scholarly journals Analysis of Advanced Pore Morphology (APM) Foam Elements Using Compressive Testing and Time-Lapse Computed Microtomography

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5897
Author(s):  
Matej Borovinsek ◽  
Petr Koudelka ◽  
Jan Sleichrt ◽  
Michal Vopalensky ◽  
Ivana Kumpova ◽  
...  
Keyword(s):  
Internal Structure ◽  
Mechanical Response ◽  
Deformation Behaviour ◽  
Compressive Loading ◽  
Time Lapse ◽  
Pore Morphology ◽  
Time Resolved ◽  
Computed Microtomography ◽  
X Ray Computed ◽  
Internal Deformation

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 structure and its changes during compression are related to its mechanical response, in-situ time-resolved X-ray computed microtomography experiments were performed, where the APM foam elements were 3D scanned during a loading procedure. Simultaneously applying mechanical loading and radiographical imaging enabled new insights into the deformation behaviour of the APM foam samples when the mechanical response was correlated with the internal deformation of the samples. It was found that the highest stiffness of the APM elements is reached before the appearance of the first shear band. After this point, the stiffness of the APM element reduces up to the point of the first self-contact between the internal pore walls, increasing the sample stiffness towards the densification region.

scholarly journals Fast 4D On-the-Fly Tomography for Observation of Advanced Pore Morphology (APM) Foam Elements Subjected to Compressive Loading

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7256
Author(s):  
Michal Vopalensky ◽  
Petr Koudelka ◽  
Jan Sleichrt ◽  
Ivana Kumpova ◽  
Matej Borovinsek ◽  
...  
Keyword(s):  
Dynamic Testing ◽  
Mechanical Test ◽  
Compressive Loading ◽  
Time Lapse ◽  
3D Models ◽  
Pore Morphology ◽  
X Ray ◽  
Maximum Parameters ◽  
3D Information

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 interest and its changes during the experiment. However, the acquisition of the tomographic projections is, in general, a time-consuming task. The standard method for such experiments is the time-lapse CT, where the loading is suspended for the CT scan. On the other hand, modern X-ray tubes and detectors allow for shorter exposure times with an acceptable image quality. Consequently, the experiment can be designed in a way so that the mechanical test is running continuously, as well as the rotational platform, and the radiographic projections are taken one after another in a fast, free-running mode. Performing this so-called on-the-fly CT, the time for the experiment can be reduced substantially, compared to the time-lapse CT. In this paper, the advanced pore morphology (APM) foam elements were used as the test objects for in-situ X-ray microtomography experiments, during which series of CT scans were acquired, each with the duration of 12 s. The contrast-to-noise ratio and the full-width-half-maximum parameters are used for the quality assessment of the resultant 3D models. A comparison to the 3D models obtained by time-lapse CT is provided.

scholarly journals Internal structure of type I deep-sea spherules by X-ray computed microtomography

2005 ◽  
Vol 40 (2) ◽  
pp. 195-206 ◽  
Author(s):  
H. Feng ◽  
K. W. Jones ◽  
S. Tomov ◽  
B. Stewart ◽  
G. F. Herzog ◽  
...  
Keyword(s):  
Internal Structure ◽  
Deep Sea ◽  
Type I ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

Determination of reservoir rock residual water using X-ray computed microtomography

2018 ◽  
pp. 38-42 ◽  
Author(s):  
I.V. Yazynina ◽  
◽  
E.V. Shelyago ◽  
A.A. Abrosimov ◽  
N.E. Grachev ◽  
...  
Keyword(s):  
Reservoir Rock ◽  
Residual Water ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

Acoustic emission and X-ray computed microtomography characterization of damage accumulation in a woven Cf/SiC composite

2019 ◽  
Vol 155 ◽  
pp. 109748
Author(s):  
Yudong Xue ◽  
Qinglei Wang ◽  
Jianbao Hu ◽  
Haijun Zhou ◽  
Qingliang Shan ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Damage Accumulation ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

scholarly journals Hyperpolarised xenon MRI and time-resolved X-ray computed tomography studies of structure-transport relationships in hierarchical porous media

2021 ◽  
Vol 405 ◽  
pp. 126750
Author(s):  
Fraser Hill-Casey ◽  
Thomas Hotchkiss ◽  
Katharine A. Hardstone ◽  
Iain Hitchcock ◽  
Vladimir Novak ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Porous Media ◽  
Time Resolved ◽  
X Ray ◽  
Hierarchical Porous ◽  
X Ray Computed ◽  
Hierarchical Porous Media

scholarly journals Author Correction: A quantitative analysis of 3D-cell distribution in regenerative muscle-skeletal system with synchrotron X-ray computed microtomography

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Markéta Tesařová ◽  
Lucia Mancini ◽  
Andras Simon ◽  
Igor Adameyko ◽  
Markéta Kaucká ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Cell Distribution ◽  
Skeletal System ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

X-ray computed microtomography for the structural analysis of jewelry from the Museum “Royal Tombs of Sipán”

2020 ◽  
Vol 35 (S1) ◽  
pp. S38-S42
Author(s):  
Soraia Rodrigues de Azeredo ◽  
Roberto Cesareo ◽  
Angel Guillermo Bustamante Dominguez ◽  
Ricardo Tadeu Lopes
Keyword(s):  
Structural Analysis ◽  
High Resolution ◽  
Copper Alloys ◽  
North Coast ◽  
Flat Panel ◽  
X Ray ◽  
The North ◽  
Gold Silver ◽  
Computed Microtomography ◽  
X Ray Computed

Precious ornaments from the Museum Royal Tombs of Sipán were analyzed by X-ray computed microtomography (microCT). The ornaments analyzed were golden earrings produced by the Moche culture that flourished along the north coast of present-day Peru between approximately 100 and 600 AD. Sipán, also known as Huava Rajada, is a mochica archaeological complex in the north of Peru. In particular, the spectacular jewelry, mainly composed of gold, silver, and copper alloys, gilded copper, and tumbaga, from the Museum “Royal Tombs of Sipán,” in Lambayeque, north of Peru, are some of the most sophisticated metalworking ever produced of pre-Columbian America. A portable microCT system consisting of a high-resolution flat panel detector and a mini X-ray tube were used for the structural analysis of these ornaments. The microCT images show parts of the internal structure, highlighting the manufacturing technique and gold sheets joining techniques of the Moche artisans. Furthermore, the advantage of using the portable microCT system for nondestructive testing is clear when the sample cannot be taken to the laboratory.

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