Daniel Kytýř
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View article: Transmission energy dispersive X-ray diffraction as a tool for the laboratory study of fast processes in metals
Transmission energy dispersive X-ray diffraction as a tool for the laboratory study of fast processes in metals Open
In this work, an in-situ study of phase transitions in low-carbon steel is presented. The phase changes were monitored by the transmission energy dispersive X-ray diffraction technique during the heating, annealing and quenching cycle of t…
View article: Eigenmode Identification of Oscillating Cantilever Using Standard X-Ray Computed Tomography
Eigenmode Identification of Oscillating Cantilever Using Standard X-Ray Computed Tomography Open
X-ray computed tomography with laboratory imaging chains often struggles with high-speed processes, as recording a single tomographic dataset quickly enough is often a challenging task. This paper presents a method for extracting the eigen…
View article: Conductive Open‐Cell Silicone Foam for Tunable Damping and Impact Sensing Application
Conductive Open‐Cell Silicone Foam for Tunable Damping and Impact Sensing Application Open
Nature has long served as a source of inspiration for the development of new materials, with foam‐like structures in citrus fruits such as oranges and pomelos serving as examples of efficient energy dissipation. Inspired by the internal st…
View article: DETERMINATION OF FOUR CHARACTERISTIC REGIONS IN THE STRESS–STRAIN RESPONSE OF APM FOAM UNDER COMPRESSION USING DVC
DETERMINATION OF FOUR CHARACTERISTIC REGIONS IN THE STRESS–STRAIN RESPONSE OF APM FOAM UNDER COMPRESSION USING DVC Open
The Advanced Pore Morphology (APM) foam element is a recently developed cellular material composed of spherical metallic elements with favourable mechanical properties. Owing to their ability to sustain large deformations under compression…
View article: Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling
Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling Open
We studied compression of tetrachiral auxetic lattice manufactured using laser powder bed fusion from an aluminum alloy. Using an in-house loading device integrated with an X-ray CT scanner, experiments, including in-situ loading with time…
View article: Split Hopkinson bar and flash X-ray characterization of ultra high performance concrete reinforced by steel fibers subjected to dynamic compression
Split Hopkinson bar and flash X-ray characterization of ultra high performance concrete reinforced by steel fibers subjected to dynamic compression Open
Excellent mechanical properties of ultra high performance concrete make it suitable for use in special applications, where the material is subjected to dynamic phenomena such as impacts, explosions, or earthquakes. This paper presents a no…
View article: Design of the testing procedure for investigation of Eryx conicus dermal armour characteristics
Design of the testing procedure for investigation of Eryx conicus dermal armour characteristics Open
The aim of this work is to develop an experimental method suitable for the mechanical testing of highly non-standard biological samples such as snake skin with osteoderms. The objective of the method is to determine, whether the osteoderms…
View article: Damage Localisation in Fresh Cement Mortar Observed via In Situ (Timelapse) X-ray uCT imaging.
Damage Localisation in Fresh Cement Mortar Observed via In Situ (Timelapse) X-ray uCT imaging. Open
This is dataset to paper: Damage Localisation in Fresh Cement Mortar Observed via In Situ (Timelapse) X-ray uCT imaging.
View article: Effect of the long-term storage methods on the stability of cartilage biomechanical parameters
Effect of the long-term storage methods on the stability of cartilage biomechanical parameters Open
Long-term stability of the tissue product in terms of mechanical parameters is a key factor for its expiration date. For the investigation of storage effects on the cartilage tissues the experimental mechanical loading test combined with X…
View article: Computed tomography system with strict real-time synchronization for in-situ 3D analysis of periodically vibrating objects
Computed tomography system with strict real-time synchronization for in-situ 3D analysis of periodically vibrating objects Open
In the contribution, we present a laboratory system capable of X-ray computed tomography (XCT) scanning of an periodically moving or oscillating object. The system is an in-house developed XCT setup with electromagnetic voice coil actuator…
View article: Effect of aging on mechanical properties of 3D printed samples using stereolitography
Effect of aging on mechanical properties of 3D printed samples using stereolitography Open
This paper focuses on stereolithography (an additive manufacturing technology working on the principle of curing liquid resins layer by layer using ultraviolet radiation) and the effect of aging on the mechanical properties of the material…
View article: Stereolithography for manufacturing of advanced porous solids
Stereolithography for manufacturing of advanced porous solids Open
The aim of this paper is focused on benefits of stereolithography (SLA) technology for the fabrication of the lightweight lattice structures with potential for load-bearing function and high absorption of impact energy. SLA is an additive …
View article: A study on the vertebral column of the dice snake <i>Natrix tessellata</i> (<scp>Serpentes</scp>, <scp>Natricidae</scp>) from <scp>Denizli</scp> (western <scp>Anatolia</scp>, <scp>Turkey</scp>)
A study on the vertebral column of the dice snake <i>Natrix tessellata</i> (<span>Serpentes</span>, <span>Natricidae</span>) from <span>Denizli</span> (western <span>Anatolia</span>, <span>Turkey</span>) Open
The vertebral anatomy of snakes has attracted the attention of researchers for decades and numerous studies have been made for extinct and extant species. The present study investigated the morphological variations in vertebral structure a…
View article: Compression behaviour of TPMS-filled stainless steel tubes
Compression behaviour of TPMS-filled stainless steel tubes Open
One of the most promising options for future crashworthiness applications is thin-walled tubes filled with various cellular materials (e.g. metal foam). Of higher interest are the shell-based lattices, which have lately gained popularity d…
View article: Study of fracture processes in sandstone subjected to four-point bending by means of 4D X-ray computed micro-tomography
Study of fracture processes in sandstone subjected to four-point bending by means of 4D X-ray computed micro-tomography Open
High-resolution X-ray computed micro-tomography (CT) is a powerful technique for studying the processes of crack propagation in non-homogenous quasi-brittle materials such as rocks. To obtain all the significant information about the defor…
View article: VERTEX – versatile in-situ testing rig for X-ray scanners
VERTEX – versatile in-situ testing rig for X-ray scanners Open
In this contribution, we introduce a next-generation in-situ loading stage VERTEX (VERsatile in-situ TEsting rig for X-ray scanners) allowing for both high load capacity and high resolution tomographical imaging in a broad range of experim…
View article: Fast 4D On-the-Fly Tomography for Observation of Advanced Pore Morphology (APM) Foam Elements Subjected to Compressive Loading
Fast 4D On-the-Fly Tomography for Observation of Advanced Pore Morphology (APM) Foam Elements Subjected to Compressive Loading Open
Observation of dynamic testing by means of X-ray computed tomography (CT) and in-situ loading devices has proven its importance in material analysis already, yielding detailed 3D information on the internal structure of the object of inter…
View article: Analysis of Advanced Pore Morphology (APM) Foam Elements Using Compressive Testing and Time-Lapse Computed Microtomography
Analysis of Advanced Pore Morphology (APM) Foam Elements Using Compressive Testing and Time-Lapse Computed Microtomography Open
Advanced pore morphology (APM) foam elements are almost spherical foam elements with a solid outer shell and a porous internal structure mainly used in applications with compressive loading. To determine how the deformation of the internal…
View article: A Method for Evaluation the Fatigue Microcrack Propagation in Human Cortical Bone Using Differential X-ray Computed Tomography
A Method for Evaluation the Fatigue Microcrack Propagation in Human Cortical Bone Using Differential X-ray Computed Tomography Open
Fatigue initiation and the propagation of microcracks in a cortical bone is an initial phase of damage development that may ultimately lead to the formation of macroscopic fractures and failure of the bone. In this work, a time-resolved hi…
View article: Phase-contrast and dark-field imaging for the inspection of resin-rich areas and fiber orientation in non-crimp vacuum infusion carbon-fiber-reinforced polymers
Phase-contrast and dark-field imaging for the inspection of resin-rich areas and fiber orientation in non-crimp vacuum infusion carbon-fiber-reinforced polymers Open
In this work, we present a multimodal approach to three-dimensionally quantify and visualize fiber orientation and resin-rich areas in carbon-fiber-reinforced polymers manufactured by vacuum infusion. Three complementary image modalities w…
View article: Local fracture toughness testing of sandstone based on X-ray tomographic reconstruction
Local fracture toughness testing of sandstone based on X-ray tomographic reconstruction Open
It is well known that the measured values of the fracture toughness of rocks are influenced by material heterogeneity, dimensions, boundary conditions, and asymmetric mechanical behavior. Consequently, the results obtained by standard test…