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Bala Muralikrishnan (Fed)

Dr. Muralikrishnan is a mechanical engineer in the Dimensional Metrology Group in the Sensor Science Division of the Physical Measurement Laboratory (PML) at the National Institute of Standards and Technology (NIST). His research is focused on modelling and detecting errors in advanced dimensional measurement systems such as laser trackers, terrestrial laser scanners, and X-ray CT systems. These mathematical models serve as the scientific and foundational basis for documentary standards for performance evaluation of these systems. Dr. Muralikrishnan is currently the chair of the ASME B89.4.19 committee involved in the revision of the laser tracker standard, participates in the development of ASME and ISO standards for X-ray CT systems, and served as the technical lead for the ASTM E3125-17 standards effort for terrestrial laser scanners. Dr. Muralikrishnan is on the editorial board of Precision Engineering, Surface Topography, and Remote Sensing, and is currently serving as guest editor for a special issue on terrestrial laser scanners for Sensors.



  • ASTM James A Thomas President’s Leadership Award, 2020, for significant contributions, successful leadership of a major new activity and unusually productive service ASTM committee work
  • Edward Bennet Rosa Award, NIST, 2018, for outstanding leadership and technical excellence in initiating and developing performance test methods that have been adopted as international standards for 3D imaging systems
  • Outstanding Paper Award, Measurement Science and Technology 2017, for publication on laser scanner error model parameter determination
  • Kuo K. Wang Outstanding Young Manufacturing Engineer Award by the Society for Manufacturing Engineers, 2007


Performance evaluation of laser trackers using the network method

Ling Wang, Balasubramanian Muralikrishnan, Octavio Icasio Hernandez, Craig M. Shakarji, Daniel S. Sawyer
Due to their accuracy, portability, and large working volume, laser trackers (LTs) are widely used for dimensional metrology in a variety of large-scale
Created October 9, 2019, Updated June 15, 2021