Natural and Bio-Systems Health Monitoring and Diagnostics
Two particular aspects under this broad field are covered in our present research effort. One is the study and evaluation of biomaterials and supporting biology in synthetic environment using in vitro set-up and lab-on-chip instrumentation, sensors, imaging systems etc. Effect of various control, environmental factors etc. are analyzed. Modeling and simulation effort is directed toward enabling phenomenological understanding and correlating sensing signals to various process parameters. An important objective here is to understand how sensory functions can be assembled in natural/biological processes and how predictive and mechanistic models can be combined to evaluate various quantities of interests.
the …
Aerospace Systems Health Monitoring and Diagnostics
Aerospace Systems Health Monitoring and Diagnostics
Structural Health Monitoring (SHM) is an emerging function/objectives in designing tomorrow’s aerospace structures and other dependent sub-systems. Non-destructive evaluation based inspection of structures are indispensible method of monitoring structural health which forms the foundation of aerospace transportation safety and vehicular operations today. Based on this process, SHM is likely to bring significant shift in the ways structures and systems are designed. SHM in design is an integrated perspective and emerging areas of research. Autonomous monitoring and intervention remain futuristic concepts at present. Our research effort covers some of the associated problem areas as …
Signal and Data Science
Following are the topical problems of interest under the broad category of multiscale modeling and simulation arising from spatial-temporal signal processing, imaging and the associated problem of data representation, data compression and model-order reduction. Most of these methods are actually quite well established methods used for material structure-property correlation. However, the problem of micro/nano-material structure-property correlation calls for greater insight to the signal characteristics and measured data. Similarly, in composite materials with inhomogeneous phases, material structure-property correlation requires identification and separation of certain signals and measured data sets. Several of these problems lead to non-linear and discrete optimization problems. …
Multiscale Modeling & Simulation
Finite Element MethodEnriched field interpolation schemes in finite element in general and its application in spectral finite element method for modeling high frequency elastic wave propagation development of eXtended finite element scheme in time and frequency domains with higher-order spatial field interpolations are being developed. Modeling high frequency elastic wave propagation in complex geometries with discontinuities like cracks, phase change, fluid-solid interface and nonlinear dynamic response of materials have remained challenging problems. Partial wave field enrichment method is one by which frequency or time domain spectral finite element schemes can be employed to complex geometries in a mesh-less or …
Bio-Materials and Therapeutics in Bio-Systems and Space Applications
Understanding the structural and functional behavior of biological materials is key to designing better bio-compatible systems such as implant, implantable sensors, therapeutic methods and wearable devices for various enabling functions. Understanding of how biological materials evolve and self-organize is also important in engineering better materials. Behavior of biological materials in space environmental is also an important subject of interest here. We use various computational techniques and tools to analyze and further experiment with biological materials. Among them, our current interests are in bone materials, which is complex composite materials with various length-scales and functional properties.
With the advancement of microfluidic …
Opto-Electro-Mechanical Materials and Devices
Nano-electronic, nano-photonic, piezoelectric and piezomagnetic materials show strongly coupled and often nonlinear behavior. Design of devices based on these material systems aims to utilize the nano/micro-scale, nonlinear and strongly correlated effects to enhance various aspects of performance and expand various functional scopes. Understanding fundamental processes involved in fabricating such material system and devices are very important. Thermo-mechanically induced deformation, defects and their effects on structure and properties play significant role on the functional scope and useful life of the device in operation. Current research effort includes investigation of wide bandgap semiconductor heterostructures, nanowire, quantum dot and their three-dimensional environments …
Lighter, Stronger, Thermally and Electromagnetically Shielded Composite Materials
Nanostructures and nanostructured composite form of materials have physical properties, which are most often very different from their bulk form. Often in Nature, this type of nanostructured materials gives rise to important properties in earth and planetary structural consolidation and natural living species. Understanding these processes and ways to make new nanostructures and its combined forms have important applications in designing better structures that involve not only macro-scale geometry but also micro and nano-scale geometries besides physical property based material design. Thermo-mechanical processes and the underlying stability, stiffness, strength, and scheme of micro-scale assembly of nanostructures for better designs …