IEAP - Institute of Experimental and Applied Physics

Partial tasks > Radiation Imaging in Material Science

Radiation Imaging in Material Science

Method “X Ray Dynamic Defectoscopy (XRDD)” uses Medipix device for the observation of time evolution of damage processes in a loaded specimen body. Even though the specimen is loaded monotonously and slowly, damaging can proceed discontinuously and relatively fast. Therefore high frame rate acquisition of X-ray images is crucial for real dynamic (time dependent) defectoscopy.

The method enables the observation of material density variations with micrometric accuracy. The test sample is illuminated by X rays during the loading process. Measured changes in transmission represent effective alterations in the sample thicknesses which are understood as weakening of the material due to damage volume fraction.

Sensitivity of the XRDD method depends on the ratio between incident and transmitted X ray beam intensity and on the fraction of scattered photons, the efficiency of the Medipix2 device at the X-ray energy used and the spectra of the X-ray tube.

Responsible person

Vavřík Daniel

IEAP

Co-workers

Jakůbek Martin	IEAP
Dammer Jiří	IEAP
Jakůbek Jan	IEAP
Jandejsek Ivan	IEAP

Grants:

Number	Name	Agency
LC06041	Research center "Fabrication, modification and characterization of materials by energetic radiation"	MŠMT
106/04/0567	Study of damage zone in high ductile materials in vicinity of crack tip by X-Ray Dynamic Defectoscopy method	GAČR
MSM 6840770040	Research Program 40: Usage of radionuclides and ionizing radiation.	MŠMT

Articles in Impacted Journals
(21)

Articles in Conference Proceedings
(17)

Thesis
(0)

Other publications
(3)

All
(41)

Text format

Name	Author	Scientific journal	Year
Application of High-resolution X-Ray Radiography for Monitoring the Penetration Depth of Consolidants in Natural Building Stones	Krejčí F.; Jakůbek J.; Slavíková M.; Kotlík P.	Engineering Mechanics Conference proceedings, Svratka, Czech Rep., Paper #312, pp. 733–739	2012
Energy Sensitive X-Ray Imaging with Pixel Stack Detector	Žemlička J.; Jakůbek J.; Soukup P.	Engineering Mechanics Conference proceedings, Svratka, Czech Rep., Paper #310, pp. 721–727	2012
Material Analysis Using Characteristic Transmission Spectra	Vavřík D.; Jakůbek J.	IEEE NSS/MIC Conf. Proc. (2008), N30-320	2008
Method of Interpolated Ellipses Based on Image Correlation Technique	Vavřík D.; Jandejsek I.	Engineering Mechanics 2008, ISBN 978-80-87012-11-6, pp. 252-253	2008
Micro-Radiographic Measurement of Material Damage Evolution	Vavřík D.; Jakůbek J.	Conf. Proc. of New Methods of Damage and Failure Analysis of Structural Parts, ISBN 978-80-248-813-9, p. 331-337	2008
Microradiographic Observation of the Strain Field in Vicinity of the Crack Tip	Vavřík D.; Jakůbek J.; Holý T.	17th European Conference on Fracture, ISBN 978-80-214-3692-3, pp. 76-83	2008
Microadiographic Measurement of Moving Material Structures	Vavřík D.; Holý T.; Jakůbek J.; Jakůbek M.	Proceedings of International Symposium on Technology for Next Generation Vehicle & Machine (2007)	2007
Microradiographic Observation of Grainy Structure of Al Alloy	Vavřík D.; Holý T.; Jakůbek J.; Jakůbek M.; Valach J.	IEEE NSS Conf. Proc. (2007) N24-432	2007
Radiography of Chaotically Moving Objects	Vavřík D.; Dammer J.; Holý T.; Jakůbek J.; Jakůbek M.; Jandejsek I.	AIP Vol. 958 (2007) 139-142	2007
3D Measurement of the Strain Field Surrounding Crack Tip	Vavřík D.; Bryscejn J.; Jakůbek J.; Valach J.	European Conference of Fracture, p. 323-328. ISBN 1-4020-4971-4	2006
Microradiographic Observation of Material Damage Structure	Vavřík D.; Holý T.; Jakůbek J.; Jakůbek M.; Vykydal Z.	2006 IEEE Nuclear Science Symposium Conference Record, Pages: 1081-1083, doi: 10.1109/NSSMIC.2006.356034	2006
Optical measurement of surface displacements in the vicinity of crack tip	Valach O.; Vavřík D.; Bryscejn J.; Jakůbek J.	Proc. of Engineering Mechanics 2006, p. 400-401. ISBN 80-86246-27-2	2006
Radiographic Observation of Damage Zone Evolution in High Ductile Specimen	Vavřík D.; Holý T.; Jakůbek J.; Jakůbek M.; Bryscejn J.; Tichy V.; Vykydal Z.; Valach J.	European Conference of Fracture, Pages: 323-328, ISBN 1-4020-4971-4	2006
X-ray Micro Radiography Using Beam Hardening Correction	Vavřík D.; Holý T.; Jakůbek J.; Pospíšil S.; Vykydal Z.; Dammer J.	2005 IEEE Nuclear Science Symposium Conference Record, Pages: 2989-2992 , doi: 10.1109/NSSMIC.2005.1596959	2005
Crack Instability Analyzed by the Method of Interpolated Ellipses	Vavřík D.; Jakůbek J.; Zemánková J.	Proceedings, SEM X Costa Mesa, California USA	2004
Present status of X-ray dynamic defectoscopy	Vavřík D.; Jakůbek J.; Pospíšil S.; Visschers J.	IEEE NSS 2003 Conf. Proc.	2003