Experience

INATECH

• Germany
• Research Services
• 1 - 100 Employee

• PhD Research Fellow

  • Sep 2019 - Present

  Investigating the dynamic behavior of materials using novel measuring principles likeSplit-Hopkinson methods to achieve fast loading rates in combination with fast infraredtemperature measurements. Aiming to separate adiabatic heating effects, a.k.a thermalsoftening, from strain-rate dependent stiffening in polymers.

• Research Assistant

  • Nov 2017 - Aug 2019

  Automotive material testing and characterization using Split-Hopkinson Tension Bar.Design, manufacturing, and simulation of a new setup called Direct-Impact Tension Bar for achieving longer pulse duration.

• Master Thesis - Direct Impact Tension Bar for Testing at Intermediate Strain-Rate

  • Jul 2018 - May 2019

  '' A Direct Impact Tension Bar is developed for intermediate strain rate testing to bridge the gap between servo-hydraulic universal testing machines and the classical Split-Hopkinson Tension Bar. While the servo-hydraulic testing machines work well up to strain rates of 10 /s, and classical Split-Hopkinson Tension Bar perform well for strain rates above 500 /s, testing in the intermediate strain rate regime of approx. 100 /s has traditionally been difficult. In my work, I have investigated possible concepts for realizing a direct tension bar, which is similar to the already known direct pressure Hopkinson bars in so far as that no input bar is present. I have conducted several parameter studies using LS-Dyna for finding an optimal design, including analytical solutions for the time evolution of strain rate and stress. A prototype version of 40 m long bar with 16 ms of usable experimental pulse duration has been built and in satisfactory agreement with explicit Finite Element Simulations. ''

• Master Project - High strain rate material charaterisation of flexible adhesives

  • Dec 2017 - Mar 2018

  A design model of Direct and Split-Hopkinson Tenison Bar is simulated with explicit time integration in commercial code LS-Dyna. Material characterization of polyurethane adhesive is performed under dynamic loading conditions on Split-Hopkinson Tension Bar.



ESRF - The European Synchrotron

• France
• Research Services
• 300 - 400 Employee

• Visiting Scientist

  • Feb 2022 - Feb 2022

  Quasi.-static and dynamic tension experiments of additively manufactured (AM) Al-Mg-Sc alloy Sacalmalloy are being investigated using High-speed synchrotron X-ray imaging coupled with a modified Split-Hopkinson Tension bar and in-house QS testing device. The fast failure mechanisms were realized under ultra-fast X-Rays radiography captured by a High-speed camera at 2 million FPS. Quasi.-static and dynamic tension experiments of additively manufactured (AM) Al-Mg-Sc alloy Sacalmalloy are being investigated using High-speed synchrotron X-ray imaging coupled with a modified Split-Hopkinson Tension bar and in-house QS testing device. The fast failure mechanisms were realized under ultra-fast X-Rays radiography captured by a High-speed camera at 2 million FPS.



DYMAT International Conference 2021

• Madrid, Community of Madrid, Spain

• Scientific Presenter at Conference

  • Sep 2021 - Sep 2021

  13th International Conference On Mechanical And Physical Behaviour Of Materials Under Dynamic Loading 13th International Conference On Mechanical And Physical Behaviour Of Materials Under Dynamic Loading



ESRF - The European Synchrotron

• France
• Research Services
• 300 - 400 Employee

• Visiting Scientist

  • Aug 2021 - Aug 2021

  Quasi-static and dynamic tension/compression tests were performed at ID 19 of ESRF. Additively manufactured metal - Scalmalloy; Fiber reinforced composites - Basalt fiber; Brass, Polycarbonate, Pure Aluminium, Concrete and Ceramics were some of the materials investigated. The fast failure mechanisms were realized under ultra-fast X-Rays radiography captured by a High-speed camera at 2 million FPS.

• Visiting Scientist

  • Jul 2021 - Jul 2021

  Installation of new Split Hopkinson Tension Bar at ID19 of ESRF. To study the dynamic fracture and response of additively manufactured metals and materials under impact and high strain rates with in-situ MHz X-Rays.



DYMAT Winter School 2020

• Les Houches, Auvergne-Rhône-Alpes, France

• Scientific Presenter at Conference

  • Feb 2020 - Feb 2020

  "Experimental testing and modelling of materials at high strain-rates" The dynamic behavior of materials is present through a large number of applications such as impact loadings, blasting and detonation, modern production processing, brittle failure of solids and structures… In such cases the material behavior is no longer quasi-static and the dynamic behavior of the materials needs to be properly accounted for. "Experimental testing and modelling of materials at high strain-rates" The dynamic behavior of materials is present through a large number of applications such as impact loadings, blasting and detonation, modern production processing, brittle failure of solids and structures… In such cases the material behavior is no longer quasi-static and the dynamic behavior of the materials needs to be properly accounted for.



Fraunhofer Institute for Mechanics of Materials IWM

• Research Services
• 100 - 200 Employee

• Research Assistant

  • Apr 2017 - Sep 2017

  Dynamic simulation and characterization of flax fiber materials using DFT methods. Dynamic simulation and characterization of flax fiber materials using DFT methods.



ASME (The American Society of Mechanical Engineers)

• Non-profit Organizations
• 700 & Above Employee

• Campus Ambassador

  • Mar 2013 - Apr 2016

  Organised workshops on 3D printing, Robotic arm and Model rocketry. Organised guest lectures by Scientist's from BHEL and Mahindra. Industry visit to L&T, hyderabad. Organised workshops on 3D printing, Robotic arm and Model rocketry. Organised guest lectures by Scientist's from BHEL and Mahindra. Industry visit to L&T, hyderabad.



Bharat Heavy Electricals Limited

• India
• Appliances, Electrical, and Electronics Manufacturing
• 700 & Above Employee

• Intern

  • Jun 2014 - Aug 2014

  Worked on the design and manufacturing of steam turbines and heat ex-changers. Worked on the design and manufacturing of steam turbines and heat ex-changers.