Published

1991-03-01

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.n23.20676

Keywords:

Falla, Fractura, Grietas, Tenacidad, Fatiga, Engranaje (es)
Fail, Fracture, Cracks, Toughness, Fatigue, Gear (en)

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Authors

  • Héctor Hernández A. Universidad Nacional de Colombia

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.

"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.

M. Kanninen, Advanced Fracture Mechanics, Oxford University Press, 1985.

How to Cite

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. (1991). Ingeniería E Investigación, 23, 20-24. https://doi.org/10.15446/ing.investig.n23.20676

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Copyright (c) 1991 Héctor Hernández A.

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