Rohan Deep Chawla Email & Phone Number

Saginaw, Michigan, United States

Seymour, Indiana, United States

- Development and review of test plans with design and validation teams to validate new designs for vibration and durability testing of components- Correlated CAE simualtion models (using Ansys and FEM Tools) to test data to ensure robustness of the prediction performed from the simulation models- Working on the implementation of condition health monitoring of engines in test cells to automatically shut-off engines before vibration magnitudes at certain locations exceed predefined critical limits. Thus avoiding downtime in test cells due to breakage of components.

Indiana

- Performed Experimental Modal impact and Modal shaker tests on components to determine system natural frequencies, shapes, and damping. - The responses at modal frequencies are also determined during engine operational conditions (ODS) (both at elevated and normal temperatures) to gauge its effect on the durability of the components. - Performed strain measurements during engine operating conditions to determine design safety factors for the components as well as for calibration of simulation models.- Signal post-processing of data using LMS Testlab to perform sanity check during testing and to identify critical vibration parameters affecting design after required experimental testing is completed.- Creation of technical reports to include technical summary from testing results and suggest recommendations for design improvement.

Coursework includes Rotordynamics, Applied Fast Fourier Transform and Elasticity

Stoughton, Wi, Usa

- Created random vibration PSD profiles from field measured data for comparison with existing vibration profiles and to test new products.- Performed random vibration PSD and Sine Sweep tests on single axis shaker to determine fatigue life of various components.- Supported durability tests to detect fracture and identify critical areas for Cummins aftertreatment systems.- Executed static load lift hook tests on Cummins after-treatment systems to replicate different lifecycle loads.- Presented results and conclusions of durability tests to the customer and documented the findings in the form Cummins technical reports.

Cincinnati, Ohio Area

Built the complete frame model to simulate stresses on the pod during operational conditions and then optimizing the sub-assemblies to reduce stresses on the frame.

Pune Area, India

- Executed reviews with cross-functional teams to identify potential NVH issues and suggest design recommendations. - Simplified the process of evaluating air-filters and muffler's structural design by identifying points of weak dynamic stiffness at critical modal frequencies using automation scripts developed in Visual Basic.- Developed a methodology for modal correlation and correlated engine components part by part to make a fully correlated Finite Element (FE) model of an engine assembly.- Developed a methodology for complete engine noise prediction by mapping loads obtained from Multi-body dynamic simulation.- Developed a code in Visual Basic to generate a load files which distributes Crank train and Valve train forces as bearing load profile on to the engine structure for Modal and Direct Transient solution.- Estimated piston slap noise by mapping the forces generated from Multibody dynamics software (PISDYN software (Ricardo)) over complete engine cycle on the piston liner and performing harmonic analysis using those loads.- Coached new graduate trainee engineers in concepts of Noise and Vibration and its practical implementation to automotive industry ---- Excellent Performance ratings (A+) for 4 quarters.

Pune Area, India

- Performed normal modes and frequency response analysis on different engine components to replicate its dynamic behavior for sound quality prediction.- Performed Panel contribution analysis on complete engine assemblies to determine which side of the engine is contibution more to higher SPL levels.- Analysis and optimization of Exhaust Muffler and Air-Filter's internal and structural designs to improve sound quality of vehicle.- Optimization of geometry of engine components to eliminate structure-born noise using Optistruct.-Worked closely with design teams to suggest recommendations to improve overall NVH performance of the vehicle.- Simulated In-cabin noise of 4-wheeler "RE60" through vibro-acoustic coupling using LMS Virtual lab and recommended modification of critical areas (luggage panel, Roof panel, engine mounts) for noise radiation- Developed a design and manufactured a prototype of muffler configuration to generate a sporty note from a single cylinder engine similar to a note produced from a multi-cylinder engine. ---- Excellent Performance rating (A+) for this project.- Pass-by noise prediction from Air-Filter and Muffler using Vibro-Acoustic methodology to reduce overall noise and improve sound quality of the vehicle. ----Rated Excellent performer (A+) for 2010-11 among all GTE’s

Udacity Nanodegree Program Graduate, Self Driving Car Engineer

-Coded in C++ and Python to implement various algorithms such as Canny edge detection, Hough Transforms, Kalman Filters, Particle filter.

Master'S Degree, Mechanical Engineering, 3.90/4.00

Bachelor Of Technology (B.Tech.), Mechanical Engineering

Education record