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  1. Exploring the impact of applying activated fluxes in TIG welding of AISI 304 stainless steel

    Article • Welding International, October 2026, Taylor & Francis

    Prof. Dr. Santanu Das

  2. SELECTION OF APPROPRIATE PROCESS PARAMETERS FOR ENHANCEMENT OF PENETRATION IN TIG WELDING OF 304H STAINLESS STEEL FLATS: AN AHP-BASED APPROACH

    Article • International Journal of the Analytic Hierarchy Process, January 2026, Creative Decisions Foundation

    Prof. Dr. Santanu Das

  3. Multi-attributes Inventory Management Policy for a Pump Manufacturing Industry Using Modified Pythagorean Fuzzy TODIM Approach

    Article • October 2025, Springer Science + Business Media

    Prof. Dr. Santanu Das

  4. Prognosis of the Geometry of Weld Bead Using Artificial Neural Networks Algorithm

    Article • October 2025, Springer Science + Business Media

    Prof. Dr. Santanu Das

  5. Surface Preparation with Abrasive Jet Erosion on SS 316 Using Silicon Carbide

    Article • October 2025, Springer Science + Business Media

    Prof. Dr. Santanu Das

  6. Application of the Analytical Hierarchy Process: Case I- Selection of a Book on Mathematics

    Article • Indian Science Cruiser, June 2025, Institute of Science, Education and Culture, Kolkata

    Prof. Dr. Santanu Das

  7. Application of the Analytical Hierarchy Process: Case II- Selection of a Smart Phone

    Article • Indian Science Cruiser, June 2025, Institute of Science, Education and Culture, Kolkata

    Prof. Dr. Santanu Das

  8. Supervised Machine Learning Models for Predicting SS304H Welding Properties Using TIG, Autogenous TIG, and A-TIG

    Article • Crystals, June 2025, MDPI AG

    Prof. Dr. Santanu Das

  9. Improving grindability of Ti–6Al–4V through applying environmentally benign cutting fluids using SiC wheel

    Article • Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, May 2025, SAGE Publications

    Prof. Dr. Santanu Das

  10. Predicting A-TIG weld bead geometry of 304 stainless steel using artificial neural networks

    Article • Discover Mechanical Engineering, April 2025, Springer Science + Business Media

    Prof. Dr. Santanu Das

  11. Application of Neural Networks for Prediction of Bead Geometry in ATIG Welding

    Article • December 2024, Springer Science + Business Media

    Prof. Dr. Santanu Das

  12. A Review on Improving Grindability and Eco-Friendliness of Surface Grinding

    Article • Indian Science Cruiser, November 2024, Institute of Science, Education and Culture, Kolkata

    Prof. Dr. Santanu Das

  13. Numerical analysis of stress and distortion in bulk deposited structures of Inconel 625 alloy: Influence of deposition strategies

    Article • CIRP Journal of Manufacturing Science and Technology, July 2024, Elsevier

    Prof. Dr. Santanu Das

  14. Editorial

    Article • Indian Welding Journal, May 2024, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  15. AUGMENTATION OF DEPTH OF PENETRATION AND PRODUCTIVITY BENEFITS OF ATIG WELDS USING THE AHP

    Article • International Journal of the Analytic Hierarchy Process, February 2024, Creative Decisions Foundation

    Prof. Dr. Santanu Das

  16. Editorial

    Article • Indian Welding Journal, July 2023, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  17. Editorial

    Article • Indian Welding Journal, April 2023, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  18. Influence of TAKT Time on Optimization of Cost of Production Through Fixation of Workstations

    Article • January 2023, Springer Science + Business Media

    Prof. Dr. Santanu Das

  19. Productivity Benefits in Employing SiO2 Flux-Based Activated TIG Welding for Joining Thicker Components

    Article • January 2023, Springer Science + Business Media

    Prof. Dr. Santanu Das

  20. Editorial

    Article • Indian Welding Journal, January 2023, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  21. Surface Preparation for Coating and Erosion MRR of SS 304 Using Silicon Carbide Abrasive Jet

    Article • Lubricants, December 2022, MDPI AG

    Prof. Dr. Santanu Das

  22. Influence of Roughness on Micropolar Lubricated Finite Porous Journal Bearing

    Article • October 2022, Springer Science + Business Media

    Prof. Dr. Santanu Das

  23. Effect of Heat Input on Corrosion Resistance of 316 Austenitic Stainless Steel Cladding on Low-Carbon Steel Plate

    Article • September 2022, Springer Science + Business Media

    Prof. Dr. Santanu Das

  24. Editorial

    Article • Indian Welding Journal, April 2022, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  25. A numerical model to predict the powder–binder separation during micro‐powder injection molding

    Article • Journal of the American Ceramic Society, February 2022, Wiley

    Prof. Dr. Santanu Das

  26. ANN-FPA Based Modelling and Optimization of Drilling Burrs Using RSM and GA

    Article • January 2022, Springer Science + Business Media

    Prof. Dr. Santanu Das

  27. Editorial

    Article • Indian Welding Journal, January 2022, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  28. Productivity improvement in butt joining of thick stainless steel plates through the usage of activated TIG welding

    Article • SN Applied Sciences, March 2021, Springer Science + Business Media

    Prof. Dr. Santanu Das

  29. An investigation on formation of burrs during milling of aluminium alloy under wet condition

    Article • Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, November 2020, SAGE Publications

    Prof. Dr. Santanu Das

  30. Introducing a New Supply Chain Management Concept by Hybridizing TOPSIS, IoT and Cloud Computing

    Article • Journal of The Institution of Engineers (India) Series C, September 2020, Springer Science + Business Media

    Prof. Dr. Santanu Das

  31. Effect of Polarity and Oxide Fluxes on Weld-bead Geometry in Activated Tungsten Inert Gas (A-TIG) Welding

    Article • Journal of Welding and Joining, August 2020, The Korean Welding and Joining Society

    Prof. Dr. Santanu Das

  32. Square grid deformation in wedge indentation: a new mathematical approach

    Article • SN Applied Sciences, June 2020, Springer Science + Business Media

    Prof. Dr. Santanu Das

  33. Grinding titanium alloys applying small quantity lubrication

    Article • SN Applied Sciences, April 2020, Springer Science + Business Media

    Prof. Dr. Santanu Das

  34. A grey-fuzzy approach to optimize the cutting parameters of slab milling operation

    Article • January 2020, American Institute of Physics

    Prof. Dr. Santanu Das, Dr. Partha Protim Das

  35. Genetic algorithm-based drilling burr minimization using adaptive neuro-fuzzy inference system and support vector regression

    Article • Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, December 2019, SAGE Publications

    Prof. Dr. Santanu Das

  36. Abrasive Jet Machining of Soda Lime Glass and Laminated Glass Using Silica Sand

    Article • November 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  37. Studying hydrodynamic steady-state porous misaligned bearings in micropolar lubricant

    Article • Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, September 2019, SAGE Publications

    Sanjoy Das, Prof. Dr. Santanu Das

  38. Modeling of Face Milling Operation for Assessing Cutter Trajectory and Cutting Forces

    Article • Journal of The Institution of Engineers (India) Series C, August 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  39. Dependency of Bead Geometry Formation During Weld Deposition of 316 Stainless Steel Over Constructional Steel Plate

    Article • July 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  40. Development of Plant Layout for Improving Organizational Effectiveness by Hybridizing GT, TOPSIS and SLP

    Article • July 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  41. Porous Hydrodynamic Journal Bearing Analysis Using Micropolar Fluid in Steady-State Condition

    Article • Tribology Online, May 2019, Japanese Society of Tribologists

    Prof. Dr. Santanu Das

  42. A Novel Small Quantity Lubrication Method to Assess Grindability of Inconel 718

    Article • January 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  43. Application of the modified similarity-based method for multi-criteria inventory classification

    Article • Decision Science Letters, January 2019, Growing Science

    Prof. Dr. Santanu Das

  44. Effect of Dressing Infeed on Alumina Wheel During Grinding Ti–6Al–4V Under Varying Depth of Cut

    Article • January 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  45. Evaluation Criteria of Project Risk and Decision Making Through Beta Analysis and TOPSIS Towards Achieving Organizational Effectiveness

    Article • January 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  46. Influence of Heat Input on Corrosion Resistance of Duplex Stainless Steel Cladding on Low-Alloy Steel by FCAW

    Article • January 2019, Springer Science + Business Media

    Prof. Dr. Santanu Das

  47. Editorial

    Article • Indian Welding Journal, January 2019, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  48. Impact of dressing infeed on SiC wheel for grinding Ti-6Al-4V

    Article • Materials and Manufacturing Processes, November 2018, Taylor & Francis

    Prof. Dr. Santanu Das, Pranab Kumar Kundu

  49. Anticorrosion Performance of FCAW Cladding with Regard to the Influence of Heat Input

    Article • Journal of Welding and Joining, October 2018, The Korean Welding and Joining Society

    Prof. Dr. Santanu Das

  50. Mechanical and Tribological Behavior of ZrB2-TiB2 System Prepared by Mechanical Activation Spark Plasma Sintering Technique

    Article • Journal of Materials Engineering and Performance, October 2018, Springer Science + Business Media

    Prof. Dr. Santanu Das

  51. Editorial

    Article • Indian Welding Journal, October 2018, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  52. Editorial

    Article • Indian Welding Journal, July 2018, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  53. Studying the effects of using liquid carbon dioxide and soap water in grinding Inconel 718

    Article • IOP Conference Series Materials Science and Engineering, June 2018, Institute of Physics Publishing

    Prof. Dr. Santanu Das

  54. Experimental investigation on enhancing grindability using alkaline-based fluid for grinding Ti-6Al-4V

    Article • Materials and Manufacturing Processes, May 2018, Taylor & Francis

    Prof. Dr. Santanu Das, Pranab Kumar Kundu

  55. Effect of Heat Input on Geometry of Austenitic Stainless Steel Weld Bead on Low Carbon Steel

    Article • Journal of The Institution of Engineers (India) Series C, May 2018, Springer Science + Business Media

    Prof. Dr. Santanu Das

  56. Present status and some critical issues of abrasive jet materials processing: a review

    Article • Procedia Manufacturing, January 2018, Elsevier

    Prof. Dr. Santanu Das

  57. Investigation of structural network and mechanical properties of Titanium silicon nitride (TiSiN) thin films

    Article • Journal of Alloys and Compounds, January 2018, Elsevier

    Dr. Bibhu Prasad Swain, Prof. Dr. Santanu Das, Dr. SANTANU DAS

  58. Abrasive jet system and its various applications in abrasive jet machining, erosion testing, shot-peening, and fast cleaning

    Article • Materials Today Proceedings, January 2018, Elsevier

    Prof. Dr. Santanu Das

  59. Effect of small quantity lubrication on grindability of hardened AISI 4340 steel

    Article • International Journal of Abrasive Technology, January 2018, Inderscience Publishers

    Prof. Dr. Santanu Das

  60. Exploring Grind Ability Of Inconel 718 Using Small Quantity Cooling And Lubrication Technique

    Article • Materials Today Proceedings, January 2018, Elsevier

    Prof. Dr. Santanu Das

  61. Grinding Titanium grade 1 alloy with an alumina wheelusing soap water

    Article • Procedia Manufacturing, January 2018, Elsevier

    Prof. Dr. Santanu Das

  62. Optimization of Pulsed Nd:YVO4 Laser Marking of AISI 304 Stainless Steel Using Response Surface Methodology

    Article • Materials Today Proceedings, January 2018, Elsevier

    Prof. Dr. Santanu Das

  63. Rheological Behavior of 316L Stainless Steel Feedstock for µ-MIM

    Article • Materials Today Proceedings, January 2018, Elsevier

    Prof. Dr. Santanu Das

  64. Study on erosion wear of steels under varying abrasive jet

    Article • Materials Today Proceedings, January 2018, Elsevier

    Prof. Dr. Santanu Das

  65. Editorial

    Article • Indian Welding Journal, January 2018, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  66. Investigation of mechanical properties of CVD grown titanium silicon nitride thin films under reduced atmosphere

    Article • Applied Physics A, December 2017, Springer Science + Business Media

    Dr. Bibhu Prasad Swain, Prof. Dr. Santanu Das

  67. Investigation of Titanium Silicon Nitride: A Review

    Article • October 2017, Springer Science + Business Media

    Dr. Bibhu Prasad Swain, Prof. Dr. Santanu Das

  68. Editorial

    Article • Indian Welding Journal, October 2017, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  69. A UNIFIED DECISION FRAMEWORK FOR INVENTORY CLASSIFICATION THROUGH GRAPH THEORY

    Article • International Journal of the Analytic Hierarchy Process, September 2017, Creative Decisions Foundation

    Prof. Dr. Santanu Das

  70. Development of an anti-loosening fastener and comparing its performance with different other threaded fasteners

    Article • Sadhana, September 2017, Springer Science + Business Media

    Prof. Dr. Santanu Das

  71. Improvement of lubrication and cooling in grinding

    Article • Materials and Manufacturing Processes, August 2017, Taylor & Francis

    Prof. Dr. Santanu Das

  72. Machining Performance of Hot-Pressed Carbon Nanotube Reinforced Alumina Cutting Tool Insert

    Article • Journal of The Institution of Engineers (India) Series C, June 2017, Springer Science + Business Media

    Prof. Dr. Santanu Das

  73. Structural and mechanical properties of CVD deposited titanium aluminium nitride (TiAlN) thin films

    Article • Applied Physics A, May 2017, Springer Science + Business Media

    Dr. Bibhu Prasad Swain, Prof. Dr. Santanu Das

  74. An Investigation on Machinability during Turning Hardened Steel in Dry Condition

    Article • Journal of The Institution of Engineers (India) Series C, May 2017, Springer Science + Business Media

    Prof. Dr. Santanu Das

  75. Editorial

    Article • Indian Welding Journal, April 2017, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  76. Exploring Machinability of AISI 4340 Steel with Coated Carbide Inserts

    Article • January 2017, Atlantis Press

    Prof. Dr. Santanu Das

  77. Editorial

    Article • Indian Welding Journal, January 2017, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  78. Editorial

    Article • Indian Welding Journal, October 2016, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  79. SUPPLIER SELECTION FOR A PUMP MANUFACTURING ORGANIZATION BY HYBRID AHP-TOPSIS TECHNIQUE AND ITS IMPACT ON INVENTORY

    Article • International Journal of the Analytic Hierarchy Process, September 2016, Creative Decisions Foundation

    Prof. Dr. Santanu Das

  80. Editorial

    Article • Indian Welding Journal, July 2016, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  81. Experimental investigation and modelling on air layer formation around a rotating grinding wheel

    Article • Cogent Engineering, May 2016, Taylor & Francis

    Prof. Dr. Santanu Das

  82. Modeling of Closed-Die Forging for Estimating Forging Load

    Article • Journal of The Institution of Engineers (India) Series C, May 2016, Springer Science + Business Media

    Prof. Dr. Santanu Das

  83. Editorial

    Article • Indian Welding Journal, April 2016, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  84. Micromechanics based modelling of deformation behaviour of grain refined rheocast Al–7Si–0.3Mg alloy

    Article • Materials Science and Technology, February 2016, Taylor & Francis

    Prof. Dr. Santanu Das

  85. Influence of heat input on weld bead geometry using duplex stainless steel wire electrode on low alloy steel specimens

    Article • Cogent Engineering, February 2016, Taylor & Francis

    Prof. Dr. Santanu Das

  86. Improved densification and mechanical properties of spark plasma sintered carbon nanotube reinforced alumina ceramics

    Article • Materials Chemistry and Physics, February 2016, Elsevier

    Prof. Dr. Santanu Das

  87. Antiloosening ability of 5/8 inch stainless steel BSW threaded fasteners

    Article • January 2016, American Institute of Physics

    Prof. Dr. Santanu Das

  88. An Investigation on Slab Milling Operation to Find Out Optimum Cutting Parameters

    Article • January 2016, Springer Science + Business Media

    Prof. Dr. Santanu Das

  89. Comparison of Grinding Performance Under Different Eco-Friendly Environment

    Article • January 2016, Springer Science + Business Media

    Prof. Dr. Santanu Das

  90. Editorial

    Article • Indian Welding Journal, January 2016, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  91. SELECTION OF APPROPRIATE FLUID DELIVERY TECHNIQUE FOR GRINDING TITANIUM GRADE-1 USING THE ANALYTIC HIERARCHY PROCESS

    Article • International Journal of the Analytic Hierarchy Process, December 2015, Creative Decisions Foundation

    Prof. Dr. Santanu Das

  92. An Investigation on Turning Hardened Steel Using Different Tool Inserts

    Article • Materials and Manufacturing Processes, December 2015, Taylor & Francis

    Prof. Dr. Santanu Das

  93. Preamble

    Article • Indian Welding Journal, October 2015, The Indian Institute of Welding

    Prof. Dr. Santanu Das

  94. Microscale deformation behavior of rheocast Al-7Si-0.3 Mg alloy

    Article • Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, July 2015, SAGE Publications

    Prof. Dr. Santanu Das

  95. Indentation size effect and wear characteristics of spark plasma sintered, hard MWCNT/Al2O3nanocomposites

    Article • Advances in Applied Ceramics Structural Functional and Bioceramics, May 2015, Taylor & Francis

    Prof. Dr. Santanu Das

  96. Deformation behaviour of Rheocast A356 Al alloy at microlevel considering approximated RVEs

    Article • Metals and Materials International, March 2015, Springer Science + Business Media

    Prof. Dr. Santanu Das

  97. Appropriate application of pneumatic barrier for improving grinding performance

    Article • International Journal of Abrasive Technology, January 2015, Inderscience Publishers

    Prof. Dr. Santanu Das

  98. Minimization of exit burr in face milling of medium carbon steel by exit edge beveling

    Article • Production Engineering, May 2014, Springer Science + Business Media

    Prof. Dr. Santanu Das

  99. Observation of Drilling Burr and Finding out the Condition for Minimum Burr Formation

    Article • International Journal of Manufacturing Engineering, January 2014, Hindawi Publishing Corporation

    Prof. Dr. Santanu Das

  100. Optimization of Drilling Parameters to Minimize Burr by Providing Back-up Support on Aluminium Alloy

    Article • Procedia Engineering, January 2014, Elsevier

    Prof. Dr. Santanu Das

  101. Effect of fluid concentration using a multi-nozzle on grinding performance

    Article • International Journal of Abrasive Technology, January 2014, Inderscience Publishers

    Prof. Dr. Santanu Das

  102. Improving grinding fluid delivery using pneumatic barrier and compound nozzle

    Article • Production Engineering, November 2013, Springer Science + Business Media

    Prof. Dr. Santanu Das

  103. On Reduction of Formation of Burr in Face Milling of 45C8 Steels

    Article • Materials and Manufacturing Processes, May 2013, Taylor & Francis

    Prof. Dr. Santanu Das

  104. Effect of Process Parameters on Clad Quality of Duplex Stainless Steel Using GMAW Process

    Article • Transactions of the Indian Institute of Metals, March 2013, Springer Science + Business Media

    Prof. Dr. Santanu Das

  105. Improving Grindability of Inconel 600 Using Alumina Wheel through Pneumatic Barrier Assisted Fluid Application

    Article • Advanced Materials Research, December 2012, Trans Tech Publications

    Prof. Dr. Santanu Das

  106. Development of a Grinding Fluid Delivery Technique and Its Performance Evaluation

    Article • Materials and Manufacturing Processes, April 2012, Taylor & Francis

    Prof. Dr. Santanu Das

  107. Burr Minimization in Shaping of Aluminium Alloy-Through Experimental and Stress Analysis Approach

    Article • Applied Mechanics and Materials, October 2011, Trans Tech Publications

    Prof. Dr. Santanu Das

  108. Burr minimization in face milling: an edge bevelling approach

    Article • Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, September 2011, SAGE Publications

    Prof. Dr. Santanu Das

  109. Improving grinding performance by controlling air flow around a grinding wheel

    Article • International Journal of Machine Tools and Manufacture, September 2011, Elsevier

    Prof. Dr. Santanu Das

  110. Cladding development

    Article • Reason-A Technical Journal, July 2011, Kolyani Government Engineering College

    Prof. Dr. Santanu Das

  111. Formation of a significantly less stiff air-layer around a grinding wheel pasted with rexine leather

    Article • International Journal of Precision Technology, January 2011, Inderscience Publishers

    Prof. Dr. Santanu Das

  112. An investigation on the anti-loosening characteristics of threaded fasteners under vibratory conditions

    Article • Mechanism and Machine Theory, August 2010, Elsevier

    Prof. Dr. Santanu Das

  113. Influence of Edge Bevelling on Burr Formation in Face Milling of an Aluminium Alloy

    Article • January 2010, Springer Science + Business Media

    Prof. Dr. Santanu Das

  114. Study of the Behavior of Air Flow around a Grinding Wheel under the Application of Pneumatic Barrier

    Article • January 2010, Springer Science + Business Media

    Prof. Dr. Santanu Das

  115. Predictive Modeling and Investigation on the Formation of Stiff Air-Layer around the Grinding Wheel

    Article • Advanced Materials Research, December 2009, Trans Tech Publications

    Prof. Dr. Santanu Das

  116. Estimating the effect of cutting parameters on surface finish and power consumption during high speed machining of AISI 1045 steel using Taguchi design and ANOVA

    Article • Production Engineering, September 2008, Springer Science + Business Media

    Prof. Dr. Santanu Das

  117. Micro-Electric Discharge Machining in Standard Setup

    Article • January 2007, Springer Science + Business Media

    Prof. Dr. Santanu Das

  118. An ant colony algorithm for multi-user detection in wireless communication systems

    Article • June 2005, ACM (Association for Computing Machinery)

    Prof. Dr. Santanu Das

  119. Application of the analytic hierarchy process for estimating the state of tool wear

    Article • International Journal of Machine Tools and Manufacture, January 2003, Elsevier

    Prof. Dr. Santanu Das

  120. A simple approach for on-line tool wear monitoring using the analytic hierarchy process

    Article • Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, January 1997, SAGE Publications

    Prof. Dr. Santanu Das

  121. Neural-networks-based tool wear monitoring in turning medium carbon steel using a coated carbide tool

    Article • Journal of Materials Processing Technology, January 1997, Elsevier

    Prof. Dr. Santanu Das

  122. Force Parameters for On-line Tool Wear Estimation: A Neural Network Approach

    Article • Neural Networks, December 1996, Elsevier

    Prof. Dr. Santanu Das

  123. Evaluation of wear of turning carbide inserts using neural networks

    Article • International Journal of Machine Tools and Manufacture, July 1996, Elsevier

    Prof. Dr. Santanu Das

  124. Effect of Edge Beveling on Burr Formation in Face Milling

    Article • Springer Science + Business Media

    Prof. Dr. Santanu Das