HIGH-SPEED X-RAY IMAGING FACILITIES FOR IMPACT DYNAMICS AT INTERMEDIATE AND HIGH STRAIN RATES

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F25%3A00387525" target="_blank" >RIV/68407700:21260/25:00387525 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.21495/em2025-1" target="_blank" >https://doi.org/10.21495/em2025-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21495/em2025-1" target="_blank" >10.21495/em2025-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

HIGH-SPEED X-RAY IMAGING FACILITIES FOR IMPACT DYNAMICS AT INTERMEDIATE AND HIGH STRAIN RATES

Popis výsledku v původním jazyce

This paper presents two advanced in-situ X-ray imaging facilities developed for studying material behavior under dynamic loading conditions at both intermediate and high strain rates. The first facility, optimized for intermediate strain rate testing using an apparatus based on linear motors, utilizes continuous axial X-ray radiography to capture internal material processes during impact testing, with frame rates ranging from 100 fps to 500 fps using a laboratory camera, and up to 2000 fps using a high-speed camera. The second facility, designed for high strain rate testing, integrates a flash X-ray system capable of capturing ultra-high-speed events with frame rates in the tens of thousands of frames per second. This imaging system is coupled with modular Split Hopkinson Bar (SHPB), Direct Impact Hopkinson Bar (DIHB), and Open Hopkinson Pressure Bar (OHPB) devices for dynamic material testing, enabling precise measurements of force, velocity, and displacement. The facilities have enabled successful visualization and analysis of complex deformation and failure mechanisms in various materials, providing significant insights into deformation response under dynamicconditions. Despite challenges related to resolution, frame rates, and contrast, these systems offer valuableinsights with the potential for further optimization and comparison with particle-accelerator based results.

Název v anglickém jazyce

HIGH-SPEED X-RAY IMAGING FACILITIES FOR IMPACT DYNAMICS AT INTERMEDIATE AND HIGH STRAIN RATES

Popis výsledku anglicky

This paper presents two advanced in-situ X-ray imaging facilities developed for studying material behavior under dynamic loading conditions at both intermediate and high strain rates. The first facility, optimized for intermediate strain rate testing using an apparatus based on linear motors, utilizes continuous axial X-ray radiography to capture internal material processes during impact testing, with frame rates ranging from 100 fps to 500 fps using a laboratory camera, and up to 2000 fps using a high-speed camera. The second facility, designed for high strain rate testing, integrates a flash X-ray system capable of capturing ultra-high-speed events with frame rates in the tens of thousands of frames per second. This imaging system is coupled with modular Split Hopkinson Bar (SHPB), Direct Impact Hopkinson Bar (DIHB), and Open Hopkinson Pressure Bar (OHPB) devices for dynamic material testing, enabling precise measurements of force, velocity, and displacement. The facilities have enabled successful visualization and analysis of complex deformation and failure mechanisms in various materials, providing significant insights into deformation response under dynamicconditions. Despite challenges related to resolution, frame rates, and contrast, these systems offer valuableinsights with the potential for further optimization and comparison with particle-accelerator based results.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GM22-18033M" target="_blank" >GM22-18033M: Dynamika rázů s využitím rychlé rentgenové radiografie a zábleskového rentgenového zdroje</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Engineering Mechanics 2025: Book of full texts

ISBN

978-80-86246-99-4

ISSN

1805-8248

e-ISSN

1805-8256

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

Institute of Thermomechanics, AS CR, v.v.i.

Místo vydání

Prague

Místo konání akce

Medlov

Datum konání akce

12. 5. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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