Prof. Mark J. Schulz, Director, Nanoworld Laboratories, University of Cincinnati, Cincinnati, Ohio, USA

Title: Carbon Nanotube Hybrid Fabric: Tougher than the Rest

Abstract: There are two main problems in Carbon Nanotube (CNT) fabric manufacturing; throughput is low, thus cost is high, and properties of the fabric must be improved to open up more applications. UC Nanoworld Labs is developing a gas phase pyrolysis process that injects fuel into the hot zone of a very short reactor to increase the rate of production of CNT fabric, and nanoparticle injection into the synthesis process is used to customize the properties of the CNT fabric. Science, manufacturing, and commercialization of the CNT fabric are discussed in this lecture.

Prof. Ayech Benjeddou, ROBERVAL Laboratory of the Université de Technologie de Compiègne (UTC) & Centre National de la Recherche Scientifique (CNRS), Compiègne, France & Institut Supérieur de Mécanique de Paris (SUPMECA), Saint Ouen, France

Title: Piezoelectric materials and structures: key issues for successful test/model correlation

Abstract: This plenary lecture presents piezoelectric-based smart materials and structures mathematical, mechanical and technological key issues for their successful test/model correlation. First, the mechanical displacements-electric potential-based variational and finite element (FE) formulations, the so-called induced potential (IP) effect and its implementation in common commercial and in-house FE codes are discussed. Then, the practical FE simulation of the experimentally observed field-dependent nonlinear piezoelectric actuation response is presented for adhesively bonded shear macro-fibre composite patches. Next, the mechanical and technological issues of the bolted clamping and electric connections, respectively, and their FE implementations are illustrated for trimorph (symmetric) smart benders. Some comments on the mechanical modelling of unimorph (asymmetric) benders are also given. Finally, the effects of the physical equipotential (EP) mathematical constraints, resulting from the piezoelectric patches electrodes, on the test/model correlation of smart structures experiments are highlighted. It is shown, in particular, that the technological EP effect is higher than the mathematical IP one. Besides, it is shown that the former not only uncouples electro-mechanically the in-plane and torsion vibration modes, but also reduces the so-called effective electromechanical coupling coefficient, a key performance indicator of popular smart structures applications, such as piezoelectric shunted damping, vibration-based energy harvesting and frequency-based active damage detection.

Prof. S. Gopalakrishnan, KSIIDC Chair Professor, Department of Aerospace Engineering, Indian Institute of Science, Bangalore, India

Title: Sensor Technologies for Structural Health Monitoring of Aerospace Structures

Abstract: The success of any Structural Health monitoring techniques depends on accurate sensing. Although myriad of sensing methods are available, using them in aircraft health monitoring is quite difficult due to variety of reasons. Unlike machinery health monitoring, aircraft health monitoring is quite complex involving multiple disciplines. This talk will highlight some of the existing sensing methodologies used in aircrafts, their advantages and disadvantages. The talk will also highlight some of the novel sensing methodologies developed at IISc using some practical applications in aircraft sub-systems

Prof. S. P. Singh, Indian Institute of Technology, Delhi

Title: Mechanical Behavior of bio-materials using Molecular Dynamic simulations.

Abstract: The talk will focus on simulation aspects of bio-materials with specific focus on silk fibrion, which when used in the form of a composite is a good candidate mateiral for orthopediac transplant. The molecular arrangement of silk fibroin produces a profound effect its properties which is being explored in detail. Effect of hygro environment is another important factor in evaluation of the properties of silk. Stress strain behavior as well as the various deformation mechanisms operating in silk fibrion are studied.

Prof. Shantanu Bhattacharya, Indian Institute of Technology, Kanpur

Title: Printed and Flexible Energy Storage for Next Generation of Electronic Devices

Abstract: Inkjet printing is considered to be a very promising additive manufacturing method for fabrication of electronic devices on deposited thin films. A direct application area may be in the flexible electronics domain where energy storage solutions realized through the printing of main power generating devices through thin film processes is an industry need The energy storage unit is a very critical aspect of the power generation assembly particularly in applications related to intermittent energy sources although printable solutions for manufacture of these is still at a fledgling stage and needs lot of developments. The lack of high-performance energy storage units with the required flexibility, scalability issues related to high-volume manufacturing, and improper design of the device structure are still some of the major challenges for their development. To address these issues, we have through manipulation of nano-materials been able to fabricate printed, solid-state, flexible Lithium ion super-capacitors (SCs) through a high yield desktop printing metholdology on cellulose paper and textile fabrics. Further in this printing process the physical properties of all inks have been carefully optimized so that the developed inks are within the printable range which may correspond to a Fromm number of 4< Z < 14 for a the different inks. The substrates were have also been made sufficiently conducting through a layer by layer printing approach where reduced Graphene oxide (rGO) ink has been used over various surfaces. The other device components for such a printed super-capacitor,i.e. positive electrode, negative electrode and the electrolyte have also been all printed usig the power provided by a computer aided design process so that this technology can be scaled up to industry requirements. The developed SCs have been thoroughly charecterized and are found to exhibit outstanding flexibility, good cyclic stability, high rate capability, high energy density, reproducibility, repeatability etc. In addition, the presented method is highly scalable, with control over the device thickness, dimensions, size and shape of the.