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)

Table format

J. Karch, B. Bartl, J. Dudák, J. Žemlička, F. Krejčí, "Non-destructive imaging of framents of historical beeswax seals using high-contrast X-ray micro-radiography and micro-tomography with large area photon-counting detector array", Micron (accepted) (2016)

D. Vavřík, J. Jakůbek, I. Jandejsek, F. Krejčí, I. Kumpová, J. Žemlička, "Visualization of delamination in composite materials utilizing advanced X-ray imaging techniques", Journal of Instrumentation 10 C04012 (2015)

F. Krejčí, M. Slavíková, J. Žemlička, J. Jakůbek, P. Kotlík, "High-contrast X-ray Radiography Using Hybrid Semiconductor Pixel Detectors with 1 mm thick Si sensor as a Tool for Monitoring Liquids in Natural Building", Journal of Instrumentation 9 C07014 (2014)

F. Krejčí, J. Jakůbek, M. Slavíková, P. Kotlík, "Application of High-resolution X-Ray Radiography for Monitoring the Penetration Depth of Consolidants in Natural Building Stones ", Engineering Mechanics Conference proceedings, Svratka, Czech Rep., Paper #312, pp. 733–739 (2012)

J. Žemlička, J. Jakůbek, P. Soukup, "Energy Sensitive X-Ray Imaging with Pixel Stack Detector", Engineering Mechanics Conference proceedings, Svratka, Czech Rep., Paper #310, pp. 721–727 (2012)

M. Slavíková, F. Krejčí, J. Žemlička, M. Pech, P. Kotlík, J. Jakůbek, "X-ray Radiography and Tomography for Monitoring the Penetration Depth of Consolidants in Opuka - the Building stone of Prague Monuments ", Journal of Cultural Heritage 13 (4), 357-364 (2012)

D. Vavřík, "CT Artefact Reduction by Signal to Thickness Calibration Function Shaping", NIM A, Volume 633, Supplement 1, May 2011, Pages S152-S155

O. Jiroušek, I. Jandejsek, D. Vavřík, "Evaluation of strain field in microstructures using micro-CT and digital volume correlation", JINST 6 C01039 doi:10.1088/1748-0221/6/01/C01039 (2011)

I. Jandejsek, P. Soukup, J. Jakůbek, "Image processing for X-ray transmission radiography with 3D voxel detector", JINST 6 C12061 doi:10.1088/1748-0221/6/12/C12061 (2011)

D. Vavřík, P. Soukup, "Metal Grain Structure Resolved with Table-top micro-Tomographic System", JINST_007P_1011 (2011)

T. Nguyen, D. Vavřík, E. Lehmann, I. Jeon, "Neutron Analysis for Microvoids in an Adhesive Layer between High X-ray Attenuation Materials", Appl. Phys. Express 4 (2011) 066401

T. Doktor, O. Jiroušek, P. Zlámal, I. Jandejsek, "Real-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical load", JINST 6 C11007 doi:10.1088/1748-0221/6/11/C11007 (2011)

U. Koester, C. Granja, J. Jakůbek, J. Uher, J. Vacík, "Slow-neutron-induced charged-particle emission-channeling-measurements with Medipix detectors", Nucl. Instr. Methods A 633 (2011) S267-S269

P. Soukup, J. Jakůbek, I. Jandejsek, J. Žemlička, "X-ray color imaging with 3D sensitive voxel detector", JINST 6 C12014 doi:10.1088/1748-0221/6/12/C12014 (2011)

I. Jandejsek, F. Nachtrab, N. Uhlmann, D. Vavřík, "X-ray dynamic defectoscopy utilizing digital image correlation", NIM A, Volume 633, Supplement 1, May 2011, Pages S185-S18

D. Vavřík, J. Jakůbek, "Radiogram enhancement and linearization using the beam hardening correction method", NIM A, Vol. 607, Issue 1, p. 212-214 (2009)

D. Vavřík, J. Jakůbek, "Material Analysis Using Characteristic Transmission Spectra", IEEE NSS/MIC Conf. Proc. (2008), N30-320

D. Vavřík, I. Jandejsek, "Method of Interpolated Ellipses Based on Image Correlation Technique", Engineering Mechanics 2008, ISBN 978-80-87012-11-6, pp. 252-253

D. Vavřík, J. Jakůbek, "Micro-Radiographic Measurement of Material Damage Evolution", Conf. Proc. of New Methods of Damage and Failure Analysis of Structural Parts, ISBN 978-80-248-813-9, p. 331-337 (2008)

D. Vavřík, J. Jakůbek, T. Holý, "Micrometric scale measurement of material structure moving utilizing μ-radiographic technique", NIM A, Vol. 591, Issue 1, p. 24-27 (2008)

D. Vavřík, J. Jakůbek, T. Holý, "Microradiographic Observation of the Strain Field in Vicinity of the Crack Tip", 17th European Conference on Fracture, ISBN 978-80-214-3692-3, pp. 76-83 (2008)

D. Vavřík, T. Holý, J. Jakůbek, M. Jakůbek, J. Valach, "Microradiographic measurement of copper distribution in duralumin sample", Československý Časopis pro Fyziku, 1/2008, 58-61

D. Vavřík, J. Jakůbek, M. Jakůbek, T. Holý, "Microradiography in material science", Československý Časopis pro Fyziku, 1/2008, 53-57

D. Vavřík, T. Holý, J. Jakůbek, M. Jakůbek, "Microadiographic Measurement of Moving Material Structures", Proceedings of International Symposium on Technology for Next Generation Vehicle & Machine (2007)

D. Vavřík, T. Holý, J. Jakůbek, M. Jakůbek, J. Valach, "Microradiographic Observation of Grainy Structure of Al Alloy", IEEE NSS Conf. Proc. (2007) N24-432

J. Jakůbek, C. Granja, J. Dammer, R. Tykva, R. Hanus, J. Uher, Z. Vykydal, "Phase contrast enhanced high resolution X-ray imaging and tomography of soft tissue", Nucl. Instr. and Meth. A, Volume: 571, Issue: 1-2, Pages: 69-72, doi: 10.1016/j.nima.2006.10.031 (2007)

D. Vavřík, J. Dammer, T. Holý, J. Jakůbek, M. Jakůbek, I. Jandejsek, "Radiography of Chaotically Moving Objects", AIP Vol. 958 (2007) 139-142

D. Vavřík, J. Bryscejn, J. Jakůbek, J. Valach, "3D Measurement of the Strain Field Surrounding Crack Tip", European Conference of Fracture, p. 323-328. ISBN 1-4020-4971-4 (2006)

J. Jakůbek, D. Vavřík, T. Holý, M. Jakůbek, Z. Vykydal, "Experimental system for high resolution X-ray transmission radiography", Nucl. Instr. and Meth. A, Volume: 563, Issue 1, Pages: 278-281, doi: 10.1016/j.nima.2006.01.033

D. Vavřík, T. Holý, J. Jakůbek, M. Jakůbek, Z. Vykydal, "Microradiographic Observation of Material Damage Structure", 2006 IEEE Nuclear Science Symposium Conference Record, Pages: 1081-1083, doi: 10.1109/NSSMIC.2006.356034

O. Valach, D. Vavřík, J. Bryscejn, J. Jakůbek, "Optical measurement of surface displacements in the vicinity of crack tip", Proc. of Engineering Mechanics 2006, p. 400-401. ISBN 80-86246-27-2

D. Vavřík, T. Holý, J. Jakůbek, M. Jakůbek, J. Bryscejn, V. Tichy, Z. Vykydal, J. Valach, "Radiographic Observation of Damage Zone Evolution in High Ductile Specimen", European Conference of Fracture, Pages: 323-328, ISBN 1-4020-4971-4 (2006)

J. Jakůbek, D. Vavřík, S. Pospíšil, J. Uher, "Quality of X-ray transmission radiography based on single photon counting pixel device", NIM A Vol. 546, pages 113-117 (2005)

D. Vavřík, T. Holý, J. Jakůbek, S. Pospíšil, Z. Vykydal, J. Dammer, "X-ray Micro Radiography Using Beam Hardening Correction", 2005 IEEE Nuclear Science Symposium Conference Record, Pages: 2989-2992 , doi: 10.1109/NSSMIC.2005.1596959

D. Vavřík, J. Jakůbek, J. Zemánková, "Crack Instability Analyzed by the Method of Interpolated Ellipses", Proceedings, SEM X Costa Mesa, California USA (2004)

D. Vavřík, J. Jakůbek, S. Pospíšil, J. Visschers, J. Zemánková, "Non-destructive Observation of Damage Processes in precracked specimens by X-Ray Dynamic Defectoscopy", Annals of the Marie Curie fellowships-Vol.3, pp. 69-75, ISBN 92 92 894 7233¬2 (2004)

J. Jakůbek, T. Holý, S. Pospíšil, D. Vavřík, "Tomography for XRDD", NIM A Vol. 531, pages 307-313 (2004)

D. Vavřík, J. Jakůbek, S. Pospíšil, J. Visschers, "Present status of X-ray dynamic defectoscopy", IEEE NSS 2003 Conf. Proc.

J. Jakůbek, S. Pospíšil, D. Vavřík, J. Visschers, "Resolution and stability tests of a Medipix-1 pixel detector for X-ray dynamic defectoscopy", NIM A Vol. 509, pages 294-301 (2003)