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Associate Professor

Nagamani Jaya Balila

Email: jayabalila[at]iitb[dot]ac[dot]in

Phone: (+91) (022) 2576 7626

Education: 

  • Ph.D. ­ Materials Engineering, IISc Bangalore, 2013 
  • B.Tech ­ Met. & Matls. Engg., NlT Karnataka, 2007
Teaching

Prof. Jaya inculcates hands­on projects and laboratory components even in theoretical courses, to enhance both conceptual understanding and application of the concepts taught. She has been utilizing the maker space and her own mechanical test facility as resources. 

Courses taught are: Mechanical Behavior of Materials, Fracture Mechanics and Failure Analysis, Mechanics of Materials, Micromechanics of Thin Films and Small Structures, Metallography and Structural Characterization Laboratory.

Research profile

Prof Jaya's research interests are in mechanical behavior and structural integrity assessment of different classes of materials, across different length scales. Her focus is to deploy finite element modeling in combination with experiments to develop: Non­conventional fracture test geometries [1]; Design and development of damage resistant structures [2­3]; Microstructure and micro­mechanical characterization of interface dominated materials across stress states [4­6]. Her group is the first in the country to set up in­situ micromechanics techniques with full field strain mapping using digital image correlation under optical and electron microscopes [4­5]. She is funded by Pratt & Whitney, for her work on thermal spray coatings and additively manufactured superalloys, by IGCAR for solidification cracking in laser welded steels, and has been part of collaborations with TATA Steel to develop a miniature hole expansion ratio set up (patent filed) [6]. She has been the recipient of the Max Planck Society's External Partner­ Group Leadership Award, KITs International Excellence Fellowship Award, and Visiting Fellowship Awards at Hiroshima University and Xian­Jiatong University, for her collaborative work.

Research interest
  • Fracture mechanics of thin films, coatings and multilayered structures 
  • Design of damage tolerant composites and alloys through additive manufacturing 
  • In­situ micro­ and nano­mechanical characterization of alloys

Micromechanical testing techniques for small volumes

In­situ SEM­DIC strain mapping of DP steels

Fracture resistance optimization of multilayered Ti/ TiN films

References
  1. B. Nagamani Jaya, “Fracture in small­scale structures and confined volumes” MRS Bulletin, 47, 2022, 832­838 
  2. A. K. Mishra, H. Gopalan, M. Hans, C. Kirchlechner, J. Schneider, G. Dehm, B. Nagamani Jaya, “Strategies for damage tolerance enhancement in metal/ceramic thin films: Lessons learned from simulations and the system Ti/TiN”, Acta Materialia, Vol 228, 2022, 117777. 
  3. D. Yadav, B. Nagamani Jaya, Size effects governing damage resistance of architected PMMA, Engineering Fracture Mechanics, 2023, Vol. 290, 109526 
  4. S. Basu, B. Nagamani Jaya, H. Seekala, P. S. Phani, A. Patra, S. Ganguly, M. Dutta, I. Samajdar, Correlative Characterization and Plasticity Modeling of Microscopic Strain Localizations in a Dual Phase Steel, Materials Characterization, 2023, 197, 112704 
  5. N. G. Mathews, A. K. Saxena, N. Venkataramani, G. Dehm, B. Nagamani Jaya, “Multiscale characterization of damage tolerance in Barium Titanate thin films”, Journal of Applied Physics, Vol 132, Issue 4, 2022, 045302 
  6. S. Basu, B. Nagamani Jaya, S. Ganguly, M. Dutta, I. Samajdar, Novel miniature in­situ hole expansion test coupled with microscopic digital image correlation, Review of Scientific Instruments, 2023, (accepted)