Department of Mechanical Engineering
DMM Laboratory • IIT Palakkad/Mechanics of Materials & Digital Twins

Synergistic Mechanics of Materials & Digital Twins for Advanced Manufacturing

Predicting the structural integrity of metallic components by coupling experimental and computational mechanics to develop physics-informed digital twins and material passports for manufacturing and extreme in-service environments.

10+Active Thrusts
DIGITALTWINS / THREADS
MATERIALPASSPORTS / FINGERPRINTS
DMM Group Overview - Multi-scale constitutive modelling and digital thread architecture
Lab FoundationMulti-Scale Digital Thread

Multi-scale constitutive modelling and digital thread linking raw material micro-physics to macroscopic thermo-mechanical finished components.

News & Updates
Oct 2026: Achal H P joins DMM as PhD Scholar • Experimental characterization & crystal plasticity modelling.
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Investigation Portfolios

Active Research Thrusts

Synergizing continuum thermo-mechanics, high-strain-rate experiments, and high-fidelity microstructural crystal plasticity models.

Thrust 01FEM • Constitutive

Digital Twins of Manufacturing Processes

Development of high-fidelity numerical representations for extreme hot-deformation processes including hammer forging and multi-pass ring rolling. Captures dynamic recrystallization kinetics, localized friction heating, and real-time thermo-mechanical load response.

Hammer Forging Digital Twin finite element temperature and strain evolution
Key Project: Hammer Forging Digital TwinDEFORM / ABAQUS
Thrust 02CPFE • EBSD • DIC

Micromechanics & Crystal Plasticity

Serial sectioning, 3D grain reconstruction, and non-local crystal plasticity finite element (CPFE) frameworks. Investigating twin nucleation criteria, stored energy density gradients, and crystallographic misorientation thresholds in hexagonal close-packed (HCP) alloys.

Magnesium AZ31 Twin Nucleation Crystal Plasticity Graphical AbstractTwin nucleation 3D microstructures serial sectioning
Systems: Magnesium AZ31, Ti-6Al-4VImperial • Sheffield
Thrust 03Nye Tensor • Microstructural Damage

Multi-scale Damage & Geometrically Necessary Dislocations

Resolving dislocation density evolution at microstructural discontinuities. Using high-resolution electron backscatter diffraction (HR-EBSD) coupled with digital image correlation (DIC) to evaluate Nye dislocation tensor tensors and formulate slip-system-specific damage indicators.

GND damage indicator graphical abstract showcasing Nye tensor and slip system strains
Framework: Microstructural Strain HotspotsHR-EBSD / Nye
Thrust 04Grain Growth • Phase Field

Constitutive Modelling & Microstructural Grain Growth

Formulation of internal state variable models for hot deformation, dynamic recovery, and static/meta-dynamic recrystallization. Experimental heat-treatment protocols resolving prior austenite grain boundaries, texture evolution, and crystallographic pole figures.

Hot deformation constitutive model graph and grain structureAustenite grain heat treatment and pole figures
Alloys: Steels, Nickel SuperalloysMatCalc / Thermo-Calc
Laboratory Plates

Graphical Abstracts & Case Studies

Editorial archive of computational models, grain-scale EBSD maps, and digital twin representations developed by group members and collaborators.

Hammer Forging Digital Twin Graphical Abstract
PROCESS TWIN

Hammer Forging Digital Twin

Finite element prediction of transient thermal gradients and accumulated effective strain profiles during heavy hammer forging operations.

Simulation DomainExplicit Dynamic
Forging strain map and microstructural flow lines Graphical Abstract
METAL FORMING

Forging Strain Map & Microstructural Flow

Experimental flow-line analysis and macro-etched cross-sections mapping grain flow lines against continuum shear strain distribution.

Material ScaleMeso / Macro
Twin nucleation 3D microstructure serial sectioning reconstruction
CRYSTAL PLASTICITY

Twin Nucleation 3D Microstructure

FIB-SEM serial sectioning and full 3D polycrystal reconstruction investigating the stress state at grain boundaries triggering extension twin variants.

Technique3D-EBSD / CPFE
Hot deformation constitutive model graph by S Krishna Narayan
CONSTITUTIVE

Hot Deformation Constitutive Model

Internal state variable formulations capturing work hardening and dynamic recrystallization (DRX) softens across temperature and strain-rate domains.

Lead ScholarS. Krishna Narayan
Austenite grain heat treatment and pole figures by Ebin Shibu James
METALLURGY

Austenite Grain Heat Treatment

Reconstruction of parent austenite grains from room-temperature martensite/bainite crystallographic orientations and inverse pole figure maps.

Lead ScholarEbin Shibu James
GND-Mediated Damage Indicator at Individual Slip Systems
DAMAGE MECHANICS

GND-Mediated Damage Indicator

Resolving dislocation-dense boundary interfaces and crystallographic shear localization predicting microcrack onset before macroscopic fracture.

TechniqueHR-DIC / CPFE
Group Directory

Principal Investigator & Members

Dr. Chaitanya Paramatmuni, Principal Investigator
verifiedJoined: December 2024
mailc[dot]paramatmuni[at]iitpkd[dot]ac[dot]in
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Dr. Chaitanya Paramatmuni

Assistant Professor, Department of Mechanical Engineering
Principal Investigator

Dr. Chaitanya Paramatmuni, a mechanical engineer trained in mechanics of materials and digital twins for manufacturing, is an Assistant Professor at the Department of Mechanical Engineering. Before moving to this academic role, he was a postdoctoral research associate within the SAFER program at The University of Sheffield, United Kingdom. He pursued doctoral studies on 'Micromechanics of twin nucleation and growth in magnesium alloys' at Imperial College London, UK and M.S. (by research) at IIT Madras, India. His doctoral studies were supported by the President's PhD Scholarship, which is the most prestigious and generous scholarship awarded to exceptional talent at Imperial College London.

Under the umbrella of the mechanics of materials, his research interest broadly has been a synergistic experimental-numerical approach to understand mechanical behaviour and structural integrity of materials during manufacturing and in-service. He is recognized as an Associate Fellow of Higher Education Academy (AFHEA) for his teaching skills that comply with UK professional framework standards. He enjoys trekking, food and music.

Current Members

S Krishna Narayan, Research Scholar

S Krishna Narayan

Research Scholar

Joined: August 2025

Mr. S. Krishna Narayan is a research scholar specializing in metallurgy and materials science. His interests span material processing, characterization, and experimental investigations of engineering materials, with a growing interest in computational methods for materials research. He is passionate about lifelong learning and finds great satisfaction in teaching and mentoring others.

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Sreekesari Vangeepuram, MS Research Scholar

Sreekesari Vangeepuram

MS Research Scholar

Joined: August 2025

Sreekesari Vangeepuram is a problem solver at heart, drawn since childhood to scientific and technopreneurial challenges. He holds a Bachelor's degree in Mechatronics Engineering, where he studied the design, integration, and optimization of complex engineering systems. That foundation led him naturally into research and development of technologies that address difficult problems.

He is currently pursuing his Master's thesis under the supervision of Dr. Chaitanya Paramatmuni, developing a novel instrumentation technique for the microstructural characterization of metals. The work aims to strengthen quality management in the upstream processing of safety-critical components for aerospace and other demanding industries. It spans metallography, instrumentation, micro- and nanoscale systems, machining mechanics, and digital twins and threads.

Beyond the lab, Sreekesari is a polyglot programmer, sportsperson, and avid reader, with a deep admiration for both the arts and the sciences.

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Arman Shekhar, Research Scholar

Arman Shekhar

Research Scholar

Joined: April 2026

Mr. Arman Shekhar is a Research Scholar specializing in metallurgy and materials science. His research looks at how specimen dimensions affect grain growth in 316L stainless steel, using a combination of heat treatment experiments, microstructural characterisation and computational modelling. His work is a combination of experimental studies with finite element simulations and Arrhenius-based grain growth modelling to predict microstructural evolution. He is committed to continuous learning and research excellence.

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Ebin Shibu James, Master of Technology student (M.Tech, Manufacturing & Materials Engineering)

Ebin Shibu James

Master of Technology student (M.Tech, Manufacturing & Materials Engineering)

Joined: June 2026

Ebin Shibu James part of manufacturing and materials engineering postgraduate program is currently exploring mechanical response of metallurgical materials using insitu methods. For his master's thesis, he leverages Digital Image Correlation (DIC) to investigate the complexities of metal plasticity.

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Achal H P, Ph.D research scholar

Achal H P

Ph.D research scholar

Joined: October 2026

Achal is passionate about research. He holds B.E from NIE Mysore and MTech from IIT Dharwad. His master's thesis was about modelling plasticity due to deformation twins in HCP metals. He is currently pursuing his Ph.D thesis under the supervision of Dr. Chaitanya Paramatmuni.

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Academic Curriculum

Teaching & Course Instruction

AFHEA CertifiedIIT Palakkad Mechanical Engineering
Course CodeCourse TitleTarget CohortType / RoleStatus
ME5007Advanced Engineering MaterialsPostgraduate (M.Tech / PhD)Core Theory / Primary InstructorActive Semester
ME1150Mechanical WorkshopUndergraduate (B.Tech 1st Year)Practical Hands-on LabRegular
ME5110M.Tech Project (Continuous Evaluation)M.Tech Manufacturing / DesignThesis Research SupervisionOngoing
ME5004Mechanical Behaviour of MaterialsPostgraduate / Final Year B.TechAdvanced Mechanics ElectiveCurriculum
ME3112Manufacturing and Materials Engineering LabUndergraduate (B.Tech 3rd Year)Experimental Mechanics & TestingCurriculum
Scholarly Output

Selected Publications

Full list on Google Scholar open_in_new
Prospective Researchers & Fellows

Join the Digital Materials & Manufacturing Laboratory

Prospective researchers interested in PhD, MS (Research), and Postdoctoral fellowships in Mechanics of Materials & Digital Twins are encouraged to review our active research themes and contact the PI directly with an academic CV, statement of purpose, and sample publications.

Ph.D ScholarsGATE / CSIR-NET / Institute Fellowships open bi-annually.
MS by ResearchFocusing on numerical CPFE and deformation experiments.
PostdoctoralNational PDF, Institute PDF, and industry-sponsored grants.

Direct Application Inquiries

Formal institute admission rounds occur in Autumn (July) and Spring (December). Candidates eligible for external funding may apply year-round.

c[dot]paramatmuni[at]iitpkd[dot]ac[dot]in
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Institutional Location

Contact & Sahyadri Campus

The Digital Materials & Manufacturing (DMM) Group is based at the Sahyadri Campus of IIT Palakkad, situated at the foothills of the Western Ghats along the Palakkad Gap corridor.

location_on
Office D03, Department of Mechanical EngineeringSahyadri Campus, Kanjikode, Indian Institute of Technology Palakkad
Palakkad 678623, Kerala, India
call
Telephone Office+91 491 209 1475
mail
Electronic Mail (PI)c[dot]paramatmuni[at]iitpkd[dot]ac[dot]in
Nearest Transit: Palakkad Junction (PGT) • 15 kmCoimbatore Airport (CJB) • 55 km