Method of testing the state of materials (Machine-translation by Google Translate, not legally binding)

Method of testing the state of materials, comprising the steps of injecting an input ultrasound signal xinp (n) with a frequency f given in a sample of material to be tested, being f less than or equal to the characteristic frequency of the material under test; receive an output signal x (n) after p...

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Bibliographische Detailangaben
Hauptverfasser: CARRION GARCIA, Alicia, GOSALBEZ CASTILLO, Jorge, MIRALLES RICOS, Ramón, GENOVES GOMEZ, Vicente, PAYA BERNABEU, Jorge Juan
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:Method of testing the state of materials, comprising the steps of injecting an input ultrasound signal xinp (n) with a frequency f given in a sample of material to be tested, being f less than or equal to the characteristic frequency of the material under test; receive an output signal x (n) after passing through the material sample; select a value for a delay between consecutive samples l; select a value for an embedded dimension e; reconstruct a phase space of the signal x (n); calculate a matrix of recurring representations; calculate the degree of determinism; and determine the presence of damage to the material for a ted value of less than 1. (Machine-translation by Google Translate, not legally binding) Método de ensayo del estado de materiales, que comprende las etapas de inyectar una señal de ultrasonidos de entrada xinp(n) con una frecuencia f dada en una muestra de material que va a someterse a ensayo, siendo f inferior o igual a la frecuencia característica del material sometido a ensayo; recibir una señal de salida x(n) tras su paso a través de la muestra de material; seleccionar un valor para un retardo entre muestras consecutivas L; seleccionar un valor para una dimensión embebida E; reconstruir un espacio de fases de la señal x(n); calcular una matriz de representaciones recurrentes; calcular el grado de determinismo; y determinar la presencia de daños en el material para un valor de DET inferior a 1.