How reproducible are methods to measure the dynamic viscoelastic properties of poroelastic media?

Bonfiglio, Paolo; Pompoli, Francesco; Horoshenkov, Kirill V.; Rahim, Mahmud Iskandar B. Seth A.; Jaouen, Luc; Rodenas, Julia; Bécot, François‐Xavier; Gourdon, Emmanuel; Jaeger, Dirk; Kursch, Volker; Tarello, Maurizio; Roozen, N.B.; Glorieux, Christ; Ferrian, Fabrizio; Leroy, Pierre; Briatico‐Vangosa, Francesco; Nicolas, Dauchez; Foucart, Félix; Lei, Lei; Carillo, Kévin; Doutres, Olivier; Sgard, Franck; Panneton, Raymond; Verdière, Kévin; Bertolini, Clara; Bär, Rolf; Groby, Jean‐Philippe; Geslain, Alan; Poulain, Nicolas; Rouleau, Lucie; Guinault, Alain; Ahmadi, Hamid; Forge, Charlie

doi:10.1016/j.jsv.2018.05.006

Cited by 21 publications

(17 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The purpose of this work is to evaluate the impact of several additive manufacturing technologies on the sound absorption of 3D printed samples. Following well-established traditions in acoustic [23,24] and non-acoustic [25][26][27] testing of materials, this work is a round robin test, i.e. an inter-laboratory test, where the manufacturing of samples and their acoustical measurements are performed independently by various laboratories.…”

Section: Introductionmentioning

confidence: 99%

Reproducibility of sound-absorbing periodic porous materials using additive manufacturing technologies: Round robin study

Zieliński

Opiela

Pawłowski

et al. 2020

Additive Manufacturing

Self Cite

View full text Add to dashboard Cite

The purpose of this work is to check if additive manufacturing technologies are suitable for reproducing porous samples designed for sound absorption. The work is an inter-laboratory test, in which the production of samples and their acoustic measurements are carried out independently by different laboratories, sharing only the same geometry codes describing agreed periodic cellular designs. Different additive manufacturing technologies and equipment are used to make samples. Although most of the results obtained from measurements performed on samples with the same cellular design are very close, it is shown that some discrepancies are due to shape and surface imperfections, or microporosity, induced by the manufacturing process. The proposed periodic cellular designs can be easily reproduced and are suitable for further benchmarking of additive manufacturing techniques for rapid prototyping of acoustic materials and metamaterials.

show abstract

Section: Introductionmentioning

confidence: 99%

Reproducibility of sound-absorbing periodic porous materials using additive manufacturing technologies: Round robin study

Zieliński

Opiela

Pawłowski

et al. 2020

Additive Manufacturing

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, soft CFs were preloaded with a strain of 1–3% before the elastic modulus and loss factor were measured. The range of deformation selected was that at which the stiffness of the materials was similar in both compression methods, comparing the morphology of the present CFs with that of other fibrous materials analyzed in a previous work [ 56 ]. The excitation frequency was also fixed and identical in each measurement, as it had previously been observed to affect the elastic properties of fibrous materials, in addition to the effect of the pre-compression load.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and Thermal Behavior of Fibrous Carbon Materials

et al. 2021

View full text Add to dashboard Cite

The ability of various commercial fibrous carbon materials to withstand stress and conduct heat has been evaluated through experimental and analytical studies. The combined effects of different micro/macro-structural characteristics were discussed and compared. Large differences in mechanical behavior were observed between the different groups or subgroups of fibrous materials, due to the different types of fibers and the mechanical and/or chemical bonds between them. The application of the Mooney–Rivlin model made it possible to determine the elastic modulus of soft felts, with a few exceptions, which were studied in-depth. The possible use of two different mechanical test methods allowed a comparison of the results in terms of elastic modulus obtained under different deformation regimes. The effective thermal conductivity of the same fibrous materials was also studied and found to be much lower than that of a single carbon fiber due to the high porosity, and varied with the bulk density and the fiber organization involving more or less thermal contact resistances. The thermal conductivity of most materials is highly anisotropic, with higher values in the direction of preferential fiber orientation. Finally, the combination of compression and transient thermal conductivity measurement techniques allowed the heat conduction properties of the commercial fibrous carbons to be investigated experimentally when compressed. It was observed that thermal conductivity is strongly affected under compression, especially perpendicular to the main fiber orientation.

show abstract

“…The eigenvalues are ordered in pairs of a forward and a backward propagating wave. A classical solution to (10) isŝ(x 2 ) = exp{−(x 2 − x * )A}ŝ(x * ), which, using decomposition (13), can be written asŝ…”

Section: Global Matrix Solution Of the Biot Equationsmentioning

confidence: 99%

“…The reproducibility of the results was poor, especially with materials having a high flow resistivity. Recently, Bonfiglio et al [13] reported a result where fourteen independent laboratories measured the elastic properties of specimens of the same porous materials. Again the finding was that the reproducibility of the experimental methods is poor, and in the worst case the results differed by two orders of magnitude.…”

Section: Introductionmentioning

confidence: 99%

Characterising poroelastic materials in the ultrasonic range - A Bayesian approach

Niskanen

Dazel

Groby

et al. 2019

Journal of Sound and Vibration

Self Cite

View full text Add to dashboard Cite

Acoustic fields scattered by poroelastic materials contain key information about the materials' pore structure and elastic properties. Therefore, such materials are often characterised with inverse methods that use acoustic measurements. However, it has been shown that results from many existing inverse characterisation methods agree poorly. One reason is that inverse methods are typically sensitive to even small uncertainties in a measurement setup, but these uncertainties are difficult to model and hence often neglected. In this paper, we study characterising poroelastic materials in the Bayesian framework, where measurement uncertainties can be taken into account, and which allows us to quantify uncertainty in the results. Using the finite element method, we simulate measurements where ultrasonic waves are incident on a water-saturated poroelastic material in normal and oblique angles. We consider uncertainties in the incidence angle and level of measurement noise, and then explore the solution of the Bayesian inverse problem, the posterior density, with an adaptive parallel tempering Markov chain Monte Carlo algorithm. Results show that both the elastic and pore structure parameters can be feasibly estimated from ultrasonic measurements.

show abstract

How reproducible are methods to measure the dynamic viscoelastic properties of poroelastic media?

Cited by 21 publications

References 13 publications

Reproducibility of sound-absorbing periodic porous materials using additive manufacturing technologies: Round robin study

Reproducibility of sound-absorbing periodic porous materials using additive manufacturing technologies: Round robin study

Mechanical and Thermal Behavior of Fibrous Carbon Materials

Characterising poroelastic materials in the ultrasonic range - A Bayesian approach

Contact Info

Product

Resources

About