Identification of structural changes due to the impact testing of a charpy specimen used for reactor pressure vessel materials testing by ultrasonic analysis
(Englisch)
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Ultrasonic transit time variation was measured for broken base and weld Charpy impact test specimens in order to see if there were any Analytical work by modeling a real impact testing using a finite element method (FEM) analysis was also performed in parallel with a real ultrasonic experiment. The results showed that a longer transit time was observed near the broken area and then abruptly died away from the center, and this can be correlated with the large stresses obtained from the FEM analysis for the specimen, where a large stress distribution was also observed near the center notched area and died away as soon as we move away toward the end of the specimen. This study suggests that an adequate metallurgical understanding must be given to the reuse of the area subjected to impact testing, especially from a broken half specimen. More scientific research is needed for a specimen embrittled by neutrons in a nuclear reactor vessel.
Identification of structural changes due to the impact testing of a charpy specimen used for reactor pressure vessel materials testing by ultrasonic analysis
Weitere Titelangaben:
Nachweis von Gefügeänderungen während des Schlagversuches in einer Charpy-Probe aus Reaktordruckbehälterwerkstoff durch Ultraschallanalyse