Cellular Metal with Extreme cutting resistance

Dr Stefan Szyniszewski PhD PE education and research took him from Poland to Germany, Japan, USA and recently to the UK to Surrey and Durham Universities.

His interest in developing cellular and 3D woven materials produced new metals with outstanding parameters outperforming traditional characteristics of bulk materials such as steel. Embedding ceramic spheres in a cellular metal created a contrast between the high stiffness of ceramics and the flexibility of the lightweight cellular matrix.

Oscillations at the interface between ceramic spheres and the blade created ceramic powder. These abrasive particles applied localized forces, which coupled with vibrations, wore the blades and prevented the cutting process altogether. His new materials are of great interest to the industry with multiple applications yet to be discovered.

The talk will introduce a cellular structure made of aluminium and ceramics, which resembles micro-structures of sea creature shells and grapefruit peel.

The material is called Proteus because it modifies its internal structure under different loads. The talk will discuss the properties and applications of this newly developed material technology.

  • Research and Innovation

Continuing Professional Development

This event can contribute towards your Continuing Professional Development (CPD) hours as part of the IET's CPD monitoring scheme.


28 Jan 2022

2:00pm - 3:30pm

Add to Calendar 01/28/2022 14:00 01/28/2022 15:30 Cellular Metal with Extreme cutting resistance Research led to development into non-cuttable material created metallic-ceramic panels which defeats angle grinders, power drill, and water jet cutter in the tests performed at the Centre for Applied Science and Technology of the Home Office. Savoy Pl, London WC2R 0BL, UK


London Local Network

Registration Information

These lectures are preceded by an optional lunch where there is an opportunity to network with colleagues.  

If you wish to attend this lecture please book a place on the IET website.  

During the booking process you will have the opportunity to pre book a lunch at Savoy Place. 

The cost for a two course meal with wine is £19.31

It is ESSENTIAL to pre book lunch and pay for it on this website. 

Reservations for lunch can be made up to 11pm on the Monday prior to the event (subject to availability).  

Bookings for the lecture only can be made up to noon on the day prior to the event (subject to availability).  

No payment for the event lunch can be made at Savoy Place.  


  1. You don’t need to be a member to log into the system. 
  2. You can book for more than one person; you just need to add the other guest(s) name(s). 
  3. You can add any special dietary requirements during the booking process.   
  4. The website price quoted is exclusive of VAT.  VAT will be added when you pay.
  5. You will receive a confirmation of your booking & payment if made.   
  6. You can cancel your booking - the T&C’s are below.  You can do this by contacting events@theiet.org  

Terms & Condition’s.  

5+ days before event date - Full refund.

4 days before event date - No refund.  

Name substitutions are accepted at any time by fax or email, the IET reserves the right to charge a transfer fee.


Dr Stefan Szyniszewski, PhD PE

Dr Stefan Szyniszewski, PhD PE

Assistant Professor - Durham University

After graduating in Structural Engineering from the Warsaw University of Technology, Szyniszewski studied for an MSc in Simulation Techniques in Mechanical Engineering at RWTH-Aachen (Germany). Subsequently, he worked as a research engineer on rock-shed protective structures over highways in Kanazawa, Japan (2003-05). Szyniszewski then studied for a PhD at the University of Florida (2009), where he developed an energy flow approach to the progressive collapse of framed structures. He then spent two years in industry, working for Bechtel Power Corporation and Areva on the design of a new generation of nuclear power plants in the United States. Szyniszewski achieved a Professional Engineer (PE) status in California (2011). Stefan returned to academia as a post-doctoral research fellow at the Johns Hopkins University, where he studied cellular metals and 3D woven lattice materials (DARPA funded project). Stefan developed homogenized models of cellular structures and derived analytical formulas for the ultimate buckling capacity of sandwich panels with metallic foam core. Szyniszewski also developed models of framed structures under dynamic and extreme loads for the Applied Physics Lab (APL). Subsequently, Stefan returned to Europe and joined the University of Surrey as a lecturer in Material and Structures in 2012. Stefan was appointed as an Assistant Professor at Durham University in 2019.


Dr Szyniszewski is an author and co-author of numerous publications in scientific and professional journals. Selected articles are listed here:


1.         Szyniszewski, Stefan, Rene Vogel, Florian Bittner, Ewa Jakubczyk, Miranda Anderson, Manuel Pelacci, Ajoku Chinedu, Hans-Josef Endres, and Thomas Hipke. ‘Non-Cuttable Material Created through Local Resonance and Strain Rate Effects’. Scientific Reports 10, no. 1 (20 July 2020): 11539.

2.         Tavares, M., J. M. Weigand, L. C. M. Vieira, S. J. C. Almeida, and S. Szyniszewski. ‘Mechanical Behaviour of Steel and Aluminium Foams at Elevated Temperatures. Local Buckling Based Approach toward Understanding of the Material System Behaviour’. International Journal of Mechanical Sciences 181 (1 September 2020): 105754.

3.         Salari-Sharif, Ladan, Stephen M. Ryan, Manuel Pelacci, James K. Guest, Lorenzo Valdevit, and Stefan Szyniszewski. ‘Damping of Selectively Bonded 3D Woven Lattice Materials’. Scientific Reports 8, no. 1 (December 2018).

(This work was led by Dr Szyniszewski as PI and completed by research students under his direct supervision, in cooperation with a research group at the University of California at Irvine)

4.         Szyniszewski, S. T., B. H. Smith, J. F. Hajjar, B. W. Schafer, and S. R. Arwade. ‘The Mechanical Properties and Modeling of a Sintered Hollow Sphere Steel Foam’. Materials & Design 54 (February 2014): 1083–94.

Reasons to attend

To hear and learn about the latest technology developments in creating metals with unmatchable properties, inspired by multi-scale structures in Nature


IET London: Savoy Place

2 Savoy Place
United Kingdom

The London headquarters of the IET.

We are committed to having an environmentally responsible event portfolio and we are working hard to plan and implement events which reflect sustainable event best practices.

We are working with venues and suppliers that demonstrate best environmental practices, in particular achieving zero food waste, no single-use plastics, along with recycling and re-use of paper, metal, plastic and glass.

In order to reduce the carbon footprint of the event, we strongly encourage delegates to walk, cycle or use public transport to attend the event.

Further information about environmental sustainability and IET Events can be obtained by contacting rebecca.booth@theiet.org.


11:30/11:40 Arrival for optional lunch

It is essential to sign in at the Faraday reception desk which is on the second floor for IET building before entering the Faraday Centre.

12:00 to 13:45 – Optional lunch.

13:45 - Arrival for lecture

(It is essential to sign in separately for attendance at the lecture.  Note this is required for IET attendance records purposes and is different to the Faraday signing in procedure).

14:00 to 14:45/15:00 – the lecture starts promptly at 14:00

14:45/15:00 to 15:30 approximately – questions and discussion

15:30 Optional tea/coffee in the Faraday Centre.  Free for members.  Non-members can purchase tea/coffee at the Faraday counter.  Note before entering the Faraday Centre you must sign in at the reception desk.

Please sign out when leaving the Faraday Centre.




Free of charge

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