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Speed of sound in metals by the time of flight method

Denilson B. De Souza Jr ; Araújo, John W. B. De ; Kakuno, Edson M.

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Título:
Speed of sound in metals by the time of flight method
Autor: Denilson B. De Souza Jr ; Araújo, John W. B. De ; Kakuno, Edson M.
Assuntos: Applied Physics ; Education Policy ; FOS: Political science
Notas: RelationTypeNote: IsSupplementTo -- 10.1590/1806-9126-rbef-2020-0164
10.1590/1806-9126-rbef-2020-0164
Descrição: Abstract This work proposes a simple instrumentation, intended for experimental high school or undergraduate levels, capable of determining the speed of sound in metal bars through the flight time, i.e., the propagation time of a longitudinal pulse through the bar. The pulse is produced from a disturbance (mechanical shock) at one end of a bar, its speed is obtained by the ratio of the space traveled by the pulse and its propagation time. For steel, the value of 4.7 km/s was found, with 5.3% of total uncertainty in relation to the theoretical value.
Editor: SciELO journals
Data de criação/publicação: 2021
Idioma: Inglês

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