 Issue 10, October-2022
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Page No: 517 - 524
Country: KARABAĞLAR, İZMİR, Türkiye
Research Area: Engineering
Publisher : IJ Publication
Published Paper URL : https://www.ijrti.org/viewpaperforall?paper=IJRTI2210069
Published Paper PDF: https://www.ijrti.org/papers/IJRTI2210069
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ISSN: 2456-3315
Impact Factor: 8.14 and ISSN APPROVED
Journal Starting Year (ESTD) : 2016

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