`quantitykind:MechanicalSurfaceImpedance`

http://qudt.org/vocab/quantitykind/MechanicalSurfaceImpedance

Predicate	Object
`rdf:type`	`qudt:QuantityKind`
`dcterms:description`	“Mechanical surface impedance at a surface, is the complex quotient of the total force on the surface by the component of the average sound particle velocity at the surface in the direction of the force”
`qudt:applicableUnit`	`unit:N-SEC-PER-M3` `unit:PA-SEC-PER-M` `unit:RAYL` `unit:RAYL_MKS`
`qudt:hasDimensionVector`	`qkdv:A0E0L-2I0M1H0T-1D0`
`qudt:latexDefinition`	\(Z_m = Z_a A^2\), where \(A\) is the area of the surface considered and \(Z_a\) is the acoustic impedance.
`qudt:plainTextDescription`	“Mechanical surface impedance at a surface, is the complex quotient of the total force on the surface by the component of the average sound particle velocity at the surface in the direction of the force ”
`qudt:specializationOf`	`quantitykind:MassPerAreaTime`
`qudt:symbol`	“Z”
`rdfs:comment`	“Applicable units are those of quantitykind:MechanicalSurfaceImpedance” “There are various interpretations of MechanicalSurfaceImpedance: Pressure/Velocity - https://apps.dtic.mil/sti/pdfs/ADA315595.pdf, Force / Speed - https://www.wikidata.org/wiki/Q6421317, and (Pressure / Velocity)**0.5 - https://www.sciencedirect.com/topics/engineering/mechanical-impedance. We are seeking a resolution to these differences. ”
`rdfs:isDefinedBy`	http://qudt.org/3.5.0/vocab/quantitykind
`rdfs:label`	“Mechanical Surface Impedance”@en
`skos:broader`	`quantitykind:MassPerAreaTime`
`vaem:todo`	“belongs to SOQ-ISO”

Generated 2026-07-28T13:52:55.573+00:00