Smart materials
Shape memory alloys
Materials Characterization
Materials Testing
Structure-Property Correlation in Materials
Mechanical Behaviour of Materials
Composite Materials
Physical Metallurgy
Fatigue and Failure Analysis
Swaminathan G, S. H. Adarsh, M. Bharathi (2025) "Modified Boltzmann Sigmoidal Model for Predicting Functional Fatigue Behaviour of NiTi Shape Memory Alloys", Applied Physics A, 131, 475. DOI: https://doi.org/10.1007/s00339-025-08609-5
Nagarjun J, Senthil Vel M, Swaminathan G (2025) “Effects of High Temperature Deformation and Welding on Microstructure and Thermo-Mechanical Properties of Ti-6Al-4V”, Journal of Materials Engineering and Performance. DOI: https://doi.org/10.1007/s11665-025-11066-z
Swaminathan G, Shreyash Pandey (2025), “Prediction of Thermal Cycling Behaviour of Ni-rich NiTi SMA using Empirical and Artificial Neural Network Modelling”, Discover Materials, 5, 48. DOI: https://doi.org/10.1007/s43939-025-00203-z
Senthilkumar Krishnasamy, R. Sasikumar, Swaminathan G (2025), “Hybrid glass/Kevlar fiber reinforced phenolic matrix composites: Thermal degradation and flammability studies”, Polymer Composites, Published online - DOI: https://doi.org/10.1002/pc.29416
Swaminathan, G, V. Sampath, S. Santosh (2024) “Effect of Cobalt Addition on Thermal Cycling Behaviour of Ti50Ni(50-x)Cox Shape Memory Alloys”, Physica Scripta, 99, 3, 035927. DOI: https://doi.org/10.1088/1402-4896/ad23b5.
Swaminathan, G, V. Sampath, and S. H. Adarsh (2024) “Influence of applied stress on shape memory characteristics of Ni50Ti45Cu5 (at.%) alloy subjected to thermomechanical cycling”, The Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. DOI: https://doi.org/10.1177/14644207241232900.
Swaminathan, G, and V. Sampath (2023) Transformation Behavior of a Shape Memory Ni50.7Ti49.3 (at.%) Alloy during Partial Thermal Cycling, Journal of Materials Engineering and Performance, 32, 2501–2508. DOI: https://doi.org/10.1007/s11665-022-07284-4
Sampath Vedamanickam, Poojalakshmi Vageeswaran, Bharathy Jacob, Swaminathan Ganesan, Khadambari Bhaskaran (2023) Prediction of transformation temperatures of NiTiZr shape memory alloys using artificial neural network. Materials Today Communications, 36, 106712. DOI: https://doi.org/10.1016/j.mtcomm.2023.106712
Swaminathan, G, and V. Sampath (2022) Effect of operating parameters on functional fatigue characteristics of an Ni-Ti shape memory alloy on partial thermomechanical cycling, Journal of Intelligent Material Systems and Structures, 33, 14, 1834–1845. DOI: https://10.1177/1045389X211072233
Swaminathan, G, and V. Sampath (2022) Evolution of Transformation Strain During Partial Transformation Cycling of an NiTi Shape Memory Alloy. IOP Conference Series: Materials Science and Engineering, 1213, 012010, 1-12. DOI: https://doi.org/10.1088/1757-899X/1213/1/012010
Swaminathan, G, and V. Sampath (2021) Observation of Transformation Strain Arrest During Partial Thermomechanical Cycling of an NiTi Shape Memory Alloy. Metallurgical and Materials Transactions A, 52, 3182–3189. https://doi.org/10.1007/s11661-021-06317-2
Swaminathan, G, and V. Sampath (2021) Effect of Mode of Heating on Cyclic Temperature Range during Partial Thermal Cycling under Constant Stress of a Near-Equiatomic Ni-Ti Shape Memory Alloy, Journal of Materials Engineering and Performance, 31, 4, 3120–3126. https://doi.org/10.1007/s11665-021-06410-y
Swaminathan, G, V. Sampath, and S. H. Adarsh (2021) “Influence of Aging Temperature on Functional Fatigue Behavior of a Ti50Ni45Cu5 Shape Memory Alloy”, Transactions of the Indian Institute of Metals, 74, 10, 2435–2446, DOI: https://doi.org/10.1007/s12666-021-02209-6
Swaminathan, G., V. Sampath (2021), “Studies on Thermomechanical Cycling Characteristics of an Ni-Ti-Cu Shape Memory Alloy”, Materials Science Forum, 1016, 1538–1543. DOI: https://doi.org/10.4028/www.scientific.net/MSF.1016.1538
Swaminathan, G (2016), “Experimental Analysis of Hardness and Densification of Microwave Sintered Al/SIC/AL2O3/Flyash Composites”, Indian Journal of Science and Technology, 9, 42, DOI: https://10.17485/ijst/2016/v9i42/103308
1. SMA-Based Fluid Flow Regulator
A shape memory alloy (SMA)-based actuator system designed for automated fluid flow regulation via Joule heating. The device enables controlled deformation of the pipe’s cross-section, suitable for remote and harsh operating environments.
Published on 09 May 2025.
2. Ambidextrous Mini Drafter with Detachable Mechanism
An engineering mini drafter designed with a 360° rotatable drafting head and detachable, repositionable scales, designed for ambidextrous use. The design improves ergonomics and precision in technical drawing for users of all orientations.
Published on 20 June 2025
Received a seed grant of Rs. 1,41,000 from PSG Institute of Technology and Applied Research (Academic Year 2025–26) as Principal Investigator to establish a lab-scale custom-built Electropolishing/Electrothinning setup.
Project member for the DST funded project on Functional Fatigue Aspects of Shape Memory Alloys. The total worth of the project is 45 lakhs.
Project member for the DST-SERB funded project on Development of High Temperature Shape Memory Alloys. The total worth of the project is 60 lakhs.
Title of the Thesis: Functional Fatigue Behaviour of NiTi-Based Shape Memory Alloys under Thermal and Thermomechanical Cycling Conditions.
Abstract of the Thesis:
When shape memory alloys (SMAs) are subjected to thermal/thermomechanical cycling, their functional properties, such as transformation temperatures, recovery strain, recovery stress, and hysteresis, undergo degradation. This tendency is known as functional fatigue. All SMAs, including the most commonly used NiTi alloys, are prone to functional fatigue which results in the degradation of shape memory properties as well as a decrease in the lifespan of the SMA-based components/devices. My research work aims to improve the function fatigue resistance and cyclic stability of NiTi-based SMAs by adopting a partial cycling technique and alloy addition. NiTi SMAs were subjected to partial transformation cycling experiments under different conditions using a custom-built test setup and differential scanning calorimeter, and the optimized parameters to increase their functional fatigue resistance and lifespan were obtained. A new phenomenon was discovered in SMAs during these experiments for the first time and named it as strain memory effect. Developed novel NiTi-based quaternary alloys with higher cyclic stability and tunable transformation temperatures ranging from -80 ℃ to RT. This is one of the most prominent results that has come out of this research work and it has a greater impact from the application point of view.
Notable Outcomes:
Discovered a new phenomenon in NiTi-based shape memory alloys and named it the "Strain Memory Effect". (http://dx.doi.org/10.1007/s11661-021-06317-2)
Achieved superior cyclic stability in NiTi-based quaternary shape memory alloys with tunable transformation temperatures.
Obtained the Institute Research Award for the best Thesis Work for the academic year 2022-23 by IIT Madras.
Swaminathan, G, and V. Sampath (2022) Thermal and Thermomechanical Cycling Studies of Nickel-Based Shape Memory Alloys for Engineering and Medical Applications, Emerging Materials for Performance Specific Applications, Bentham Science Publisher. https://www.eurekaselect.com/chapter/22305
G. Swaminathan and V. Sampath, Influence of Heating Mode on Cyclic Temperature Range of an Ni-Ti Shape Memory Alloy during Partial Transformation Cycling, 6TH International Conference on Materials Science and Engineering, held at Dubai, UAE, during 9-10 November, 2022, (Oral presentation).
G. Swaminathan, V. Sampath and S.H. Adarsh, Artificial Neural Network-Based Prediction of Functional Fatigue Behaviour of an NiTi Shape Memory Alloy, International Conference on Recent Developments in Mechanical Engineering (ICRDME-2022), 24-25 Jun. 2022, Siddaganga Institute of Technology, Tumkur, Karnataka. (Oral presentation).
G. Swaminathan, V. Sampath, Strain arrest phenomenon in NiTi shape memory alloys, 7th International Conference on Material Engineering and Smart Materials (ICMESM-22), 12-14 Jul. 2022, London, UK. (Oral presentation - Online mode).
G. Swaminathan, V. Sampath and S.H. Adarsh, Role of Stress on Transformation Temperatures of an NiTiCu Shape Memory Alloy upon Thermomechanical Cycling, International Mechanical Engineering Congress (IMEC-2019), 29 Nov.- 1 Dec. 2019, NIT Tiruchirappalli, India. (Oral presentation).
G. Swaminathan, V. Sampath, R. Srinithi, S. Santhosh, Effect of copper on functional fatigue behaviour of an NiTi shape memory alloy, National conference NMD-ATM 2019, 13-16 Nov. 2019, Trivandrum, India. (Poster presentation).
G. Swaminathan and V. Sampath, Modelling of Functional Fatigue Behaviour of NiTi Shape Memory Alloy using ANN, National conference NMD-ATM 2022, held at Hyderabad, Telangana, India, during 13-17 November, 2022 (Poster presentation).
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