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Avance de estudios en mecánica de fractura y análisis de falla realizados en los laboratorios de metalurgia del Instituto de Ensayos e Investigación de la Universidad Nacional de Colombia
DOI:
https://doi.org/10.15446/ing.investig.n23.20676Keywords:
Falla, Fractura, Grietas, Tenacidad, Fatiga, Engranaje (es)Fail, Fracture, Cracks, Toughness, Fatigue, Gear (en)
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En este trabajo se reportan brevemente tres estudios en el área de fractura. En el primero mediante ensayos de tenacidad de fractura se encuentra que al reducir ligeramente la dureza a partir de 60 HRC no aumenta claramente la resistencia a la propagación inestable de grietas en acero AISI 01. Luego se presentan dos casos de análisis de falla por fatiga en que se sigue la secuencia de análisis: (a) observaciones de campo, (b) análisis macroscópico de fractura, (c) ensayos de dureza y examen microscópico, (d) cálculo de esfuerzos y (e) conclusiones y recomendaciones. Se concluye que en ambos casos la falla se debe a inusitada sobrecarga de operación.
References
Broek, D., Elementary Engineering Fracture Mechanics, 3 ed., Martinus Nijhoff, 1982. DOI: https://doi.org/10.1007/978-94-011-9055-8
"Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials" ASTM Annual Book of Standards, Part 10, ASTM, E 399-81, 1981.
M. Howes, Source Book on Gear Design, Technology and Performance, ASM, 1980.
H. Hernández, Criterios de Diseño con Tolerancia de Daño-Prevención de Fallas Catastróficas. INACERO, Boletín 19, 1986. DOI: https://doi.org/10.15446/ing.investig.n14.19559
M. Kanninen, Advanced Fracture Mechanics, Oxford University Press, 1985.
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Copyright (c) 1991 Héctor Hernández A.
This work is licensed under a Creative Commons Attribution 4.0 International License.
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