Matches in SemOpenAlex for { <https://semopenalex.org/work/W273463156> ?p ?o ?g. }
Showing items 1 to 45 of
45
with 100 items per page.
- W273463156 abstract "Abstract : Polyalkylene Glycol (PAG) has been proposed as a sonar-transducer fill fluid with nearly ideal properties, but PAG is far from being a universal fill fluid. Its speed of sound and acoustic impedance are both about 13% lower than those of seawater at 20 C, causing internal reflections (sensitivity loss) and refraction (directivity loss). Low thermal expansion and moderate compressibility make PAG a good choice in a nonpressure-relieved design. The electrical resistivity of PAG is 1000 to 10,000,000 times lower than that of other common fill fluids, partly from high water solubility. Also, some of the large amount of water in PAG at equilibrium will precipitate if the temperature drops and may cause catastrophic failure. Another concern with PAG is low resistivity if exposed to tin salts or perhaps tin, which may cause electrical failure. PAG is in general compatible with fewer acoustic-grade elastomers than caster oil. An advantage of PAG is low viscosity. It is much easier than caster oil to degas; hence air bubbles are less likely. The toxicity of PAG is low, and poisoning by vapors from overheating is easily avoided. PAG is readily available and not costly. If the vendor ceased production, the synthesis and specifications in this report would let additional vendors become qualified. In conclusion, with care in avoiding water exposure and in choosing exposed materials, PAG may find use in several Navy sonar units. (Author)" @default.
- W273463156 created "2016-06-24" @default.
- W273463156 creator A5018882333 @default.
- W273463156 date "1979-02-15" @default.
- W273463156 modified "2023-09-27" @default.
- W273463156 title "The use of Polyalkylene Glycol in Sonar Transducers." @default.
- W273463156 hasPublicationYear "1979" @default.
- W273463156 type Work @default.
- W273463156 sameAs 273463156 @default.
- W273463156 citedByCount "0" @default.
- W273463156 crossrefType "journal-article" @default.
- W273463156 hasAuthorship W273463156A5018882333 @default.
- W273463156 hasConcept C119599485 @default.
- W273463156 hasConcept C120665830 @default.
- W273463156 hasConcept C121332964 @default.
- W273463156 hasConcept C127413603 @default.
- W273463156 hasConcept C145889102 @default.
- W273463156 hasConcept C159985019 @default.
- W273463156 hasConcept C177562468 @default.
- W273463156 hasConcept C192562407 @default.
- W273463156 hasConcept C24890656 @default.
- W273463156 hasConcept C2778284599 @default.
- W273463156 hasConcept C555745239 @default.
- W273463156 hasConcept C56318395 @default.
- W273463156 hasConcept C65646983 @default.
- W273463156 hasConceptScore W273463156C119599485 @default.
- W273463156 hasConceptScore W273463156C120665830 @default.
- W273463156 hasConceptScore W273463156C121332964 @default.
- W273463156 hasConceptScore W273463156C127413603 @default.
- W273463156 hasConceptScore W273463156C145889102 @default.
- W273463156 hasConceptScore W273463156C159985019 @default.
- W273463156 hasConceptScore W273463156C177562468 @default.
- W273463156 hasConceptScore W273463156C192562407 @default.
- W273463156 hasConceptScore W273463156C24890656 @default.
- W273463156 hasConceptScore W273463156C2778284599 @default.
- W273463156 hasConceptScore W273463156C555745239 @default.
- W273463156 hasConceptScore W273463156C56318395 @default.
- W273463156 hasConceptScore W273463156C65646983 @default.
- W273463156 hasLocation W2734631561 @default.
- W273463156 hasOpenAccess W273463156 @default.
- W273463156 hasPrimaryLocation W2734631561 @default.
- W273463156 isParatext "false" @default.
- W273463156 isRetracted "false" @default.
- W273463156 magId "273463156" @default.
- W273463156 workType "article" @default.