• Teaching sophomore-level class (AAE 204) to introduce aerospace engineering students to the mechanics of solids concepts of force/stress/equilibrium, deformation/strain/compatibility, and stress/strain material behaviors.• My research is focused on the development of cutting-edge technology through the intersection of advanced materials, experimental mechanics, and advanced manufacturing techniques.

• Elucidated the chip formation mechanisms and the effect of rock microstructure during orthogonal cutting of sedimentary rocks by using synchronous high-speed in situ imaging and force measurements. Performed post mortem analysis of cutting chips and instrumented nanoindentation tests to characterize the ductile-brittle transition depth in Indiana limestone.• Demonstrated the development of shear bands due to the sliding of a hard, wedge-shaped model asperity against a pre-strained brass… Show more • Elucidated the chip formation mechanisms and the effect of rock microstructure during orthogonal cutting of sedimentary rocks by using synchronous high-speed in situ imaging and force measurements. Performed post mortem analysis of cutting chips and instrumented nanoindentation tests to characterize the ductile-brittle transition depth in Indiana limestone.• Demonstrated the development of shear bands due to the sliding of a hard, wedge-shaped model asperity against a pre-strained brass surface. Used particle image velocimetry to perform in situ strain mapping. Show less

• Developed tools and helped establish in-house sample preparation and measurement facilities for high through-put fiber orientation and length distribution measurements of injection molded long carbon fiber composites. • Used various image processing techniques to develop software in Matlab for semi-automated stereological measurement of three dimensional fiber orientation distribution and fiber length distribution measurement using optical microscope images. • Performed bias analysis… Show more • Developed tools and helped establish in-house sample preparation and measurement facilities for high through-put fiber orientation and length distribution measurements of injection molded long carbon fiber composites. • Used various image processing techniques to develop software in Matlab for semi-automated stereological measurement of three dimensional fiber orientation distribution and fiber length distribution measurement using optical microscope images. • Performed bias analysis of current experimental techniques to demonstrate sources of systematic, measurement, and sampling errors affecting fiber orientation and length distribution measurements. Suggested improved methods to reduce errors and improve measurement fidelity. Show less

AAE 553: Elasticity in Aerospace Engineering Fall 2013• Designed and taught several full lectures in absence of professor.• Taught bi-weekly recitation to supplement course lectures for students requiring additional assistance.• Graded student assignments and project reports.

• Obtained closed form solution for local resonance and Bragg-gaps induced by periodically inserted resonators in sandwich structures. Validated the presence of a wide, low-frequency bandgap created due to interaction of local resonance and periodicity effects using FE analysis. Experimentally demonstrated the interaction between the two bandgaps. •Numerically demonstrated the effectiveness of resonators in attenuating flexural waves generated due to blast loads. Performed drop tower… Show more • Obtained closed form solution for local resonance and Bragg-gaps induced by periodically inserted resonators in sandwich structures. Validated the presence of a wide, low-frequency bandgap created due to interaction of local resonance and periodicity effects using FE analysis. Experimentally demonstrated the interaction between the two bandgaps. •Numerically demonstrated the effectiveness of resonators in attenuating flexural waves generated due to blast loads. Performed drop tower experiments to measure impact response of sandwich beams with and without resonators and experimentally demonstrated the ability of resonators to attenuate impact loads.•Designed a wide band, low frequency, high transmission loss acoustic filter using acoustic and elastic resonators. Developed fully coupled acoustic-structural finite element models to obtain the transmission loss coefficients. Utilized parameter retrieval method to demonstrate the negative effective density and negative effective bulk modulus behavior of membrane-type and expansion chamber Metamaterials. Demonstrated the presence of a tunable pass-band associated with double negative Metamaterial behavior. •Designed and manufactured sandwich beam with resonators and composite facesheets. Experimentally demonstrate bandgap creation due to local resonance phenomena. Manufactured sandwich beams with resonators tuned to the first beam natural frequency. Experimentally demonstrated the antiresonance phenomena. Demonstrate the effectiveness of sandwich beams with resonators in attenuating narrow banded, low frequency loading associated with hull slamming. Show less

• Setup dynamic testing facility. Implemented data acquisition system and a dynamic testing GUI using LabVIEW. Designed and manufactured impact pendulum test rig to allow longitudinal and transverse impact tests. Modified high temperature fretting fatigue rig to allow for steady state vibration tests.• Performed routine health and safety audits and assisted in machine maintenance. Established and implemented physical security guidelines and protocols. Ensured lab cleanliness. •… Show more • Setup dynamic testing facility. Implemented data acquisition system and a dynamic testing GUI using LabVIEW. Designed and manufactured impact pendulum test rig to allow longitudinal and transverse impact tests. Modified high temperature fretting fatigue rig to allow for steady state vibration tests.• Performed routine health and safety audits and assisted in machine maintenance. Established and implemented physical security guidelines and protocols. Ensured lab cleanliness. • Maintained and updated lab documentations (such as lab rules, machine descriptions, procedure manuals).• Trained and assisted new lab members in proper machine use. Routinely assisted in machine troubleshooting.• Scheduled and coordinated lab facility usage for external research groups. • Conducted lab inventory checks and managed lab supply procurement and disposal. Show less

• Graduate Teaching Assistant for Introduction to Mechanical Engineering Design (ME263 for undergraduates)•Assisted students with projects and provided guidance on design principles. •Graded student homework assignments and reports.

•Investigated possibility of utilizing dual phase high strength steel alloys for vehicle body construction in order to reduce vehicle weight while increasing dent resistance and energy absorption capacity.•Studied four different steels in order to compare their springback behavior. Performed stamping simulations using PAMSTAMP 2G in order to predict springback as a function of angular deviation.•Performed experiments in order to obtain material parameters. Assisted in cutting… Show more •Investigated possibility of utilizing dual phase high strength steel alloys for vehicle body construction in order to reduce vehicle weight while increasing dent resistance and energy absorption capacity.•Studied four different steels in order to compare their springback behavior. Performed stamping simulations using PAMSTAMP 2G in order to predict springback as a function of angular deviation.•Performed experiments in order to obtain material parameters. Assisted in cutting out blank sections and in forming process using a 650T press in order to obtain final test components.•Obtained component profile at 5 different sections using Zeiss CMM. •Suggested springback correction procedures in order to allow use of HSSA. Participated in initial implementation of die modification in order to correct springback behavior. Show less

•Studied possibility of low cost modernization of traditional jute looms. •Assisted in installation of a traditional jute loom. Studied the jute weaving procedure and the important working mechanisms.•Designed and implemented a rapier mechanism to replace the existing shuttle mechanism.