Nanoindentation Techniques to address the Scale and Rate Dependent issues in Deformation and Fracture of Glass
Glass is an amorphous brittle solid. Since time immortal it is a part of human civilization. However, the science and technology of glass is far from simple. Because it has only short-range order, the local arrangements of atoms and their relative contributions to bond strength play critical roles in defining the structural integrity of glass. There are obviously innumerable applications of glass e.g., specialist borosilicate products; optical glass, optical fiber, fiber laser, radiation shielding window glass, glass for electro technology and electronics; cathode ray tubes; fused silica items; glass seals; X-ray tubes; glass solders; sintered glass; electrodes; glass sealants for solid oxide fuel cells and glass ceramics. These are apart from the conventional usage such as container glass, flat glass, float glass, continuous glass fiber, display window, laser glass, glass wool, domestic appliances including crockery etc.
At the moment, the global market of glass is about US$ 230 Billion and projected to grow to about US$ 330 Billion by 2027. However, all these applications especially the high-end ones demand reasonable structural integrity of the glass to be used. It is where the issues in scale and rate dependent issues in deformation and fracture assume critical importance. Thus, this overview talk will try to highlight mainly how the utilization of the novel nanoindentation technique could be exploited to address the issues in scale and rate dependent issues in deformation and fracture of glass.
However, it will also try to briefly encompass both associated and complimentary techniques like micro-indentation, scratch testing, interaction of nanoindentation and micro-scratch, flexural strength testing, field emission scanning electron microscopy etc. to just highlight the interconnection between deformation features and scale of the event. Finally, some attempt may be made to highlight some aspects which could be motivation for further research in scale and rate dependent issues in deformation of fracture of glass.
Instructor: Dr. Anoop Mukhopadhyay
Dr. Anoop Mukhopadhyay completed his Doctorate in Science from Jadavpur University, Kolkata. He is currently working as the Dean, Faculty of Science at the Manipal University, Jaipur. He is also a Professor in the Department of Physics, School of Basic Sciences at the Manipal University, Jaipur. He has more than 200 publications in SCI journals, 250 national/International conference publications to his credit and has chaired or co-chaired numerous technical sessions in National and International conferences. He has handled crucial projects for DST, CSIR, DAE, DRDO,ISRO, etc and is the recipient of many awards and accolades for his research in characterization of nanomaterials and nano-biomaterials among other things.
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