Vikas Tomar
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View article: Measurement of elastic–plastic shock propagation and phase transition using multi-point time-gated Raman spectroscopy
Measurement of elastic–plastic shock propagation and phase transition using multi-point time-gated Raman spectroscopy Open
This study utilizes in situ multipoint time-gated Raman spectroscopy to simultaneously measure molecular structural changes along with the corresponding changes in mechanical properties in shock-compressed sucrose crystals. The measurement…
View article: In Operando Health Monitoring for Lithium-Ion Batteries in Electric Propulsion Using Deep Learning
In Operando Health Monitoring for Lithium-Ion Batteries in Electric Propulsion Using Deep Learning Open
Battery management systems (BMSs) play a vital role in understanding battery performance under extreme conditions such as high C-rate testing, where rapid charge or discharge is applied to batteries. This study presents a novel BMS tailore…
View article: Data science assisted cohesive finite element modelling of impact behaviour of AP‐HTPB crystal binder composite
Data science assisted cohesive finite element modelling of impact behaviour of AP‐HTPB crystal binder composite Open
In this work, the response of an ammonium perchlorate (AP)‐hydroxyl‐terminated polybutadiene (HTPB) composite material under impact loading is presented, utilizing computational cohesive finite element method (CFEM) simulations that are va…
View article: Direct measurement of internal temperatures of commercially-available 18650 lithium-ion batteries
Direct measurement of internal temperatures of commercially-available 18650 lithium-ion batteries Open
Direct access to internal temperature readings in lithium-ion batteries provides the opportunity to infer physical information to study the effects of increased heating, degradation, and thermal runaway. In this context, a method to insert…
View article: Analysis of Capacity Decay, Impedance, and Heat Generation of Lithium-ion Batteries Experiencing Multiple Simultaneous Abuse Conditions
Analysis of Capacity Decay, Impedance, and Heat Generation of Lithium-ion Batteries Experiencing Multiple Simultaneous Abuse Conditions Open
Abuse of Lithium-ion batteries, both physical and electrochemical, can lead to significantly reduced operational capabilities. In some instances, abuse can cause catastrophic failure, including thermal runaway, combustion, and explosion. M…
View article: Growth, yield and economics of direct seeded non-scented rice (Oryza sativa L.) influenced by integrated nutrient management
Growth, yield and economics of direct seeded non-scented rice (Oryza sativa L.) influenced by integrated nutrient management Open
A field experiment was conducted during the kharif season 2022 at Agriculture research farm, Maharishi Markandeshwar (Deemed to be University), Mullana, Haryana. The experiment conducted in a factorial randomized block design with five tre…
View article: Effect of planting methods and nutrient management on growth, yield and economics of mustard (Brassica rapa L.)
Effect of planting methods and nutrient management on growth, yield and economics of mustard (Brassica rapa L.) Open
Planting methods and nutrient management are the most important factors in increasing the productivity of crop plants. Broadcasting and line sowing are common planting methods for rapeseed-mustard. Among nutrients, nitrogen (N), phosphorus…
View article: High-Strain Rate Spall Strength Measurement for CoCrFeMnNi High-Entropy Alloy
High-Strain Rate Spall Strength Measurement for CoCrFeMnNi High-Entropy Alloy Open
In this study, we experimentally investigate the high stain rate and spall behavior of Cantor high-entropy alloy (HEA), CoCrFeMnNi. First, the Hugoniot equations of state (EOS) for the samples are determined using laser-driven CoCrFeMnNi f…
View article: The Role of Separator Thermal Stability in Safety Characteristics of Lithium-ion Batteries
The Role of Separator Thermal Stability in Safety Characteristics of Lithium-ion Batteries Open
The thermal instability of polymer separators severely threatens the safety characteristics of lithium-ion (Li-ion) batteries. Separators will melt, shrink, vaporize, and collapse under high temperatures, leading to internal short circuits…
View article: Advancements in mechanical Raman spectroscopy for applications in energetic materials
Advancements in mechanical Raman spectroscopy for applications in energetic materials Open
This paper aims to provide a detailed review of the fundamentals and applications of mechanical Raman spectroscopy in the field of energetic materials. Firstly, the principle behind mechanical Raman spectroscopy (MRS) is introduced to meas…
View article: Local Shock Properties Measurement Using Time-Resolved Raman Spectroscopy
Local Shock Properties Measurement Using Time-Resolved Raman Spectroscopy Open
In this article, the dynamic response of a heterogeneous microstructure of polymer bonded composite was analyzed to a short duration shock pulse. The composite microstructure studied is a polymerbonded sugar (PBS) with single-crystal sucro…
View article: Microstructure, Thermal, and Mechanical Properties Relationships in U and UZr Alloys (Final Report)
Microstructure, Thermal, and Mechanical Properties Relationships in U and UZr Alloys (Final Report) Open
Uranium-zirconium (U-Zr) alloys are candidate fuel systems for transmutation based reactors that can be used to burn long-lived minor actinides and fission products in fast spectrum reactors. Metallic fuels have also been gaining more rece…
View article: Lithium-ion Battery Thermal Safety by Early Internal Detection, Prediction and Prevention
Lithium-ion Battery Thermal Safety by Early Internal Detection, Prediction and Prevention Open
Temperature rise in Lithium-ion batteries (LIBs) due to solid electrolyte interfaces breakdown, uncontrollable exothermic reactions in electrodes and Joule heating can result in the catastrophic failures such as thermal runaway, which is c…
View article: Final Report for Project 13-4791: New Mechanistic Models of Creep-Fatigue Crack Growth Interactions for Advanced High Temperature Reactor Components
Final Report for Project 13-4791: New Mechanistic Models of Creep-Fatigue Crack Growth Interactions for Advanced High Temperature Reactor Components Open
This project developed and validated a novel, multi-scale, mechanism-based model to quantitatively predict creep-fatigue crack growth and failure for Ni-based Alloy 617 at 800°C. Alloy 617 is a target material for intermediate heat exchang…