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
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	Karch J.; Bartl B.; Dudák J.; Žemlička J.; Krejčí F.	Micron (accepted)	2016
Visualization of delamination in composite materials utilizing advanced X-ray imaging techniques	Vavřík D.; Jakůbek J.; Jandejsek I.; Krejčí F.; Kumpová I.; Žemlička J.	Journal of Instrumentation 10 C04012	2015
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	Krejčí F.; Slavíková M.; Žemlička J.; Jakůbek J.; Kotlík P.	Journal of Instrumentation 9 C07014	2014
X-ray Radiography and Tomography for Monitoring the Penetration Depth of Consolidants in Opuka - the Building stone of Prague Monuments	Slavíková M.; Krejčí F.; Žemlička J.; Pech M.; Kotlík P.; Jakůbek J.	Journal of Cultural Heritage 13 (4), 357-364	2012
CT Artefact Reduction by Signal to Thickness Calibration Function Shaping	Vavřík D.	NIM A, Volume 633, Supplement 1, May 2011, Pages S152-S155	2011
Evaluation of strain field in microstructures using micro-CT and digital volume correlation	Jiroušek O.; Jandejsek I.; Vavřík D.	JINST 6 C01039 doi:10.1088/1748-0221/6/01/C01039	2011
Image processing for X-ray transmission radiography with 3D voxel detector	Jandejsek I.; Soukup P.; Jakůbek J.	JINST 6 C12061 doi:10.1088/1748-0221/6/12/C12061	2011
Metal Grain Structure Resolved with Table-top micro-Tomographic System	Vavřík D.; Soukup P.	JINST_007P_1011	2011
Neutron Analysis for Microvoids in an Adhesive Layer between High X-ray Attenuation Materials	Nguyen T.; Vavřík D.; Lehmann E.; Jeon I.	Appl. Phys. Express 4 (2011) 066401	2011
Real-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical load	Doktor T.; Jiroušek O.; Zlámal P.; Jandejsek I.	JINST 6 C11007 doi:10.1088/1748-0221/6/11/C11007	2011
Slow-neutron-induced charged-particle emission-channeling-measurements with Medipix detectors	Koester U.; Granja C.; Jakůbek J.; Uher J.; Vacík J.	Nucl. Instr. Methods A 633 (2011) S267-S269	2011
X-ray color imaging with 3D sensitive voxel detector	Soukup P.; Jakůbek J.; Jandejsek I.; Žemlička J.	JINST 6 C12014 doi:10.1088/1748-0221/6/12/C12014	2011
X-ray dynamic defectoscopy utilizing digital image correlation	Jandejsek I.; Nachtrab F.; Uhlmann N.; Vavřík D.	NIM A, Volume 633, Supplement 1, May 2011, Pages S185-S18	2011
Radiogram enhancement and linearization using the beam hardening correction method	Vavřík D.; Jakůbek J.	NIM A, Vol. 607, Issue 1, p. 212-214	2009
Micrometric scale measurement of material structure moving utilizing μ-radiographic technique	Vavřík D.; Jakůbek J.; Holý T.	NIM A, Vol. 591, Issue 1, p. 24-27	2008
Phase contrast enhanced high resolution X-ray imaging and tomography of soft tissue	Jakůbek J.; Granja C.; Dammer J.; Tykva R.; Hanus R.; Uher J.; Vykydal Z.	Nucl. Instr. and Meth. A, Volume: 571, Issue: 1-2, Pages: 69-72, doi: 10.1016/j.nima.2006.10.031	2007
Experimental system for high resolution X-ray transmission radiography	Jakůbek J.; Vavřík D.; Holý T.; Jakůbek M.; Vykydal Z.	Nucl. Instr. and Meth. A, Volume: 563, Issue 1, Pages: 278-281, doi: 10.1016/j.nima.2006.01.033	2006
Quality of X-ray transmission radiography based on single photon counting pixel device	Jakůbek J.; Vavřík D.; Pospíšil S.; Uher J.	NIM A Vol. 546, pages 113-117	2005
Tomography for XRDD	Jakůbek J.; Holý T.; Pospíšil S.; Vavřík D.	NIM A Vol. 531, pages 307-313	2004
Resolution and stability tests of a Medipix-1 pixel detector for X-ray dynamic defectoscopy	Jakůbek J.; Pospíšil S.; Vavřík D.; Visschers J.	NIM A Vol. 509, pages 294-301	2003