67 citations · 171 across the 8 of their papers we have counts for
8 papers
Interlaboratory comparison of particle filtration efficiency testing equipment
Timothy A. Sipkens, Ruth Perez Calderon, Richard G. Green +2
This work presents the results of two interlaboratory comparisons of particle filtration efficiency measurements performed by a network of laboratories across Canada and Australia.…
Estimating density, velocity, and pressure fields in supersonic flow using physics-informed BOS
Joseph P. Molnar, Lakshmi Venkatakrishnan, Bryan E. Schmidt +2
We report a new workflow for background-oriented schlieren (BOS), termed "physics-informed BOS," to extract density, velocity, and pressure fields from a pair of reference and dist…
Size-dependent mass absorption cross-section of soot particles from various sources
Joel C. Corbin, Tyler J. Johnson, Fengshan Liu +4
The mass absorption cross-section (MAC) of combustion-generated soot is used in pollution and emissions measurements to quantify the mass concentration of soot and in atmospheric m…
Filtration and breathability of nonwoven fabrics used in washable masks
Thomas W. Bement, Ania Mitros, Rebecca Lau +6
This study explores nonwoven and woven fabrics to improve upon the performance of the widespread all-cotton mask, and examines the effect of layering, machine washing and drying on…
Comparison of measurement systems for assessing number- and mass-based particle filtration efficiency
Timothy A. Sipkens, Joel C. Corbin, Triantafillos Koukoulas +8
The particle filtration efficiency (PFE) of a respirator or face mask is one of its key properties. While the physics of particle filtration results in the PFE being size-dependent…
Systematic experimental comparison of particle filtration efficiency test methods for commercial respirators and face masks
Joel C. Corbin, Greg J. Smallwood, Ian Leroux +7
Respirators, medical masks, and barrier face coverings all filter airborne particles using similar physical principles. However, they are tested for certification using a variety o…
Characterizing soot in TEM images using a convolutional neural network
Timothy A. Sipkens, Max Frei, Alberto Baldelli +3
Soot is an important material with impacts that depend on particle morphology. Transmission electron microscopy (TEM) represents one of the most direct routes to qualitatively asse…
Properties of materials considered for improvised masks
Steven. N. Rogak, Timothy A. Sipkens, Mang Guan +3
During a pandemic in which aerosol and droplet transmission is possible, the demand for masks that meet medical or workplace standards can prevent most individuals or organizations…