Geometric classification of open-cell metal foams using X-ray micro-computed tomography

Bock, Jessica; Jacobi, Anthony M.

doi:10.1016/j.matchar.2012.10.001

Cited by 63 publications

(22 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2, examples of the scan images are shown for the 5, 10, 20, and 40 PPI copper foams, respectively. The strut cross sections for the investigated foam samples are observed to be mostly triangular, as was also reported by Bock and Jacobi [27]. The demarcation between the solid phase and the fluid phase is not crisp: metal absorbs X-rays leading to brighter zones, whereas air let X-rays pass, leading to darker zones.…”

Section: Methodssupporting

confidence: 83%

Numerical investigation of pressure drop and heat transfer through reconstructed metal foams and comparison against experiments

Diani

Bodla

Rossetto

et al. 2015

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

Direct numerical simulation of transport in foam materials can benefit from realistic representations of the porous-medium geometry generated by employing non-destructive 3D imaging techniques. X-ray microtomography employs computer-processed X-rays to produce tomographic images or slices of specific regions of the object under investigation, and is ideally suited for imaging opaque and intricate porous media. In this work, we employ micro-CT for numerical analysis of air flow and convection through four different high-porosity copper foams. All four foam samples exhibit approximately the same relative density (6.4-6.6% solid volume fraction), but have different pore densities (5, 10, 20, and 40 pores per inch, PPI). A commercial micro-computed tomography scanner is employed for scanning the 3D microstructure of the foams at a resolution of 20 μm, yielding stacks of two-dimensional images. These images are processed in order to reconstruct and mesh the real, random structure of the foams, upon which simulations are conducted of forced convection through the pore spaces of the foam samples. The pressure drop values from this μCT based CFD analysis are compared against prior experimental results; the computational interfacial heat transfer results are compared against the values predicted by an empirical correlation previously reported, revealing excellent agreement between the numerical and experimental/empirical hydraulic and thermal results, thus highlighting the efficacy of this novel approach

show abstract

Section: Methodssupporting

confidence: 83%

Numerical investigation of pressure drop and heat transfer through reconstructed metal foams and comparison against experiments

Diani

Bodla

Rossetto

et al. 2015

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

show abstract

“…At the moment, a significant effort is devoted to describing the foam structure in a more realistic way: from this perspective, X-ray computed microtomography (μ-CT) appears a promising and appealing approach to be coupled to numerical simulations. The literature includes several works dealing with μ-CT, not only limited to metal foams or thermal conductivity estimations [1,3,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. The literature offers a wide set of analytical and empirical correlations for the estimation of the effective thermal conductivity of metal foams.…”

Section: Introductionmentioning

confidence: 99%

On the effective thermal conductivity of aluminum metal foams: Review and improvement of the available empirical and analytical models

Ranut

2016

Applied Thermal Engineering

139

View full text Add to dashboard Cite

“…Recent observations using X-ray μCT showed up the feasibility of the 3D reconstruction and basic measurements on X-ray tomography and prove that this technique is suitable for the investigation of the microstructure of foams, because it enables to obtain a real image of the inside [9], [10].…”

Section: Visualization Segmentation and Morphometrymentioning

confidence: 98%

Pores distribution statistical analysis for metal foams obtained by casting-dissolution process

Cardona

Isaza²,

Ramírez³

et al. 2016

Matéria (Rio J.)

View full text Add to dashboard Cite

Interesting properties of metal foams such as light weight, good energy absorption and low thermal conductivity, have promoted the development of new processes to improve properties without sacrificing productivity. This study aims to verify the uniformity pore distribution in an aluminum alloy foam obtained by Casting -Dissolution Process, using a nondestructive analysis. In order to evaluate mechanical properties of a metal foam using computational numerical models, the use of a small reconstructed section of the sample representing an entire volume of metal foam, was validated. In conclusion, it was possible to determine that all parts of the sample have the equivalent superficial area and volume.

show abstract

Geometric classification of open-cell metal foams using X-ray micro-computed tomography

Cited by 63 publications

References 36 publications

Numerical investigation of pressure drop and heat transfer through reconstructed metal foams and comparison against experiments

Numerical investigation of pressure drop and heat transfer through reconstructed metal foams and comparison against experiments

On the effective thermal conductivity of aluminum metal foams: Review and improvement of the available empirical and analytical models

Pores distribution statistical analysis for metal foams obtained by casting-dissolution process

Contact Info

Product

Resources

About