IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
A reliable and accurate glacial monitoring system is being developed with the help of a UAV and h... more A reliable and accurate glacial monitoring system is being developed with the help of a UAV and high-resolution camera on board. GPS is another major part of system which will help to collect information on glacier melting using reflectrometry principle and complement the information of aerial view of the lake formed due to glacier melting. The information gathered in that way helps the existing human habitat in the vicinity of the glacial lake from Glacial lake Outburst Flood (GLOF), a serious event of North East Indian Himalayan region. The information gathered in that way and generated warning signal are then transmitted to android application which exploits the data for the real time monitoring of the glacier melting as well as increase of area of the lake formed due to glacier melting.
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
A reliable and accurate glacial monitoring system is being developed with the help of a UAV and h... more A reliable and accurate glacial monitoring system is being developed with the help of a UAV and high-resolution camera on board. GPS is another major part of system which will help to collect information on glacier melting using reflectrometry principle and complement the information of aerial view of the lake formed due to glacier melting. The information gathered in that way helps the existing human habitat in the vicinity of the glacial lake from Glacial lake Outburst Flood (GLOF), a serious event of North East Indian Himalayan region. The information gathered in that way and generated warning signal are then transmitted to android application which exploits the data for the real time monitoring of the glacier melting as well as increase of area of the lake formed due to glacier melting.
With abundant sunlight 300 days in a year, cost advantage in the production of solar cell and mod... more With abundant sunlight 300 days in a year, cost advantage in the production of solar cell and modules, India has a huge opportunity to become a super solar power in the world. Solar energy is treated as environment friendly compared to fossil fuels butmanufacturing of Solar cell is not a zero-emission technology. Solar cell production release hazardous gases and requires toxic materials. In India, we are less bother about this danger. But using proper manufacturing process and taking some advanced technology we can reduce the pollution of a solar power plant. Solar energy is perfectly suited for India as compared to many other sunlight starved countries. However at the cell level the pollution should be minimal. The switch to solar energy is must to save this planet and to leave a cleaner world for future generation. In response, solar firms have begunplanning and forming coalitions to recycle used panels before their materials can leachout, trumpeting their efforts to guarantee lif...
Integrating Materials and Manufacturing Innovation, 2021
The efficiencies of jet turbine engines are limited in part by the high-temperature properties of... more The efficiencies of jet turbine engines are limited in part by the high-temperature properties of Ni-based superalloys utilized within turbine blades. Although Mo–Si–B alloys exhibit promising high-temperature properties, traditional materials development approaches relying extensively upon costly trial-and-error experiments inhibit the adoption rate of new materials. The present research seeks to address this problem by developing and demonstrating a computational materials design framework for the design of Mo-Si-B alloys for gas turbine blade applications. The developed framework utilizes: (1) finite element simulations of 280 random microstructure instantiations to predict microstructure- and temperature-dependent yield strength and fracture toughness and their uncertainties; (2) analytical models to predict stresses due to turbine blade rotation; and (3) the inductive design exploration method (IDEM) to determine robust feasible domains of input and intermediate design variables. IDEM considers three input design variables (i.e., operating temperatures of 1273 K and 1473 K, volume fraction of the Molybdenum solid solution phase 0.45 ≤ vMoSS ≤ 0.75, and volume fraction of T2 intermetallic phase 0.125 ≤ vT2 ≤ 0.275) and three intermediate design variables (i.e., yield strength, fracture toughness, and density). Results indicate a maximum feasible temperature of approximately 1295 K at vMoSS and vT2 of approximately 0.45 and 0.18, respectively. This work is significant in that it demonstrates the design of Mo-Si-B alloys for high-temperature blades for aerospace applications, thus providing a means to increase efficiencies and reduce greenhouse gas emissions.
A constitutive crystal plasticity model is proposed and developed for the inelastic deformation o... more A constitutive crystal plasticity model is proposed and developed for the inelastic deformation of irradiated bcc ferritic/martensitic steels. Defects found in these irradiated materials are used as substructure variables in the model. Insights from lower length- and time-scale simulations are used to frame the kinematic and substructure evolution relations of the governing deformation mechanisms. Models for evolution of mobile and immobile dislocations, as well as interstitial loops (formed due to irradiation), are developed. A rate theory-based approach is used to model the evolution of point defects generated during irradiation. The model is used to simulate the quasi-static tensile and creep response of a martensitic steel over a range of loading histories.
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
A reliable and accurate glacial monitoring system is being developed with the help of a UAV and h... more A reliable and accurate glacial monitoring system is being developed with the help of a UAV and high-resolution camera on board. GPS is another major part of system which will help to collect information on glacier melting using reflectrometry principle and complement the information of aerial view of the lake formed due to glacier melting. The information gathered in that way helps the existing human habitat in the vicinity of the glacial lake from Glacial lake Outburst Flood (GLOF), a serious event of North East Indian Himalayan region. The information gathered in that way and generated warning signal are then transmitted to android application which exploits the data for the real time monitoring of the glacier melting as well as increase of area of the lake formed due to glacier melting.
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
A reliable and accurate glacial monitoring system is being developed with the help of a UAV and h... more A reliable and accurate glacial monitoring system is being developed with the help of a UAV and high-resolution camera on board. GPS is another major part of system which will help to collect information on glacier melting using reflectrometry principle and complement the information of aerial view of the lake formed due to glacier melting. The information gathered in that way helps the existing human habitat in the vicinity of the glacial lake from Glacial lake Outburst Flood (GLOF), a serious event of North East Indian Himalayan region. The information gathered in that way and generated warning signal are then transmitted to android application which exploits the data for the real time monitoring of the glacier melting as well as increase of area of the lake formed due to glacier melting.
With abundant sunlight 300 days in a year, cost advantage in the production of solar cell and mod... more With abundant sunlight 300 days in a year, cost advantage in the production of solar cell and modules, India has a huge opportunity to become a super solar power in the world. Solar energy is treated as environment friendly compared to fossil fuels butmanufacturing of Solar cell is not a zero-emission technology. Solar cell production release hazardous gases and requires toxic materials. In India, we are less bother about this danger. But using proper manufacturing process and taking some advanced technology we can reduce the pollution of a solar power plant. Solar energy is perfectly suited for India as compared to many other sunlight starved countries. However at the cell level the pollution should be minimal. The switch to solar energy is must to save this planet and to leave a cleaner world for future generation. In response, solar firms have begunplanning and forming coalitions to recycle used panels before their materials can leachout, trumpeting their efforts to guarantee lif...
Integrating Materials and Manufacturing Innovation, 2021
The efficiencies of jet turbine engines are limited in part by the high-temperature properties of... more The efficiencies of jet turbine engines are limited in part by the high-temperature properties of Ni-based superalloys utilized within turbine blades. Although Mo–Si–B alloys exhibit promising high-temperature properties, traditional materials development approaches relying extensively upon costly trial-and-error experiments inhibit the adoption rate of new materials. The present research seeks to address this problem by developing and demonstrating a computational materials design framework for the design of Mo-Si-B alloys for gas turbine blade applications. The developed framework utilizes: (1) finite element simulations of 280 random microstructure instantiations to predict microstructure- and temperature-dependent yield strength and fracture toughness and their uncertainties; (2) analytical models to predict stresses due to turbine blade rotation; and (3) the inductive design exploration method (IDEM) to determine robust feasible domains of input and intermediate design variables. IDEM considers three input design variables (i.e., operating temperatures of 1273 K and 1473 K, volume fraction of the Molybdenum solid solution phase 0.45 ≤ vMoSS ≤ 0.75, and volume fraction of T2 intermetallic phase 0.125 ≤ vT2 ≤ 0.275) and three intermediate design variables (i.e., yield strength, fracture toughness, and density). Results indicate a maximum feasible temperature of approximately 1295 K at vMoSS and vT2 of approximately 0.45 and 0.18, respectively. This work is significant in that it demonstrates the design of Mo-Si-B alloys for high-temperature blades for aerospace applications, thus providing a means to increase efficiencies and reduce greenhouse gas emissions.
A constitutive crystal plasticity model is proposed and developed for the inelastic deformation o... more A constitutive crystal plasticity model is proposed and developed for the inelastic deformation of irradiated bcc ferritic/martensitic steels. Defects found in these irradiated materials are used as substructure variables in the model. Insights from lower length- and time-scale simulations are used to frame the kinematic and substructure evolution relations of the governing deformation mechanisms. Models for evolution of mobile and immobile dislocations, as well as interstitial loops (formed due to irradiation), are developed. A rate theory-based approach is used to model the evolution of point defects generated during irradiation. The model is used to simulate the quasi-static tensile and creep response of a martensitic steel over a range of loading histories.
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