Bai Long


Associate Researcher



Academic Areas:ultrasonic non-destructive evaluation, acoustic signal processing, smart manufacturing

Dr. Long Bai was born in Yanji, China, in 1987. He received the B.Sc. degree in electronic and information science and technology and the M.Eng. degree in dynamical systems and control from Peking University, Beijing, China, in 2010 and 2013, respectively, and the Ph.D. degree in mechanical engineering from the University of Bristol, Bristol, U.K., in 2018.
From 2018 to 2020, he was a postdoctoral research associate with the Ultrasonics and NDT Group, University of Bristol. In May 2020, He joined the School of Mechanical Science and Engineering at Huazhong University of Science and Technology where he works as an associate researcher. His research interests include ultrasonic array imaging, signal processing, and defect characterization. He has published more than 10 papers in leading academic journals including IEEE Trans. Ultrason. Ferroelectr. Freq. Control, NDT E Int., and J. Acoust. Soc. Am. Between April 2014 and September 2017, he worked on a research project which was part of the UK Research Centre in Non-Destructive Evaluation (RCNDE). Between October 2017 and February 2020, he worked as the main University of Bristol researcher in the European Horizon 2020 project ADVISE (ADVanced Inspection of complex StructurEs).

Academic Degrees

2006.09-2010.07 China/Peking University  B.Sc.

2010.09-2013.07 China/Peking University   M.Eng.

2013.09-2018.01 UK/University of Bristol  Ph.D.

Professional Experience

2018.02-2020.02   UK/University of Bristol                                                     Research Associate

2020.05-Present   China/Huazhong University of Science and Technology   Associate Researcher

Selected Publications

1. Long Bai, Alexander Velichko, Adam T. Clare, Paul Dryburgh, Don Pieris, Bruce W. Drinkwater.The effect of distortion models on characterisation of real defects using ultrasonic arrays.NDT & E INTERNATIONAL.2020,113:102263

2. Long Bai, Alexander Velichko, and Bruce W. Drinkwater.Grain scattering noise modelling and its use in the detection and characterization of defects using ultrasonic arrays.IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL.2019,66(11):1798-1813

3. Chaoyong Peng, Long Bai, Jie Zhang, and Bruce W. Drinkwater.The sizing of small surface-breaking fatigue cracks using ultrasonic arrays.NDT & E INTERNATIONAL.2018,99:64-71

4. Long Bai, Alexander Velichko, and Bruce W. Drinkwater.Ultrasonic defect characterisation-Use of amplitude, phase, and frequency information.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA.2018,143(1):349-360

5. Alexander Velichko, Long Bai, and Bruce W. Drinkwater.Ultrasonic defect characterization using parametric-manifold mapping.PROCEEDINGS OF THE ROYAL SOCIETY A: MATHEMATICAL, PHYSICAL AND ENGINEERING SCIENCES.2017,473(2202):20170056

6. Long Bai, Alexander Velichko, and Bruce W. Drinkwater.Characterization of defects using ultrasonic arrays: A dynamic classifier approach.IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL.2015,62(12):2146-2160

7. Long Bai, Alexander Velichko, and Bruce W. Drinkwater.Ultrasonic characterization of crack-like defects using scattering matrix similarity metrics.IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL.2015,62(3):545-559

8. Xun Huang, Chi Xu, and Long Bai.Is the cochlea coiled to provide sound localization?.EUROPHYSICS LETTERS.2012,98(5):58002

9. Xun Huang, Long Bai, Igor Vinogradov, and Edward Peers.Adaptive beamforming for array signal processing in aeroacoustic measurements.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA.2012,131(3):2152-2161

10. Long Bai and Xun Huang.Observer-based beamforming algorithm for acoustic array signal processing.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA.2011,130(6):3803-3811

11. Xun Huang, Igor Vinogradov, Long Bai, and Jianchao Ji.Observer for phased microphone array signal processing with nonlinear output.AIAA JOURNAL.2010,48(11):2702-2705

Awards and Honors

1. University of Bristol Postgraduate Research Scholarship  2013-2017

2. Excellent Graduates in Beijing        2013

3. National Scholarship of China        2012

Courses Taught


1. European Union's Horizon 2020 Project: Advanced Inspection of Complex Structures  2017.10-2020.02

2. UK Research Council in Non-Destructive Evaluation 2014.04-2017.09