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Koshti, Ajay M.

Dr. Ajay M. Koshti

Nondestructive Evaluation Lead Engineer
NASA Johnson Space Ctr
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Area of Expertise: Mechanical Engineering, Loads and Stress Analysis, Ultrasonic Stress and Load Measurement, Nondestructive Testing (NDE), Infrared Thermography, NDE Probability of Detection Analysis
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Summary
Dr. Ajay Koshti holds B.Tech., M.S., and D. Sc. degrees; and Professional Engineer (PE) certification in Mechanical Engineering. He holds ASNT level III certification in five Nondestructive Evaluation (NDE) methods.
He worked as an NDE engineer on NASA Space Shuttle Program from 1988 to 2011. He also worked as Orbiter Ground Support Equipment (GSE), including Orbiter Handling Equipment (OHE), engineer for six years at Kennedy Space Center. He led the implementation of ultrasonic preload measurements on some Space Shuttle joints and designed Orbiter towing lines on the roads.

Since 2004, he has been working as a lead NDE engineer at NASA Johnson Space Center. Post NASA Shuttle Columbia accident, he led development and implementation of infrared nondestructive testing of Space Shuttle wing leading edge. He chaired NASA Orbiter NDE Working Group and contributed to nondestructive methods used on Space Shuttle Orbiter hardware such as vertical tail lug joints, main propulsion system (MPS) flowliners, MPS valve poppets, composite pressure vessels, midbody boron-aluminum struts, payload bay doors, laminated and honeycomb composite structures.

Since the end of Space Shuttle Program in 2011, he has been working on the NASA International Space Station (ISS) program, NASA Orion MPCV Program, and NASA Commercial Cargo & Crew Programs with SpaceX as a responsible NDE engineer. He co-chairs the NASA Orion MPCV NDE Working Group meeting and NASA Commercial Program NDE Group with SpaceX meeting.
He authored over 30 research papers. He invented analytical models for ultrasonic measurement of interference pressure, bending and shear load in bolted joints. He invented normalized “Koshti” contrast data processing in infrared thermography. He has four patents in infrared thermography. He invented limited validation approach for reliable flaw detection in NDE using single and multi-hit detection. He also invented analytical models for assessing X-ray crack detectability.
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