Experimental research of energy absorbing structures within helmet samples made with the additive manufacturing method – preliminary study

• Autorzy: Tobola Wojciech , Papis Mateusz , Jastrzębski Dominik , Perz Rafał

Identyfikatory

DOI

10.37190/ABB-02226-2023-03

• Języki publikacji: EN

Abstrakty

EN

This study aimed to develop an energy-absorbing structure for bicycle helmets to minimize head injuries caused by collisions. The research team explored three geometric structures produced through additive methods and compares their energy absorption properties with a standard bicycle helmet made of Expanded Polystyrene (EPS) foam. Methods: The study prepared samples of three geometric structures (a ball, a honeycomb and a conical shape) and a fragment of a bicycle helmet made of EPS foam with the same overall dimensions. Laboratory tests were conducted using a pneumatic hammer, piston compressor, anvil, triaxial accelerometer and data processing systems. Three crash tests were performed for each type of structure, and the anvil's maximum acceleration and stopping distance after the crash were analyzed. Results: The study found that the energy absorption properties of the Polylactic Acid (PLA) material printed with the incremental method were comparable or better than those of the EPS material used in helmets. The geometric structure of the energy-absorbing material played a crucial role in its effectiveness. The most promising results were obtained for the ball samples. Conclusions: The study concluded that further research on energy-absorbing structures made using the Fused Deposition Modeling (FDM) method could be useful in the production of bicycle helmets. The results show that the geometric structure of the energy-absorbing material is a crucial factor in its effectiveness. The findings suggest that the ballshaped structure made with PLA material printed using the incremental method could be a promising design for bicycle helmets to minimize head injuries caused by collisions.

Słowa kluczowe

EN

energy absorbing structures; bicycle helmets; additive manufacturing; destructive testing

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2023
• Tom: Vol. 25, no. 1
• Strony: 127--136
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., wykr.

Twórcy

autor

Tobola Wojciech

• Institute of Aeronautics and Applied Mechanics, Warsaw University of Technology, Warsaw, Poland.

autor

Papis Mateusz

• Institute of Aeronautics and Applied Mechanics, Warsaw University of Technology, Warsaw, Poland.

autor

Jastrzębski Dominik

• Institute of Aeronautics and Applied Mechanics, Warsaw University of Technology, Warsaw, Poland.

autor

Perz Rafał

• Institute of Aeronautics and Applied Mechanics, Warsaw University of Technology, Warsaw, Poland.

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).