Dr. Ajay M. Koshti
Nondestructive Evaluation Lead Engineer at NASA Johnson Space Ctr
SPIE Involvement:
Conference Program Committee | Author
Area of Expertise:
Mechanical Engineering , Loads and Stress Analysis , Ultrasonic Stress and Load Measurement , Nondestructive Testing (NDE) , Infrared Thermography , NDE Probability of Detection Analysis
Profile 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 50 research papers. He pioneered analytical models for ultrasonic measurement of interference pressure, bending and shear load in bolted joints. He pioneered normalized “Koshti” contrast data processing in infrared thermography. He has seven patents in infrared thermography. He pioneered limited validation approach for reliable flaw detection in NDE using single and multi-hit detection and analytical models for assessing X-ray crack detectability.
Publications (30)

Proceedings Article | 5 April 2021 Presentation + Paper
Proc. SPIE. 11594, NDE 4.0 and Smart Structures for Industry, Smart Cities, Communication, and Energy
KEYWORDS: Target detection, Statistical analysis, Aerospace engineering, Reliability, Inspection, Nondestructive evaluation, Computer simulations, Tolerancing, Phase only filters

Proceedings Article | 22 March 2021 Presentation + Paper
Proc. SPIE. 11593, Health Monitoring of Structural and Biological Systems XV
KEYWORDS: Target detection, Sensors, Ultrasonography, Reliability, Nondestructive evaluation, Ultrasonics, Transducers, Raster graphics, Spatial resolution, Signal detection

Proceedings Article | 22 March 2021 Presentation + Paper
Proc. SPIE. 11593, Health Monitoring of Structural and Biological Systems XV
KEYWORDS: Signal to noise ratio, Statistical analysis, Radiography, Reliability, Inspection, Nondestructive evaluation, Interference (communication), Analytical research, Phase only filters, Data analysis

Proceedings Article | 22 March 2021 Presentation + Paper
Proc. SPIE. 11592, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XV
KEYWORDS: Error analysis, Manufacturing, Inspection, Nondestructive evaluation, Interference (communication), Direct methods

Proceedings Article | 22 March 2021 Presentation + Paper
Proc. SPIE. 11593, Health Monitoring of Structural and Biological Systems XV
KEYWORDS: Target detection, Statistical analysis, Data modeling, Reliability, Inspection, Nondestructive evaluation, Computer simulations, Signal detection, Phase only filters

Showing 5 of 30 publications
Conference Committee Involvement (13)
Health Monitoring of Structural and Biological Systems XVI
6 March 2022 | Long Beach, California, United States
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI
6 March 2022 | Long Beach, California, United States
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XV
8 March 2021 | Online Only, California, United States
Health Monitoring of Structural and Biological Systems XV
8 March 2021 | Online Only, California, United States
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV
27 April 2020 | Online Only, California, United States
Showing 5 of 13 Conference Committees
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