Caracterización dimensional con ultrasonido por arreglo de fases de discontinuidades inducidas en acero ASTM A36 mediante procesos de electroerosión y soldadura SMAW W

  • Carlos Andrés Galán-Pinilla Universidad Industrial de Santander
  • Luz Amparo Quintero-Ortiz Universidad Industrial de Santander
  • Julián Orlando Herrera-Ortiz Universidad Industrial de Santander

Resumen

En esta investigación se evaluó el efecto que tienen las variables de la técnica de ultrasonido con arreglo de fases en los escaneos con haz angular sectorial “S-Scan” y la morfología geométrica de las discontinuadas planares como la inclinación respecto al haz ultrasónico y la forma del extremo sobre la exactitud en las mediciones. El estudio se desarrolló en dos etapas: en la primera se diseñaron y elaboraron ocho muestras de acero ASTM A36 con entallas mecanizadas mediante electroerosión por penetración y una muestra soldada con falta de penetración en una soldadura a tope; y en la segunda la medición del tamaño de las discontinuidades a partir de mediciones con ultrasonido empleando diferentes configuraciones del arreglo de fases. Mediante análisis estadístico se determinó el efecto de cada variable y configuraciones de inspección con errores entre 0,2 % y 120 %.

Palabras clave: entallas mecanizadas por electroerosión, escaneo sectorial, ultrasonido por arreglo de fases, resolución angular, EDM, PAUT, S-Scan

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Publicado
2021-06-07