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Evaluation of Constants in Fracture Mechanics by Means Non-destructive Testing of Al+3.5%Mg Alloys
Alexander Popov1 and Georgy Dobrev2
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DOI:10.17265/2161-6221/2018.9-10.004
1. Department of Solid Mechanics, Institute of Mechanics-Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
2. Institute of Metal Science, Eqipment, and Technologies-BAS, Sofia 1574, Bulgaria
The constants in fracture mechanics are fracture toughness (for plane strain), critical value of J—integral , critical value of crack tip opening displacement. Mechanical testing under certain conditions to determine them is used. They are complicated, long and expensive procedures. In practice, it is interesting to determine the constant in fracture mechanics for elements of constructions by means of non-destructive testing (NDT) (non-destructive evaluations, NDE) from Al+3.5%Mg alloys (according EN 1706).
Constant in fracture mechanics, Al+3.5%Mg alloys, ultrasonic, hardness.