tap density

tap density

[′tap ‚den·səd·ē]
(metallurgy)
The apparent density of a volume of metal powder obtained when its receptacle is tapped or vibrated.
References in periodicals archive ?
Tap density also called packed density is the density of a powder, it describes the bulk density of a powder after compression by tapping the container of powder a number of times, to settle content in a container, usually a graduated glass cylinder container, under specified conditions, where bulk density of a powder describes the weight or mass of powder in a specified volume.
But when polyvinyl alcohol is used, tap density increases when the proportion of polyvinyl alcohol reaches 2% by weight, to the highest value as shown in Figure (4), it is found that the size of particulate is small when this ratio is maintained.
Tap density was determined by tapping the powder 300 times using a standardized tapping procedure of 38 taps per minute [6].
Milled roller compacted blends: Ratios of granules to fines, bulk and tap density, Carr index and flow properties, and
Tapped densities of powder samples were determined by a tap density apparatus (Intelli, Kshitij Innovations, India).
Hausners Index was calculated as the ratio of tap density to bulk density of the samples (3, 4)
The granules of formulations (Fl and F2) were tested for flow properties such as bulk density, tap density, Hausner ratio, compressibility index, and angle of repose [Table 2].
Data on physical properties includes coverage of such properties as boiling point, bulk and tap density, compression characteristics, hygroscopicity, flowability, melting point, moisture content, moisture-absorption isotherms, particle size distribution, rheology, specific surface area, and solubility.
Transverse Axial Pressure) density version of the GeoPyc emulates the classical tap density analysis - faster and with less noise.
These values correspond with the tap density of the powder, reported to be 52% of the bulk density of the PC (5).