degraded state
IRI: https://spec.industrialontologies.org/ontology/construct/DegradedState
Defined In: https://spec.industrialontologies.org/ontology/maintenance/Maintenance/
SubClass Of: maintenance state
Class Hierarchy
owl:Thing › bfo:entity › bfo:occurrent › bfo:process › material state › maintenance state › degraded state
Definition
state of reduced ability to perform as required but with acceptable reduced performance
Examples
- having a small crack, having a partial blockage, having an oscillating reading
Primitive Class
This class is declared primitive and it does not have necessary and sufficient condiftions defined.
Primitive Rationale
we do not have the terms to deal with the concepts in the 2nd half of the NL definition about ‘grade of realization’
Formal Axioms
First-Order Logic Axioms
DegradedState(x) → MaintenanceState(x)
Semi-Formal Natural Language Axioms
if x is a ‘degraded state’ then x is a ‘maintenance state’
Description Logic
SubClassOf: constr:MaintenanceState
constr:DegradedState DisjointWith: (constr:FailedState, constr:OperatingState)