Professor Kamran Mumtaz
School of Mechanical, Aerospace and Civil Engineering
Professor in Advanced Manufacturing
Mechanical Engineering Postgraduate Admissions Tutor
k.mumtaz@sheffield.ac.uk
+44 114 222 7789
+44 114 222 7789
Sir Frederick Mappin Building
Full contact details
Professor Kamran Mumtaz
School of Mechanical, Aerospace and Civil Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
School of Mechanical, Aerospace and Civil Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
- Profile
-
I obtained my PhD in laser-based additive manufacturing of superalloys for aerospace (2008) and an MSc in Manufacturing Management (2005) from Loughborough University, following a BEng (Hons) in Aeronautical Engineering. Since then, I have been at the forefront of additive manufacturing (AM) research, leading a team focused on developing novel metallic and composite AM technologies. My research aims to enhance material performance, process efficiency, and industrial scalability, enabling the production of high-performance components for aerospace, medical, and energy applications.
Beyond my research, I am committed to developing international research collaborations and fostering global knowledge exchange in additive manufacturing. I actively collaborate with leading research institutions in Mexico, South Korea, and India, working on joint research initiatives, industrial partnerships, and knowledge-sharing networks. Additionally, I play a key role in supporting the postgraduate research network with these countries, strengthening academic partnerships and training the next generation of AM specialists.
- Research interests
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I specialise in developing advanced Additive Manufacturing (AM) processes for metallic and composite materials, with a primary focus on Laser Powder Bed Fusion (LPBF) and my research aims to enhance material performance, process efficiency, and industrial scalability.
My research has been supported by UK Industry, the Engineering and Physical Sciences Research Council (EPSRC), Innovate UK (IUK), and International funding bodies. These grants have enabled the development of cutting-edge AM technologies and contributed to advancing knowledge in the field of metallic and composite AM.
Novel Manufacturing System Development
To push the boundaries of AM, my team and I develop bespoke AM systems tailored to novel material processing and hybrid manufacturing approaches. This research includes:
- Design and manufacture of multi-laser diode architectures, enabling scalable and efficient melting of metallic feedstock (diode area melting).
- Enhanced thermal control of the melt pool, improving stress reduction, microstructural/mechanical property customisation, and expanding the range of processable alloys.
- Binder jetting technologies for multi-material processing and carbon fibre-based AM part fabrication.
Residual Stress Control & Process Optimisation
A key challenge in AM is residual stress accumulation, which can lead to distortion, cracking, and mechanical failure. My research focuses on stress reduction strategies, including novel laser pre-heating techniques and in-situ monitoring to mitigate thermal stresses, improve dimensional stability, and enhance the structural integrity of AM components.
Multi-Material & Functionally Graded Structures
By integrating different material systems within a single build, multi-material and functionally graded structures offer unprecedented design flexibility. My team explores developing hardware to enable novel alloy composition delivery, microstructural control techniques, and process parameter optimisation to enable seamless material transitions and customised mechanical properties in AM parts.
- Publications
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Journal articles
- Diode area melting of SS316L using low power 450 nm lasers. The International Journal of Advanced Manufacturing Technology. View this article in WRRO
- Influence of heat treatment on microstructure and magnetic properties of laser powder bed fusion generated NdFeB magnets. Progress in Additive Manufacturing. View this article in WRRO
- Laser powder bed fusion of Ti6Al4V using low-cost high efficiency 450 nm diode point melting. Journal of Materials Research and Technology, 34, 2814-2827. View this article in WRRO
- Novel use of laser melting and optical pre-heat to control white etching layer formation on rail steels. Tribology International, 204. View this article in WRRO
- Dual-laser powder bed fusion using 450 nm diode area melting and 1064 nm galvo-scanning fiber laser sources. Materials & Design, 248. View this article in WRRO
- Use of aqueous polyvinyl alcohol in binder jetting of Inconel 718. The International Journal of Advanced Manufacturing Technology, 135(5-6), 2355-2372. View this article in WRRO
- Laser powder bed fusion of NdFeB and influence of powder bed heating on density and magnetic properties. The International Journal of Advanced Manufacturing Technology, 132(9-10), 5017-5038. View this article in WRRO
- “Multi-laser powder bed fusion of Ti6Al4V: diode area melting utilizing low-power 450 nm diode lasers”. Journal of Materials Processing Technology. View this article in WRRO
- Effect of substrate bed temperature on solute segregation and mechanical properties in Ti–6Al–4V produced by laser powder bed fusion. Metallurgical and Materials Transactions A, 54(8), 3069-3085. View this article in WRRO
- Additive manufacturing of high density carbon fibre reinforced polymer composites. Additive Manufacturing, 58.
- Diode area melting of Ti6Al4V using 808 nm laser sources and variable multi-beam profiles. Materials and Design, 215.
- Integrated fabrication of novel inkjet-printed silver nanoparticle sensors on carbon fiber reinforced nylon composites. Micromachines, 12(10).
- Use of 450-808 nm diode lasers for efficient energy absorption during powder bed fusion of Ti6Al4V. The International Journal of Advanced Manufacturing Technology, 113(9-10), 2461-2480.
- Fabricating poly(methyl methacrylate) parts using high-speed sintering. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 234(1-2), 118-125. View this article in WRRO
- Effect of pre-emptive in-situ parameter modification on residual stress distributions within selective laser melted Ti6Al4V components. International Journal of Advanced Manufacturing Technology, 103(9-12), 4467-4479. View this article in WRRO
- In situ alloying of elemental Al-Cu12 feedstock using selective laser melting. Virtual and Physical Prototyping, 14(3), 242-252. View this article in WRRO
- A microstructure sensitive model for deformation of Ti-6Al-4V describing Cast-and-Wrought and Additive Manufacturing morphologies. Materials and Design, 160, 350-362. View this article in WRRO
- Processing Parameter Effects on Residual Stress and Mechanical Properties of Selective Laser Melted Ti6Al4V
. Journal of Materials Engineering and Performance, 27(8), 4059-4068. View this article in WRRO
- Investigating the melt pool properties and thermal effects of multi-laser diode area melting. International Journal of Advanced Manufacturing Technology, 97(1-4), 1383-1396. View this article in WRRO
- Residual stress development in selective laser-melted Ti6Al4V: a parametric thermal modelling approach. International Journal of Advanced Manufacturing Technology, 97(5-8), 2621-2633. View this article in WRRO
- Effect of scanning strategies on residual stress and mechanical properties of Selective Laser Melted Ti6Al4V. Materials Science and Engineering: A, 712, 175-187. View this article in WRRO
- Diode area melting single-layer parametric analysis of 316L stainless steel powder
. The International Journal of Advanced Manufacturing Technology, 94, 2563-2576. View this article in WRRO
- Customised Alloy Blends for In-Situ Al339 Alloy Formation Using Anchorless Selective Laser Melting. Technologies, 5(2). View this article in WRRO
- In-situ residual stress reduction, martensitic decomposition and mechanical properties enhancement through high temperature powder bed pre-heating of Selective Laser Melted Ti6Al4V. Materials Science and Engineering: A, 695, 211-220. View this article in WRRO
- Laser diode area melting for high speed additive manufacturing of metallic components. Materials and Design, 117, 305-315.
- In-Built Customised Mechanical Failure of 316L Components Fabricated Using Selective Laser Melting. Technologies, 5(1). View this article in WRRO
- Investigation into the material properties of wooden composite structures with in-situ fibre reinforcement using additive manufacturing. Composites Science and Technology, 138, 32-39. View this article in WRRO
- Two-dimensional simulation of grain structure growth within selective laser melted AA-2024. Materials and Design, 113, 369-376. View this article in WRRO
- AlSi12 In-Situ Alloy Formation and Residual Stress Reduction using Anchorless Selective Laser Melting. Additive Manufacturing, 7, 12-19. View this article in WRRO
- Investigating a semi-solid processing technique using metal powder bed Additive Manufacturing processes. 24th International SFF Symposium - An Additive Manufacturing Conference, SFF 2013, 454-462.
- Selective Laser Melting of thin wall parts using pulse shaping. J MATER PROCESS TECH, 210(2), 279-287.
- Selective laser melting of Inconel 625 using pulse shaping. Rapid Prototyping Journal, 16(4), 248-257.
- Top surface and side roughness
of Inconel 625 parts processed using
selective laser melting. Rapid Prototyping Journal, 15(2), 96-103.
- High density selective laser melting of Waspaloy (R). J MATER PROCESS TECH, 195(1-3), 77-87.
- Laser melting functionally graded composition of Waspaloy((R)) and Zirconia powders. J MATER SCI, 42(18), 7647-7656.
- Thermal expansion coefficients in Invar processed by selective laser melting. Journal of Materials Science. View this article in WRRO
- Reduction of micro-cracking in nickel superalloys processed by Selective Laser Melting: A fundamental alloy design approach. Acta Materialia, 94, 59-68. View this article in WRRO
Conference proceedings papers
- Multi-laser powder bed fusion of Cu10Sn using low-power 450nm diode lasers. Proceedings of the 35th Annual International Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference (pp 1302-1317). Austin, Texas, USA, 11 August 2024 - 11 August 2024. View this article in WRRO
- Parametric investigation of single-layer stainless steel 316L with novel laser powder bed fusion technology: diode area melting with 450 nm blue lasers. Proceedings of the 35th Annual International Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference (pp 1329-1342). Austin, Texas, USA, 11 August 2024 - 11 August 2024. View this article in WRRO
- Multiple 450 nm diode laser processing of TI64 powder. Solid Freeform Fabrication 2023: Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium (pp 1265-1278). Austin, Texas, USA, 14 August 2023 - 14 August 2023. View this article in WRRO
- Investigating a Semi-Solid Processing technique using metal powder bed Additive Manufacturing Processes. Proceedings Solid Freeform Fabrication Symposium(24) (pp 454). Austin Texas, USA, 5 August 2013 - 7 August 2013.
- Benchmarking metal powder bed Additive Manufacturing processes (SLM and EBM) to build flat overhanging geometries without supports. Proceeding Solid Freeform Fabrication Symposium(22). Austin Texas, USA, 6 August 2012 - 8 August 2012.
- A Method to Eliminate Anchors/Supports from Directly Laser Melted Metal Powder Bed Processes. Proc. Solid Freeform Fabrication Symposium (pp 55-64). Austin Texas, USA, August 2011.
- Semisolid heat treatment processing window of Pb-40% Sn alloy for feedstock in the 3D printing thixo-forming process. Materials Today: Proceedings. Uttarakhand, India, 1 May 2021 - 1 May 2021. View this article in WRRO
- Simulating the microstructural evolution of a Selective Laser Melted AA-2024. Solid Freeform Fabrication 2016: Proceedings of the 27th Annual International (pp 257-267). Austin, Texas View this article in WRRO
- Selective Laser Melting of Inconel 625 using Pulse Shaping. Proc. Solid Freeform Fabrication Symposium (pp 165-178). Austin Texas, USA, August 2011.
- High Density Selective Laser Melting of Waspaloy. Proc. Solid Freeform Fabrication Symposium (pp 220-232). Austin Texas, USA, August 2011.
- Benchmarking capabilities of SLM and EBM to build overhangs without supports
Patents
- Method, apparatus, computer readable storage medium and computer program for forming an object. US 2011/0042031 A1 (US). Appl. 24 Feb 2011.
Website content
- Emerald | Rapid Prototyping Journal | Selective laser melting of Inconel 625 using pulse shaping.
- Diode area melting of SS316L using low power 450 nm lasers. The International Journal of Advanced Manufacturing Technology. View this article in WRRO
- Teaching activities
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- MEC454 – Additive Manufacturing – Principles and Applications
- MEC333 – Integrated Design Skills
- PhD projects and students
Current PhD Students & Research Projects
- Miss Chunli Wu – Robocasting of ceramic dental implants
- Mr Mehmet Karaman – Multi-material laser powder bed fusion
- Mr Aria Izadi – Thermal gradient control during laser powder bed fusion of tungsten
- Mr Edward Rawson – Use of machine learning for training generative adversarial networks to model diode area melting
- Mr Can Erman – Diode area melting of 316L
- Mr Fathi Alhussadi – Modelling machining conditions of additively manufactured Ti64 components
- Mr Abdul Haque – Thermal management strategies in laser powder bed fusion
- Mr Zaher Alshehri – Multi-laser processing of TiAl
- Mr Zakki Emzam – Multi-material binder jetting of 316L and Cu
- Mr Mustafa Yesilyurt – Laser powder bed fusion of crack-susceptible alloys
Past Projects and Graduated PhD Students- Dr Alkim Aydin (2025) - The use of laser heating for microstructural customisation of Ti6Al4V processed using Diode Point Melting
- Dr Sarath Veetal (2024) - Diode area melting of Ti6Al4V: probing the multi-laser interaction, residual stress evolution, and spattering dynamics
- Dr Halil Caglar (2024) – Hybrid multi-laser powder bed fusion
- Dr Hussam Abunar (2024) - Multi-material metal powder bed binder jetting using PVA binder
- Dr Kubra Genc (2023) - Processing of NdFeB for electric motor applications using selective laser melting
- Dr Busra Karas (2023) - Additive manufacturing of carbon fibre-reinforced polymer composites
- Dr Abdullah Alharbi (2023) – Layered extrusion of metallic alloys
- Dr Sourabh Paul (2022) - Binder jetting of aqueous polyvinyl alcohol for additive manufacturing of Inconel 718
- Dr Mohammed Alsaddah (2022) – Diode area melting of Ti64
- Dr Vimanyu Beedasy (2021) - Investigation into the effects of pulsed laser sintering on inkjet-printed functional materials for printed electronics
- Dr Haider Ali (2020) - Evolution of Residual stress in Ti6Al4V components fabricated using selective laser melting
- Dr Marco Galindo (2019) - Microstructural sensitive model for plastic deformation of Ti-6Al-4V
- Dr Omar Lopez (2019) - Simulation of microstructural evolution of selective laser melted AA-2024
- Dr Miguel Arrendondo (2019) - Diode area melting use of diode Lasers in additive manufacturing of metallic components
- Dr Rafael Martinez (2018) - In situ alloying of elemental Al-Cu12 feedstock using selective laser melting
- Dr Neil Harrison (2015) - Reduction of micro-cracking in nickel superalloys processed by selective laser melting: A fundamental alloy design approach
- Mr Pratik Vora (2013) - AlSi12 In-situ alloy formation and residual stress reduction using anchorless selective laser melting