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

constr:DegradedState ⊑ constr:MaintenanceState

constr:DegradedState ⊓ constr:FailedState ⊑ ⊥

constr:DegradedState ⊓ constr:OperatingState ⊑ ⊥

SubClassOf: constr:MaintenanceState

constr:DegradedState DisjointWith: (constr:FailedState, constr:OperatingState)