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exported equivalent COPI_0000350
Silencer
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000350
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
A silencer is an assembly that bears the designed function of reducing noise levels through acoustic treatment of fluid streams.
PT-BR
Um silenciador é uma montagem que possui a função projetada de reduzir níveis de ruído através do tratamento acústico de fluxos de fluidos.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every silencer is an assembly that has the function to silence noise, and every assembly that has the function to silence noise is a silencer.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Definition]∀x (Silencer(x) ↔ Assembly(x) ∧ ∃f (NoiseSilencingFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: NoiseSilencingFunction]∀f (NoiseSilencingFunction(f) → ∀p (realizedIn(f,p) → NoiseSilencingProcess(p)) ∧ ∃p (NoiseSilencingProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Process participation signature]∀x ∀f ((Silencer(x) ∧ NoiseSilencingFunction(f) ∧ bearerOf(x,f)) → ∃m (FluidPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (FluidPortion(e) ∧ participatesIn(e,f)) ∧ processType(f,AcousticEnergyAttenuation)) — Step 5: typed participants in the realising process
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix : <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix bfo: <http://purl.obolibrary.org/obo/> . @prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> . @prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> . @prefix skos: <http://www.w3.org/2004/02/skos/core#> . @prefix qudt: <http://qudt.org/schema/qudt/> . @prefix dcterms: <http://purl.org/dc/terms/> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix apv: <http://inf.ufrgs.br/ontologies/apv#> . ### COPI — Core Ontology for Petroleum Installations ### Class module: Silencer <https://www.inf.ufrgs.br/ontologies/copi> rdf:type owl:Ontology ; dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ; dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ; dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ; skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ; skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ; skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ; skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ; owl:versionInfo "1.1.0-104-g4d16eff" ; owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ; owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ; dcterms:creator "Nicolau Oyhenard dos Santos"@en ; dcterms:contributor "Cauã Antunes" ; dcterms:contributor "Haroldo Rojas" ; dcterms:contributor "Rafael Petry" ; dcterms:contributor "Régis Romeu" ; dcterms:contributor "Mara Abel" ; dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ; dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ; dcterms:license <https://creativecommons.org/licenses/by/4.0/> ; dcterms:created "2026-04-08"^^xsd:date ; dcterms:modified "2026-07-13"^^xsd:date ; apv:GlobalMinLanguageCoverage "en pt-br" ; apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ; apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" . iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ; apv:MinAnnotationLength 20 . ### Identity-giving function :NoiseSilencingFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :NoiseSilencingProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :NoiseSilencingProcess ] ; rdfs:label "noise silencing function"@en ; rdfs:label "função de silenciamento de ruído"@pt-br . ### Process type :NoiseSilencingProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "noise silencing process"@en ; rdfs:label "processo de silenciamento de ruído"@pt-br . :NoiseSilencingProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :FluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :FluidPortion ] . ### Equipment universal: Silencer :Silencer rdf:type owl:Class ; owl:equivalentClass [ rdf:type owl:Class ; owl:intersectionOf ( iof-core:Assembly [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :NoiseSilencingFunction ] ) ] ; rdfs:label "silencer"@en ; rdfs:label "silenciador"@pt-br ; iof-av:naturalLanguageDefinition "A silencer is an assembly that bears the designed function of reducing noise levels through acoustic treatment of fluid streams."@en ; skos:definition "A silencer is an assembly that bears the designed function of reducing noise levels through acoustic treatment of fluid streams."@en ; iof-av:naturalLanguageDefinition "Um silenciador é uma montagem que possui a função projetada de reduzir níveis de ruído através do tratamento acústico de fluxos de fluidos."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every silencer is an assembly that has the function to silence noise, and every assembly that has the function to silence noise is a silencer."@en ; iof-av:firstOrderLogicAxiom "∀x(Silencer(x) ↔ Assembly(x) ∧ ∃f(NoiseSilencingFunction(f) ∧ bearerOf(x,f)))"@en ;
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
NoiseSilencingFunction ⊑ DesignedFunction
Realized in
NoiseSilencingProcess ⊑ PlannedProcess
The identity-giving function is noise reduction/silencing. ISO 15926 explicitly states 'capability of SILENCING' and CFIHOS defines it as 'intended to reduce a noise level'. This function distinguishes silencers from other equipment that may incidentally affect noise but are not designed primarily for that purpose.
2 Genus DeterminationDeterminação do Gênero
Assemblybfo:Object (BFO_0000030)
Among the parent candidates (FunctionalObject, other mechanical equipment, PipeFitting), none represent appropriate ontological genera in our framework. Silencers are complex engineered artifacts with multiple physically connected components (housing, internal baffles, absorption materials, inlet/outlet connections) that form a single causally unified object designed for acoustic treatment. They are assemblies rather than monolithic artifacts, and no more specific acoustics equipment genus exists in our current ontology.
3 Differentia SpecificaDiferença Específica
∃bearerOf.NoiseSilencingFunction

An assembly that bears the designed function of reducing noise levels through acoustic treatment.

The noise silencing function is the minimal and necessary differentia that distinguishes silencers from all other assemblies. This functional differentia is sufficient to identify any assembly designed primarily for noise reduction as a silencer, regardless of its internal mechanism (reactive, absorptive, or hybrid design).
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

These parts are universal across all silencer types - every conceivable silencer needs housing, acoustic treatment elements, and inlet/outlet connections. Specific mechanisms (reactive vs absorptive) should be modeled at subtype levels.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'carrying acoustic energy (noise)'}
OutputsSaídas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'reduced acoustic energy level'}
TransformationTransformação
acoustic energy attenuation - sound pressure levels are reduced through absorption, reflection, interference, or resonance
Silencers process a single fluid stream, reducing its noise content while maintaining flow. The transformation is specifically acoustic - the fluid composition and pressure may be largely unchanged, but the acoustic energy is attenuated.
MetadataMetadados
COPI IDCOPI IDCOPI_0000350
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000350
StatusStatusexported
Axiom modeModoequivalent
CreatedCriado2026-04-16
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneroAssembly
Root classClasse raizAssembly
Axiom modeModoequivalent
FunctionFunçãoNoiseSilencingFunction
ProcessProcessoNoiseSilencingProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 2 sources
ISO 15926-4 SILENCER
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
CFIHOS silencer
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.