Probing the three-dimensional porous and tortuous nature of absorptive glass mat (AGM) separators

Shukla, Siddharth; Kumar, Vijay; Rao, P.V.; Sharma, Sumit; Sebők, Dániel; Szenti, Imre; Rawal, Amit; Kukovecz, Ákos

doi:10.1016/j.est.2019.101003

Cited by 7 publications

(9 citation statements)

References 59 publications

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“…The three-dimensional (3D) volumes were generated from the binarized dataset using CTVox ® (Bruker, Belgium). A volume of interest (VOI) was chosen judiciously in order to avoid boundary irregularities [29,30].…”

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

“…The “structure thickness” employed under the “3D analysis” module on CTAn ® provided the number-based distribution of the object diameter. In the binarized image dataset, the white-colored material was referred to as fibers, and the values of fiber diameters were obtained from the structure thickness values by applying “3D analysis” module on binarized VOI [29,30]. The pore diameters were obtained in a similar manner after converting the pore phase into the material phase and vice-versa.…”

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

“…The pore diameters were obtained in a similar manner after converting the pore phase into the material phase and vice-versa. The number-based distributions were subsequently converted into frequency distributions to obtain the pore diameters and their corresponding distributions of the meltblown nonwoven layers [29,30]. The percentage object volume returned by the “3D analysis” module in CTAn ® is the ratio of the number of voxels occupied by the fibers to the total number of voxels in the selected VOI [29,30].…”

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

“…The number-based distributions were subsequently converted into frequency distributions to obtain the pore diameters and their corresponding distributions of the meltblown nonwoven layers [29,30]. The percentage object volume returned by the “3D analysis” module in CTAn ® is the ratio of the number of voxels occupied by the fibers to the total number of voxels in the selected VOI [29,30]. This percentage object volume, therefore, corresponds to the fiber volume fraction (Vf) of the meltblown layers.…”

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

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Structural and functional integrity of decontaminated N95 respirators: Experimental results

Sharma

Wang

Kumar

et al. 2022

Journal of Industrial Textiles

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With the recent emergence of highly transmissible variants of the novel coronavirus SARS-CoV-2, the demand for N95 respirators is expected to remain high. The extensive use of N95 respirators by the public is susceptible to demand‐supply gaps and raises concern about their disposal, threatening the environment with a new kind of plastic pollution. Herein, we investigated the filtration performance of the N95 respirator by specifically analyzing the structure in the key filtration layers of meltblown nonwoven after decontamination with one and five cycles of liquid hydrogen peroxide, ultraviolet radiation, moist heat, and aqueous soap solution treatments. With the aid of X-ray microcomputed tomography (microCT) analysis, the local structural heterogeneity of the meltblown nonwoven has been unfolded and subsequently correlated with their filtration performance at a face velocity that matched with speaking conditions (∼3.89 m/s). The filtration efficiency results of the N95 respirator remain unaltered after performing one cycle of treatment modalities (except autoclave).

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Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

Section: X-ray Microcomputed Tomography Analysismentioning

confidence: 99%

See 2 more Smart Citations

Structural and functional integrity of decontaminated N95 respirators: Experimental results

Sharma

Wang

Kumar

et al. 2022

Journal of Industrial Textiles

Self Cite

View full text Add to dashboard Cite

show abstract

“…Subsequently, binarization and despeckling of images were performed to prepare the final data set for further processing. The details of these techniques are given in our earlier work [20].…”

Section: X-ray Micro-computed Tomography Analysismentioning

confidence: 99%