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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

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

2025

Confidentiality

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

Article name in the collection

Engineering Mechanics 2025: Book of full texts

ISBN

978-80-86246-99-4

ISSN

1805-8248

e-ISSN

1805-8256

Number of pages

4

Pages from-to

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Publisher name

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

Place of publication

Prague

Event location

Medlov

Event date

May 12, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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