Teaching
The PI (Dr. Debashish Das) is currently teaching two core courses (ME 228 & ME 242) and three electives (ME 262, ME 292, & ME 217) in the Mechanical Engineering Department. He also taught industrial participants in a PG level advanced certification course in Mobility Engineering. More details below about the courses that the PI is currently engaged in, can be found below.
ME 242 (AUG) 3:0 Solid Mechanics
Semester: August
Offered: 2023
Course Description: Analysis of stress and strain, stress-strain relations, two-dimensional elasticity problems, Airy stress functions in rectangular and polar coordinates, axisymmetric problems, energy methods, St. Venant's Principle, bending and torsion, elastic wave propagation, elastic instability and thermal stresses.
ME 292 (JAN) 3:0 Contact and Impact Mechanics
Semester: January
Offered: 2023
Course Description: Brief overview of elasticity and linear-elastic fracture mechanics; point and line loading of an elastic half-space; frictionless contact mechanics of rigid and deformable bodies; force interactions between atoms and molecules (bonded and non-bonded short and long-range interactions); forces between particles and surfaces; capillary forces; adhesive contact mechanics; friction; application of contact mechanics in instrumented nanoindentation and atomic force microscopy; introduction to 1-D impact mechanics of elastic bodies; dynamic testing techniques; strain rate dependence of materials; latest research on contact and impact mechanics.
ME 228 (JAN, AUG) 3:0 Materials and Structure Property Correlations
Semester: January, August
Offered: 2022, 2024
Course Description: Atomic structure of materials, atomic bonding, crystal structure; point, line and area defects in crystal structure; solidification of metals; phase diagrams; dislocation concepts of plastic deformation; critical resolved shear stress and yielding; interactions between dislocations and work hardening; recovery, recrystallization and grain growth; fracture-microscopic descriptions; mechanisms of metal deformation; processing maps.
ME 262 (JAN/AUG) 3:0 Wave Propagation in Solids
Semester: TBA
Offered: TBA
Course Description: Uniaxial stress waves (equation of motion, x-t diagrams, reflection at boundaries, impedance mismatch); Uniaxial strain waves (method of characteristics); Bulk waves in 2D and 3D media (longitudinal & shear waves, Rayleigh and Stoneley waves, plane waves in 2D, reflection and refraction); Wave guides (dispersion, phase & group velocities, vibrating beams, Love waves, plate problems, 3D bar problems); Spherical waves (Impact of half spaces, Boussinesq & Lamb problems, unloading waves); Shock waves (1D shock waves, Rankine-Hugoniot relations, equation of state); Dynamic testing techniques (Split Hopkinson bars, plate impact, Taylor test, expanding ring).
ME 217 (JAN) 2:1 Experimental Methods in Mechanical Engineering
Semester: January
Offered: 2024
Course Description: This course is designed to introduce post-graduate students to basic experimental methods in mechanical engineering. The course is divided into 3 modules – the first module is comprised of elementary topics pertaining to design and execution of experiments, data analysis and signal processing, uncertainty quantification, and interfacing of measurement/actuation instruments. The second module consists of experiments and accompanying lectures, covering five different areas – basic manufacturing practice, control systems, fluid mechanics, solid mechanics and heat transfer. In the third module, students will work in groups on a project that combines concepts from the first two modules.
Mobility Engineering Module 3: Vehicle Structural Analysis & Design
Semester: June-July
Offered: 2023
Course Description: Revisiting the strength of materials; Strain, stress, constitutive relations, and boundary value problems; Plasticity, fracture and fatigue; Vibrations, impact and acoustics; Material selection; Vehicle design for bending, torsion, and crashworthiness.