Dr.-Ing. Balaji Ragupathi
Dr.-Ing. Balaji Ragupathi
ZHAW
School of Engineering
Fiber-Reinforced Plastics section
Technikumstrasse 9
8400 Winterthur
Work at ZHAW
Position
Research Associate
Experience
- Research Associate
ZHAW Zurich University of Applied Sciences | IMPE
10 / 2025 - today - Research Associate / PhD Candidate
University of Freiburg | INATECH EFM
03 / 2021 - 09 / 2025 - Research Associate | Crash Safety and Damage Mechanics
Fraunhofer Institute for Mechanics of Materials IWM, Freiburg i. Br.
07 / 2019 - 02 / 2021
Education and Continuing education
Education
- Dr.-Ing. / Power Ultrasonics
University of Freiburg | INATECH EFM
03 / 2021 - 07 / 2025 - M.Sc. / Sustainable Systems Engineering SSE
University of Freiburg
10 / 2016 - 07 / 2019 - B.E. Mechanical Engineering
Anna University Chennai
05 / 2012 - 04 / 2016
Network
ORCID digital identifier
Social media
Publications before appointment at the ZHAW
- B. Ragupathi, Value-retention of thermoplastic fiber-reinforced composites by ultrasonic-assisted separation and reconsolidation, PhD Thesis, University of Freiburg, Supervisor F. Balle, 269887 (2025).
- B. Ragupathi, M. Walter, B. Fiedler, F. Balle, Feasibility study on ultrasonic-assisted processing techniques for the value-retention of hybrid thermoplastic-thermoset composites, Composites Part A, 199:109249 (2025)
- B. Ragupathi, S. Strahringer, M. Rienks, P. Jakkula, J. Höhe, F. Balle. “Fracture toughness characterization of carbon-fiber reinforced thermoplastic composites under ultrasonic frequency”. Polymer Composites, 1-15 (2025).
- B. Ragupathi, L. Burger, F. Balle. “Post-joining thermal characteristics and repair integrity of carbon fiber-reinforced thermoplastic composites during ultrasonic reconsolidation at 20 kHz”. Composites Part C: Open Access, 16:100565 (2025).
- B. Ragupathi, L. Rotzinger, M. Prescher, M. Rienks, L. Kirste, F. Balle, “Ultrasonic reconsolidation of separated CF-PEEK composite layers at 20 kHz – Experimental study on parameter optimization and ex-situ characterization”, Composite Structures, 353:118722 (2025).
- B. Ragupathi, P. Jakkula, M. Rienks, F. Balle, “Online monitoring of pre-crack initiation in carbon fiber-reinforced thermoplastic composites by an ultrasonic cutting tool using high-speed optical imaging and infrared thermography”, Ultrasonics, 143:107411 (2024).
- B. Ragupathi & F. Balle, “Characterization of glass-fiber reinforced thermoplastic composite after ultrasonic reconsolidation”, European Journal of Materials, 4(1):2313316 (2024),
- B. Ragupathi, M. F. Bacher, F. Balle, “Separation and reconsolidation of thermoplastic glass fiber composites by power ultrasonics”, Resources, Conservation and Recycling 198:107122 (2023).
- B. Ragupathi, M. F. Bacher, F. Balle, “First efforts on recovery of thermoplastic composites at low temperatures by power ultrasonics”, Cleaner Materials 8:100186 (2023).
- Huberth, F., Ragupathi, B., Scheffler, C., Psyk, V., Preußner, J. (2021). Local Microscopic and Integral Macroscopic Analysis of Magnetic Pulse Welds and Deformations for Dissimilar Metal Joints. Forming the Future. The Minerals, Metals & Materials Series. Springer, Cham.
- Huberth F, Lienhard J, Ragupathi B, Hauber M (2019) Dynamic micro-testing over a large range of strain rates for homogenous and heterogeneous local material characterization. WIT Trans Eng Sci, Mater Contact Characterisation IX 124: 143–150.