Dr. Rupinder Singh is currently Professor and Head of the Department of Mechanical Engineering, National Institute of Technical Teacher Training and Research, Chandigarh. He received a Ph.D. in Mechanical Engineering from the Thapar Institute of Engineering and Technology Patiala. His research interests are additive manufacturing, composite filament processing, rapid tooling, metal casting and plastic solid waste managementVinay Kumar is an Assistant Professor at the Marwadi University Research Center, Department of Mechanical Engineering, Marwadi University, Rajkot, India. He received his Ph.D. in Mechanical Engineering from Punjabi University, Patiala. His research addresses additive-manufacturing-based smart materials and programmable thermoplastic composites for the repair and conservation of heritage structures, extending to 3D-printed biomaterials for structural and clinical applications. He is co-editor of the Elsevier volume Additive Manufacturing Solutions for Advanced Veterinary Practice: Clinical Dentistry, Orthopaedic, and Drug Delivery Methods (2025). Nishant Ranjan is an Associate Professor at the Marwadi University Research Center, Marwadi University. He earned his Ph.D. in Mechanical Engineering from Punjabi University, Patiala, and was honoured with the CII MILCA Award in 2022 for contributions to additive manufacturing. His research focuses on fused deposition modelling, extrusion-based processing of thermoplastic polymers, and natural/synthetic biopolymers for scaffold printing, examining the thermal, mechanical, morphological, and chemical behaviour of biocompatible and biodegradable reinforced materials. He is an editorial board member of Scientific Reports and reviews for several peer-reviewed SCI and Scopus-indexed journals. Dr. Ranvijay Kumar is an Associate Professor at the Marwadi University Research Center, Marwadi University, India. He received his Ph.D. in Mechanical Engineering from Punjabi University, Patiala. His expertise includes additive manufacturing, shape memory polymers, innovative materials, friction-based welding techniques, advanced materials processing, polymer matrix composites, reinforced polymer composites for 3D printing, 4D printing, plastic solid waste management, thermosetting recycling, and destructive testing of materials.Dr. Kumar has published several articles and authored books and book chapters. He has also presented research at national and international conferences. He has been listed among the top 2% of world scientists by Stanford University in 2022, 2023, and 2024.

• Section A: Polymer/ polymer composites-based 3D printable materials1. In-house fabrication of extrusion-based polymer and composites for 3D printing2. Sol-gel method for 3D printing of smart polymer materials3. Pulverization as material processing for 3D printed thermoplastics4. Meta-structure base 3D printing of polymers for structural applicationsSection B: Metals-based 3D printable materials5. Atomization and solid-state metal reduction for 3D printing6. Electrolysis and chemical treated metal and alloys for structural engineering applications7. Meta-structures-based metal 3D printing for non-structural applications8. Hybridization of metal 3D printing for smart structuresSection C: Applications and case studies9. Fabrication of smart orthopaedic implants for human and veterinary patients10. Meta-structures based smart repair solutions for structural defects of heritage buildings11. A case study on the fabrication of dental implants and tools for humans12. Some comprehensive studies on compressive properties of metal 3D printed strategic canine tooth13. Meta-structures inspired mesh based smart solutions for surgical practices of diaphragmatic hernia in bovines

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