Publications

Google Scholar Profile Scopus Profile

A. Book/Book Chapter/Special issue

10. M Baruah and S Bag: Laser Microwelding of Titanium alloy, Application of Lasers in Manufacturing, Edited by U. S. Dixit, S. N. Joshi and J. Paulo Davim in Applications of Lasers in Manufacturing, Springer, 69-94, 2019.

9. U S Dixit and S Bag: Special Theme: Modelling of Manufacturing Processes, Journal of The Institution of Engineers (India): Series C, Springer, 98(1), 3 - 4, 2017.

8. S Jain, J Kalivarapu and S Bag: Development of self-consistent multi-objective harmony search algorithm, Edited by B.K. Panigrahi, P.N. Suganthan, S. Das in Swarm, Evolutionary, and Memetic Computing, LNCS 8947, Chapter 48, Springer, 2015.

7. D K Yaduwanshi, S Bag and S Pal: Hybrid Friction Stir Welding of Similar and Dissimilar Materials, Edited by R. G. Narayanan and U. S. Dixit in Advances in Material Forming and Joining, Springer, 323-349, 2015.

6. B Das, S Pal and S Bag: Monitoring of Weld Quality in Friction Stir Welding Based on Spindle Speed and Motor Current Signals, Edited by R. G. Narayanan and U. S. Dixit in Advances in Material Forming and Joining, Springer, 233-253, 2015.

5. A K Mondal, P Biswas, S Bag and M M Mohapatra: Prediction of Weld-Induced Angular Distortion of Single-Sided and Double-Sided Fillet Joints by SAW Process, Edited by R. G. Narayanan and U. S. Dixit in Advances in Material Forming and Joining, Springer, 203-220, 2015.

4. Y Nirsanametla, S Bag, C P Paul and L M Kukreja: Fiber Laser Welding in a Controlled Inert Gas Atmosphere: An Experimental and Numerical Investigation, Edited by S. N. Joshi and U. S. Dixit in Lasers Based Manufacturing, Springer, 399-419, 2015.

3. S Bag, D Yaduwanshi and S Pal: Heat transfer and material flow in friction stir welding process, Edited by Besharati-Givi & Asadi in Advances in Friction- Stir Welding and Processing, Woodhead Publishing, Chapter 2, 2014.

2. S. Bag and A. De: Computational models for GTA and laser welding processes, Lap-Lambert Academic Publishing Co. Ltd., Germany, ISBN 978-3-659-42994-1, 2013.

1. S Bag and A De: Computational modeling of conduction mode laser welding process, Edited by Xiaodong Na in Laser Welding: ISBN 978-953-307-129-9, Chapter 6: 133-160, 2010.

B. International Journal

46.T. Saikia, M. Baruah and S. Bag: On the effect of heat input in plasma microwelding of maraging steel, Proceedings of IMechE, Part B: Journal of Engineering Manufacture, in press.

45. B. Das, S. Pal and S. Bag: Monitoring of friction stir welding process using main spindle motor current, Journal of The Institution of Engineers (India): Series C, in press.

44. A K Mondal, A Lohit, P Biswas, S Bag and M Das: Prediction of weld-induced distortion of large structure using equivalent load technique, Proceedings of IMechE, Part B: Journal of Engineering Manufacture, 232(3), 499 - 512, 2018.

43. D Yaduwanshi, S Bag and S Pal: On the effect of tool offset in hybrid FSW of copper and aluminium alloy, Materials and Manufacturing Processes, 33(3), 277 - 287, 2018.

42. B. Kumar, D. Kebede and S. Bag: Microstructure evolution in thin sheet laser welding of titanium alloy, International Journal of Mechatronics and Manufacturing Systems, 11(2/3), 203-229, 2018.

41. M. Baruah, S. Bag and S Kumar: Probing phase lag effect in ultra-short pulse laser heating of nano-film, Manufacturing Letters, 13, 6 - 10, 2017.

40. A K Mondal, P Biswas, S Bag: Prediction of welding sequence induced thermal history and residual stresses and their effect on welding distortion, Welding in the World, 61(4), 711 - 721, 2017.

39. M. Baruah and S. Bag: Characteristic difference of thermo-mechanical behavior in plasma microwelding of steels, Welding in the World, 61(4), 857 - 871, 2017.

38. B. Das, S. Pal and S. Bag: Torque based defect detection and weld quality modelling in friction stir welding process, Journal of Manufacturing Processes, 27, 8 - 17, 2017.

37. B. Das, S. Pal and S. Bag: Design and development of force and torque measurement setup for real time monitoring of friction stir welding process, Measurement, 103, 186 - 198, 2017.

36. B. Das, S. Bag and S. Pal: Probing weld quality monitoring in frictionstir welding through characterization of signals by fractal theory, Journal of Mechanical Science and Technology, 31(5), 2459 - 2465, 2017.

35. M. Baruah and S. Bag: Influence of pulsation in thermo-mechanical analysis on laser microwelding of Ti6Al4V alloy, Optics & Laser Technology, 90, 40 - 51, 2017.

34. B. Das, S. Pal and S. Bag: Weld quality prediction in friction stir welding using wavelet analysis, International Journal of Advanced Manufacturing Technology, 89(1), 711 - 725, 2017.

33. A K Mondal, P Biswas and S Bag: Prediction and comparative study of submerged arc weld induced residual stress and angular deformation of single and double sided fillet welded joint using finite element analysis, International Journal of Steel Structures, 17(1), 9 - 18, 2017.

32. M. Baruah and S. Bag: Microstructural influence on mechanical properties in plasma microwelding of Ti6Al4V alloy, Journal of Materials Engineering and Performance, 25(11), 4718 - 4728, 2016. Link to view

31. B. Das, S. Pal and S. Bag: Defect detection if friction stir welding process using signal information and fractal theory, Procedia Engineering, 144, 172 - 178, 2016.

30. S. Kumar, S. Bag and M. Baruah: Finite element model for femtosecond laser pulse heating using dual phase lag effect, Journal of Laser Applications, 28(3), 032008:1 - 14, 2016.

29. B. Das, S. Pal and S. Bag: A combined Wavelet packet and Hilbert-Huang transform for defect detection and modelling of weld strength in friction stir welding process, Journal of Manufacturing Processes, 22, 260-268, 2016.

28. M. Baruah and S. Bag: Influence of heat input in microwelding of titanium alloy by micro plasma arc, Journal of Materials Processing Technology, 231, 100 - 112, 2016.

27. N Yadaiah, S Bag, C. P. Paul and L. M. Kukreja: Influence of self-protective atmosphere in fiber laser welding of austenitic stainless steel, International Journal of Advanced Manufacturing Technology, 86(1), 853 - 870, 2016. Link to view

26. D Yaduwanshi, S Bag and S Pal: Numerical modeling and experimental investigation on plasma-assisted hybrid friction stir welding of dissimilar materials, Materials & Design, 92, 166 - 183, 2016.

25. B Das, S Bag and S Pal: Defect detection in friction stir welding process through characterization of signals by fractal dimension, Manufacturing Letters, 7, 6-10, 2016.

24. B Das, S Pal and S Bag: Monitoring of friction stir welding process using weld image information, Science and Technology of Welding and Joining, 21(4), 317-324, 2016.

23. J Kalivarapu, S Jain and S Bag: An improved harmony search algorithm with dynamically varying bandwidth, Engineering Optimization, 48(7), 1091-1108, 2016.

22. A K Mondal, P Biswas, S Bag: Influence of tacking sequence on residual stress and distortion of single sided fillet submerged arc welded joint, Journal of Marine Science and Application 14 (3), 250-260, 2015.

21. D. Yaduwanshi, S. Bag and S. Pal: Heat transfer analyses in friction stir welding of aluminum alloy, Proceedings of IMechE, Part B: Journal of Engineering Manufacture, 229 (10), 1722-1733, 2015.

20. D. Yaduwanshi, S. Bag and S. Pal: Effect of preheating in hybrid friction stir welding of aluminum alloy, Journal of Materials Engineering and Performance, 23(10), 3794 - 3803, 2014. Link to view

19. N. Yadaiah and S. Bag: Development of egg-configuration heat source model in numerical simulation of autogeneous fusion welding processes, International Journal of Thermal Sciences, 86(12), 125 -138, 2014. ScienceDirect top 25 list of most downloaded articles (Rank 8th for July-September, 2014 and 19th for October-December, 2014)

18. S. Singh, N. Yadaiah, S. Bag and S. Pal: Numerical simulation of welding induced residual stress in fusion welding using adaptive volumetric heat source, Proceedings of IMechE, Part C: Journal of Mechanical Engineering Science, 228(16), 2960-2972, 2014.

17. R. S. Desai and S. Bag: Influence of displacement constraints in thermomechanical analysis of laser micro-spot welding process, Journal of Manufacturing Processes, 16(2), 264-275, 2014.

16. A. Ghosh, N. Barman, H. Chattopadhyay and S. Bag: Modelling of heat transfer in submerged arc welding process, Proceedings of IMechE, Part B: Journal of Engineering Manufacture, 227(10), 14767-1473, 2013.

15. N. Yadaiah and S. Bag: Role of oxygen as surface active element in linear GTA welding process, Journal of Materials Engineering and Performance, 22(11), 3199-3209, 2013. Link to view

14. M. Baruah and S. Bag: Numerical modelling of heat transfer and fluid flow in laser microwelding, International Journal of Mechatronics and Manufacturing Systems, 6(13), 310 - 334, 2013.

13. N. Yadaiah and S. Bag: Effect of heat source parameters in thermal and mechanical analysis of linear GTA welding process, ISIJ International, 52 (11), 2069-2075, 2012.

12. S. Bag, D. V. Kiran, Arshad A. Syed and A. De: Efficient estimation of volumetric heat source in fusion welding process simulation, Welding in the World, 56(11/12), 88 - 97, 2012.

11. R. E Logé, P Bernard, K Huang, S Bag and M Bernacki: Mean Field and Finite Element Modeling of Static and Dynamic Recrystallization, Materials Science Forum, 715 -716, 737, 2012.

10. P. Bernard, S. Bag, K. Huang and R. Logé: A two-site mean field model of discontinuous dynamic recrystallization, Materials Science and Engineering A, 528(24), 7357 - 7367, 2011.

9. S. Bag: A perspective review on laser assisted microjoining, Recent Patents on Mechanical Engineering, 4(2), 153 – 167, 2011.

8. S. Bag and A. De: Probing reliability of transport phenomena based heat transfer and fluid flow analysis in autogeneous fusion welding process, Metallurgical and Materials Transactions A, 41A(9), 2337 - 2347, 2010. Link to view

7. S. Bag and A. De: Error analysis of forward and reverse heat conduction and convection calculations considering uncertainties in welding, Science and Technology of Welding and Joining, 14(9), 662-668, 2009.

6. S. Bag, A. Trivedi and A. De: Development of a finite element based conduction mode heat transfer model for laser welding process using an adaptive volumetric heat source, International Journal of Thermal Science, 48(10), 1923-1931, 2009.

5. S. Bag, A. De and T. DebRoy: A genetic algorithm assisted inverse convective heat transfer model for tailoring weld geometry, Materials and Manufacturing Processes, 24(3), 384-397, 2009.

4. S. Bag and A. De: Development of an efficient numerical heat transfer model coupled with genetic algorithm based optimization for the prediction of process variables in GTA spot welding, Science and Technology of Welding and Joining, 14(4), 333-345, 2009.

3. S. Bag and A. De: Development of a three-dimensional heat transfer model for GTAW process using finite element method coupled with a genetic algorithm based identification of uncertain input parameters, Metallurgical and Materials Transactions A, 39A(11), 2698-2710, 2008. Link to view

2. S. Bag, A. Trivedi and A. De: Use of multivariate optimization algorithm to develop self-consistent numerical heat transfer model for laser spot welding, International Journal of Advanced Manufacturing Technology, 38, 575-585, 2008. Link to view

1. A. Trivedi, S. Bag and A. De: Three dimensional transient heat conduction and thermomechanical analysis for laser spot welding using adaptive heat source, Science and Technology of Welding and Joining, 12(1), 24 - 31, 2007.

C. National Journal

3. S. Bag: Recent advances in laser microwelding, KIRAN: A Bulletin of Indian Laser Association, 24(2), 23 – 31, 2013.

2. S. Bag: Adverse effect of surface active element transport in conduction mode laser welding process, KIRAN: A Bulletin of Indian Laser Association, 23(2), 6-10, 2012.

1. S. Bag and A. De: Three dimensional heat transfer modeling of laser beam welding using adaptive volumetric heat source and GA based optimization of absorption coefficient, Indian Welding Journal, 42(2), 43-48, 2009.

D. International Conference

37. B. Kumar, M. Baruah and S. Bag: On the effect of heat input in cooling rate and microstructure of laser welded Ti-6Al-4V alloy, Advances in Materials & Processing Technologies, 11th - 14th December, 2017, Chennai, India.

36. S. Bag, D. K. Yaduwanshi and S. Pal: Role of physical variables in dynamic recrystallization during friction stir welding of aluminium alloy, Advances in Materials & Processing Technologies, 11th - 14th December, 2017, Chennai, India.

35. A. Sahu and S. Bag: Micro-plasma Arc welding of Inconel718 thin Sheets, 5th International Congress of the International Institute of Welding, 7th - 9th December, 2017, Chennai, India.

34. S. Bag: Feasibility of dissimilar microwelding using femtosecond pulse laser, 5th International Congress of the International Institute of Welding, 7th - 9th December, 2017, Chennai, India.

33. B. Das, S. Pal and S. Bag: Weld defect identification in friction stir welding using power spectral density, International Conference on Recent Advances in Materials & Manufacturing Technologies (IMMT 2017), 28th - 29th November, 2017, Dubai.

32. S. Bag: Microscale heat transfer in fusion welding of glass by ultra-short pulse laser using dual phase lag effects, International Conference on Recent Advances in Materials & Manufacturing Technologies (IMMT 2017), 28th - 29th November, 2017, Dubai. (IOP Conference Series

31. S. Bag and M. R. Amin: Simulation based study on ultra-short pulse laser welding of dissimilar materials expending phase lag influence, IMECE 17, November 3 - 9, 2017, Tampa, Florida, USA.

30. B. Das, S. Pal and S. Bag: Wavelet transform based defect identification in friction stir welding process, AIMTDR 2016, 16th - 18th December, 2016, Pune.

29. M. Baruah and S. Bag: Analysis of temperature of microplasma arc welding of 0.5 mm Ti6Al4V sheets, 1rst International Conference on Materials, Manufacturing and Design Engineering (iCMMD 2016), 20 – 21th December, 2016, Vidyavihar, Raigad, Maharashtra, India.

28. M. Baruah and S. Bag: Effect of peak power on joint characteristics of pulse laser welding of 0.5 mm Ti6Al4V sheets, AIMTDR 2016, 16th - 18th December, 2016, Pune.

27. B. Das, S. Pal and S. Bag: Machine vision system based monitoring approach for friction stir welding process, IEEE first international Conference on Control, Measurement and Instrumentation (CMI 2016), 8 - 10th January, 2016, Jadavpur University, Kolkata. (DOI:10.1109/CIM.2016.7413715)

26. B. Das, S. Pal and S. Bag: Defect detection in friction stir welding process using signal information and fractal theory, 12th International Conference on Vibration Problems (ICOVP 2015), 14 - 17 th December, 2015, IIT Guwahati, Assam.

25. B. Das, S. Pal and S. Bag: Neurofractal modeling of weld quality in friction stir welding, International Conference on Cutting, Welding and Surfacing (CWS 2015), 5 -7th August, 2015, Coimbatore. (Best technical paper award)

24. M. Baruah and S. Bag: Analysis of plasma micro welded Ti‑6Al‑4V sheets, International Conference on Laser and Plasma Applications in Materials Science (LAPAMS 2015), 15 – 17th January, 2015, Kolkata.

23. J. Kalivarapu, S. Jain and S. Bag: Development of self-consistent multi objective harmony search algorithm, The 5th International Conference on Swarm, Evolutionary and Memetic Computing

(SEMCCO 2014), 18-20th December, 2014, Bhubaneswar, Odisha. (LNCS 8947, Chapter 48)

22. M. Baruah and S. Bag: Experimental and Numerical Investigation of Micro Plasma Welded Ti‑6Al‑4V sheets, International Symposium on Aspects of Mechanical Engineering & Technology for Industry (AMETI 2014), 6 – 8th December, 2014, NERIST, Arunachal Pradesh.

21. N. Yadaiah, S. Bag, C. P. Paul and L. M. Kukreja: An experimental investigation on fiber laser welding at controlled inert gas atmosphere, 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR), 12th – 14th December, 2014, IIT Guwahati.

20. A. K. Mondal, P. Biswas, S. Bag and Manas M Mohapatra: Prediction of weld induced angular distortion of single sided and double sided fillet joint by saw process, 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR), 12th – 14th December, 2014, IIT Guwahati.

19. D. Yaduwanshi, S. Pal and S. Bag: Effect of Preheating on Mechanical Properties of Hybrid Friction Stir Welded Dissimilar Joint, 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR), 12th – 14th December, 2014, IIT Guwahati.

18. B. Das, S. Pal and S. Bag: Monitoring of friction stir welding process through signals acquired during the welding, 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR), 12th – 14th December, 2014, IIT Guwahati.

17. S. Bag: Optimization of penetration depth by pulse shaping in laser microwelding of stainless steel, Advancements in Welding, Cutting & Surfacing Technologies for Improved Economy, Reliability & Sustainable Environment, IIW International Congress 2014, 9th - 11th April, 2014, New Delhi.

16. D. Yaduwanshi, S. Pal and S. Bag: Dissimilar hybrid friction stir welding of pure copper and AA1100, Advancements in Welding, Cutting & Surfacing Technologies for Improved Economy, Reliability & Sustainable Environment, IIW International Congress 2014, 9th - 11th April, 2014, New Delhi.

15. M. Baruah and S. Bag: Investigation on micro plasma welding of titanium alloy, Advancements in Welding, Cutting & Surfacing Technologies for Improved Economy, Reliability & Sustainable Environment, IIW International Congress 2014, 9th - 11th April, 2014, New Delhi.

14. A. Mondal, P. Biswas and S. Bag: Effect of process parameters on microstructure and mechanical properties of single pass single-sided square butt joint by submerged arc welding, Advancements in Welding, Cutting & Surfacing Technologies for Improved Economy, Reliability & Sustainable Environment, IIW International Congress 2014, 9th - 11th April, 2014, New Delhi.

13. N. Yadaiah, S. Bag, C. P. Paul and L. M. Kukreja: Efficient Finite Element Modeling of Fiber Laser Welding Process under Conduction Regime on 316 Stainless Steel Plate, International Conference on Advances in Mechanical Sciences (ICAMS2014), 9th -11th January, 2014, Vardhaman College of Engineering, Hyderabad. (awarded one of the best papers)

12. S. Bag and P K. Sahu: Influence of pulse shaping in thermal analysis of ultra-shot pulse laser welding using non-Fourier heat conduction, 22nd National and 11th International ISHMT-ASME Heat and Mass Transfer Conference, 28th – 31st December, 2013, IIT Kharagpur, India.

11. N. Yadaiah, S. Bag, C. P. Paul and L. M. Kukreja: Fiber laser welding of austenitic stainless steel in protective atmosphere of argon, Recent Development in Welding and Joining Technologies, 7th Asia Pacific IIW International Congress, 8th - 10th July, 2013, Singapore.

10. D. Yaduwanshi, S. Bag and S. Pal: Thermal analysis on plasma assisted friction stir welding of aluminum alloy, Recent Development in Welding and Joining Technologies, 7th Asia Pacific IIW International Congress, 8th – 10th July, 2013, Singapore.

9. A. Mondal, P. Biswas and S. Bag: Effect of process parameters on residual stress distribution of submerge arc welded butt joint, Recent Development in Welding and Joining Technologies, 7th Asia Pacific IIW International Congress, 8th – 10th July, 2013, Singapore.

8. A. Mondal, R. Ranjan, P. Biswas and S. Bag: Finite element analysis of weld induced residual stress of double sided fillet welded joint’, Processing and Fabrication of Advanced Materials XXI, 10th – 13th December, 2012, Guwahati, India.

7. S. Bag, D. V. Kiran and A. De: Efficient estimation of volumetric heat source in fusion welding process simulation, 64th IIW Annual Assembly (Commission IX), 17th – 21st July, 2011, Chennai, India.

6. S. Bag and N. Yadaiah : Possible role of surface active elements in weld pool modelling of fusion welding process, International Conference on Computational Methods in Manufacturing (ICCMM 2011), 15th -16th December, 2011, IIT Guwahati, India.

5. R.E. Loge, S. Bag, K. Huang and M. Bernacki: Modelling dynamic and static recrystallization using mean field and finite element methods, Thermec 2011; 01/2011.

4. R.E. Loge, H. Resk, S. Bag, K. Huang and M. Bernacki: Modelling deformation and recrystallization in metals using digital microstructures and mean field methods, KomPlasTech 2011; 01/2011.

3. S. Bag and A. De: Three dimensional heat transfer modeling of laser beam welding using adaptive volumetric heat source and GA based optimization of absorption coefficient, International Conference on Welding (IIW IC - 2008), Organized by Indian Institute of Welding (IIW) in association with International Institute of Welding, 8th - 10th January, 2008, Chennai, India. (Awarded H D Govindraj Memorial Research Award for best research paper)

2. S. Bag, A. Trivedi and A. De: Reliable estimation of laser weld pool using numerical modeling and multivariate optimization, 1st International and 22nd All India Manufacturing Technology Design and Research Conference, 21st - 23rd December, 2006, IIT Roorkee, India.

1. A. Trivedi, S. Bag and A. De: Three dimensional transient heat conduction and thermomechanical analysis for laser spot welding using adaptive heat source, Computer Aided Welding Engineering - 2006, 19th - 21st October, 2006, Shandong University, Jinan, P. R. China.

E. National Conference

8. M. Baruah and S. Bag: Influence of gap conductance in thermal analysis of laser transmission welding, Recent Trend in Mechanical Engineering, 21st – 22nd October, 2016, Institute of Engineers (India, Assam State Centre), Guwahati.

7. R. Majumdera, M. Baruah and S. Bag: Influence of plasma gas flow rate on weld-induced distortions in plasma microwelding of low carbon steel, 30th National Coference of Production Engineers, Agartala, Tripura July 18-19, 2015.

6. D. Yaduwanshi, S. Pal and S. Bag: Theoritical and experimental development of plasma assisted friction stir welding, National Conference on Manufacturing: Vision for Future (MVF 2013), IIT Guwahati, Assam, 12th - 13th October, 2013.

5. M. Baruah and S. Bag: A perspective on thermal analysis of laser transmission welding, National Conference on Manufacturing: Vision for Future (MVF 2013), IIT Guwahati, Assam, 12th - 13th October, 2013.

4. P. K. Sahu and S. Bag: Finite element modeling of ultra-shot pulsed laser welding using non-Fourier heat conduction, National Conference on Advances in Welding Technology, NERIST, Itanagar, Arunachal Pradesh, 10th - 11th May, 2013.

3. R. S. Desai and S. Bag: Numerical modeling and simulation of micro-laser spot welding, National Conference on Advances in Welding Technology, NERIST, Itanagar, Arunachal Pradesh, 10th - 11th May, 2013.

2. S. Bag and A. De: Development of a transport phenomena based numerical model for GTAW process using FEM, National Welding Seminar (NWS-2009), Organized by The Indian Institute of Welding, Mumbai, 4th - 6th February, 2009.

1. A. De, S. Bag and A. Trivedi: Enhancing reliability of numerical computational model for laser spot welding process, National Conference on Welding Productivity and Quality (WPQ-2007), NMRL Ambernath, India, 20th – 21st February, 2007.