X-ray computed tomography of the periodically moving object

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00581843" target="_blank" >RIV/68378297:_____/24:00581843 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21670/24:00374810

Výsledek na webu

<a href="https://doi.org/10.1088/1748-0221/19/01/C01045" target="_blank" >https://doi.org/10.1088/1748-0221/19/01/C01045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/19/01/C01045" target="_blank" >10.1088/1748-0221/19/01/C01045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

X-ray computed tomography of the periodically moving object

Popis výsledku v původním jazyce

X-ray computed tomography is a standard method of non-destructive testing of a wide range of static objects. In recent years, time-dependent tomography has been on the rise, for which it is necessary to acquire a series of tomographic data covering the event of interest. For slower processes, conventional laboratory X-ray computed tomography (CT) scanners can be used, while when events are faster, a very intense X-ray source is usually required. For high resolution requirements, the need for an intense X-ray source leads to the use of a synchrotron. An exception is tomographic tracking of periodic events. As will be shown, for these, a good quality reconstruction can be achieved even in the case of a relatively low-intensity X ray source. To avoid blurring of the individual X-ray images by the motion of the object, the exposure time must be reasonably short. At motion rates of units of Hz, this time cannot be longer than tens of ms, this requirement naturally leads to low data statistics. Sufficient statistics is achieved by integrating images taken at an identical position of the moving object. A key requirement of such an approach is the precise synchronization of all active components of the system. The imaging detector must be capable of taking images on demand by hardware triggering with the capability of adequately nshort exposures. The ability of the CT system to investigate periodicallymoving objects will be demonstrated on the object oscillating harmonically at 3.81 Hz.

Název v anglickém jazyce

X-ray computed tomography of the periodically moving object

Popis výsledku anglicky

X-ray computed tomography is a standard method of non-destructive testing of a wide range of static objects. In recent years, time-dependent tomography has been on the rise, for which it is necessary to acquire a series of tomographic data covering the event of interest. For slower processes, conventional laboratory X-ray computed tomography (CT) scanners can be used, while when events are faster, a very intense X-ray source is usually required. For high resolution requirements, the need for an intense X-ray source leads to the use of a synchrotron. An exception is tomographic tracking of periodic events. As will be shown, for these, a good quality reconstruction can be achieved even in the case of a relatively low-intensity X ray source. To avoid blurring of the individual X-ray images by the motion of the object, the exposure time must be reasonably short. At motion rates of units of Hz, this time cannot be longer than tens of ms, this requirement naturally leads to low data statistics. Sufficient statistics is achieved by integrating images taken at an identical position of the moving object. A key requirement of such an approach is the precise synchronization of all active components of the system. The imaging detector must be capable of taking images on demand by hardware triggering with the capability of adequately nshort exposures. The ability of the CT system to investigate periodicallymoving objects will be demonstrated on the object oscillating harmonically at 3.81 Hz.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/GA22-13811S" target="_blank" >GA22-13811S: Inovativní defektoskopická metoda založená na tomografické analýze vlastních tvarů kmitání ve 3D</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Svazek periodika

19

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

C01045

Kód UT WoS článku

001168579300006

EID výsledku v databázi Scopus

2-s2.0-85183668358