Open Hopkinson Bar as a Method for Impact Testing of Additively Manufactured Cellular Metamaterials

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F22%3A00364601" target="_blank" >RIV/68407700:21260/22:00364601 - isvavai.cz</a>
Result on the web
<a href="https://www.dymat.org/media/dymat-tm26.pdf" target="_blank" >https://www.dymat.org/media/dymat-tm26.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Open Hopkinson Bar as a Method for Impact Testing of Additively Manufactured Cellular Metamaterials
Original language description
Open Hopkinson Pressure Bar (OHPB) appa- ratus is used, together with conventional split Hopkinson pressure bar (SHPB), for dynamic testing of additively manufactured cellular me- tamaterials at intermediate and high strain rates. Benefits of the OHPB testing method over standard established methods are dis- cussed. The investigated metamaterials in- clude various types of auxetic lattices manu- factured from powdered austenitic steel by powder bed fusion technology. It is found out that the investigated type of metamate- rials exhibits significant strain rate sensitivity of the stress-strain curves as well as of the apparent auxeticity. Moreover, its deforma- tion mechanism changes with the increasing impact velocity as the buckling of the individ- ual struts is reduced by the inertia effects.
Czech name
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Czech description
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Project
<a href="/en/project/GM22-18033M" target="_blank" >GM22-18033M: High velocity impact dynamics with fast and flash X-ray radiography</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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