Goal

My research goal is to elucidate the multi-scale deformation related phenomena in inelastically deforming materials using an effort combining theoretical and empirical components. A robust understanding of such phenomena can accelerate material discovery and component design.

Modeling

Multiscale modeling coupling multiple deformation modes in metals

Computer modeling icon

Deformation response of metals can be complex due to the presence of multiple deformation modes - slip, phase transformation, twinning and other aspects like interaction between the grains, anisotropic mechanical properties and complex loading paths. Microstructural modeling can elucidate the fundamental phenomena defining deformation patterns. Macro scale modeling can provide fast and robust tools to aid in component design process while accounting for the complex deformation mechanisms.

Experiments

X-ray diffraction-based techniques to quantify microstructure and deformation

Diffraction experimen icon

Synchrotron X-ray diffraction based techniques can quantify deformation and structure of metals at multiple length scales. E.g. μXRD can reveal intragranular orientation spread and strains, HEDM can provide grain-scale statistics of orientation and lattice strains and powder diffraction can provide component-scale texture and strains. These techniques together are ideal to inform and validate multi-scale numerical models.

Publications

  1. Paranjape H., Paul P., Amin-Ahmadi B., Sharma H., Dale D., Ko J. Y. P., Chumlyakov Y., Brinson L. C., Stebner A. (2018). In situ, 3D characterization of the deformation mechanics of a superelastic NiTi shape memory alloy single crystal under multiscale constraint, Acta Materialia.
  2. Paul P., Paranjape H., Amin-Ahmadi B., Stebner A., Dunand D., Brinson L. C. (2017). Effect of Machined Feature Size Relative to the Microstructural Size on the Superelastic Performance in Polycrystalline NiTi Shape Memory Alloys, Materials Science and Engineering: A.
  3. Paranjape H., Bowers M. L., Mills M. J., Anderson P. M. (2017). Mechanisms for phase transformation induced slip in shape memory alloy micro-crystals, Acta Materialia.
  4. Paranjape H., Paul P., Sharma H., Kenesei P., Park J-S., Duerig T., Brinson L. C., Stebner A. P. (2017). Influences of Granular Constraints and Surface Effects on the Heterogeneity of Elastic, Superelastic, and Plastic Responses of Polycrystalline Shape Memory Alloys, Journal of the Mechanics and Physics of Solids.
  5. Paranjape H., Manchiraju S., Anderson P. M. (2016). A Phase Field/Finite Element Approach to Model Coupled Phase Transformation and Plasticity in Shape Memory Alloys, International Journal of Plasticity.
  6. Stebner A. P., Paranjape H., Clausen B., Brinson L. C., & Pelton A. R. (2015). In Situ Neutron Diffraction Studies of Large Monotonic Deformations of Superelastic Nitinol, Shape Memory and Superelasticity.
  7. Paranjape H., Anderson P. M. (2014). Texture and Grain Neighborhood Effects on Ni-Ti Shape Memory Alloy Performance, Modeling and Simulation in Materials Science and Engineering.
  8. Ebersole G. C., Paranjape H., Anderson P. M., & Powell H. M. (2012). Influence of hydration on fiber geometry in electrospun scaffolds. Acta Biomaterialia.
  9. Raveendra S., Kanjarla A., Paranjape H., Mishra S., Delannay L., Samajdar I., & Van Houtte P. (2011). Strain Mode Dependence of Deformation Texture Developments: Microstructural Origin. Metallurgical and Materials Transactions A.
  10. Raveendra S., Paranjape H., Mishra S., Weiland H., Doherty R. D., & Samajdar I. (2009). Relative Stability of Deformed Cube in Warm and Hot Deformed AA6022: Possible Role of Strain-Induced Boundary Migration. Metallurgical and Materials Transactions A.

Teaching

Colorado School of Mines

  1. Spring 2016 | Inelastic Constitutive Relations: Special topics graduate course on the mechanics of inelastic deformation in materials. Combines model development, numerical implementation and experimental verification aspects.
  2. Fall 2015, 2016 | Solid Mechanics: Co-instructor. Graduate core course in Mechanical Engineering.