Use este identificador para citar ou linkar para este item: http://carpedien.ien.gov.br:8080/handle/ien/2517
Tipo: conferenceObject
Título: experimental investigation of attenuation of ultrassonic field in a circular pipe by a spherical body
Autor(es): Lamy, Carlos Alfredo
Faccini, José Luiz Horácio
Su, Jian
Cunha Filho, Jurandir de Souza
Resumo: Ultrasonic techniques are low cost and non intrusive for two-phase flow measurements, especially for applications in nuclear power plants, petrochemical plants and industrial plants. Ultrasonic transducers of different frequencies and sizes generate different ultrasonic fields in different pipe diameters. The objective of this work is to study experimentally the influence, in the ultrasonic signal, of a steel sphere, that simulates a discontinuity like an air bubble, immerse in a vertical water column. It was applied the pulse-echo ultrasonic technique and it was investigated the influence of the steel sphere in the ultrasonic signal amplitude – from the sphere and from the back wall. A stainless steel AISI 316 pipe in vertical position of 2 mm thickness and 53 mm internal diameter was used. The steel spheres were of diameters 3/16” and 5/16”. A transducer of 10 MHz frequency / ¼” diameter and another of 5 MHz frequency / ½”diameter were used to evaluate the influence of the spheres in the ultrasonic field. The experimental results show that the frequency influences the transducer sensitivity.
Palavras-chave: INAC 2007
Ultrassonic techinique
Two-phase flow
Idioma: eng
País: Brasil
Editor: Instituto de Engenharia Nuclear
Sigla da Instituição: IEN
Tipo de Acesso: openAccess
URI: http://carpedien.ien.gov.br:8080/handle/ien/2517
Data do documento: Set-2007
Aparece nas coleções:Desenvolvimento e Caracterização de Materiais Funcionais e Estruturais para o Setor Nuclear - Trabalhos de Congresso

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EXPERIMENTAL INVESTIGATION OF ATTENUATION OF ULTRASONIC FIELD IN A CIRCULAR PIPE BY A SPHERICAL BODY.pdf217,89 kBAdobe PDFVisualizar/Abrir


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