Adsorption and kinetic effects on crack growth in MnZn ferrites

M.A.H. Donners, L.J.M.G. Dortmans, G. With, de

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

The variation of the fracture toughness of MnZn ferrite ceramics with varying loading rate and humidity was determined with the aid of the single edge notched beam (SENB) test. A strong decrease with increasing humidity and decreasing loading rate was observed. A model for subcritical crack growth incorporating kinetic and adsorption effects was formulated to analyze the data. The value of the adsorptioncontrolled fracture toughness was determined independently by double torsion experiments and agreed favorably with the values as determined from the SENB data using the model. The strength of the material was determined, and analysis showed a strength behavior similar to the fracture toughness behavior, as predicted by the model. The analysis presented can be used to assess the subcritical crack growth behavior using a limited number of SENB specimens.
Original languageEnglish
Pages (from-to)1377-1388
Number of pages11
JournalJournal of Materials Research
Volume15
Issue number6
DOIs
Publication statusPublished - 2000

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Ferrites
fracture strength
Fracture toughness
ferrites
Crack propagation
cracks
Adsorption
adsorption
humidity
Atmospheric humidity
kinetics
loading rate
Growth kinetics
Torsional stress
torsion
Ferrite
ceramics
Experiments

Cite this

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title = "Adsorption and kinetic effects on crack growth in MnZn ferrites",
abstract = "The variation of the fracture toughness of MnZn ferrite ceramics with varying loading rate and humidity was determined with the aid of the single edge notched beam (SENB) test. A strong decrease with increasing humidity and decreasing loading rate was observed. A model for subcritical crack growth incorporating kinetic and adsorption effects was formulated to analyze the data. The value of the adsorptioncontrolled fracture toughness was determined independently by double torsion experiments and agreed favorably with the values as determined from the SENB data using the model. The strength of the material was determined, and analysis showed a strength behavior similar to the fracture toughness behavior, as predicted by the model. The analysis presented can be used to assess the subcritical crack growth behavior using a limited number of SENB specimens.",
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Adsorption and kinetic effects on crack growth in MnZn ferrites. / Donners, M.A.H.; Dortmans, L.J.M.G.; With, de, G.

In: Journal of Materials Research, Vol. 15, No. 6, 2000, p. 1377-1388.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

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AU - Donners, M.A.H.

AU - Dortmans, L.J.M.G.

AU - With, de, G.

PY - 2000

Y1 - 2000

N2 - The variation of the fracture toughness of MnZn ferrite ceramics with varying loading rate and humidity was determined with the aid of the single edge notched beam (SENB) test. A strong decrease with increasing humidity and decreasing loading rate was observed. A model for subcritical crack growth incorporating kinetic and adsorption effects was formulated to analyze the data. The value of the adsorptioncontrolled fracture toughness was determined independently by double torsion experiments and agreed favorably with the values as determined from the SENB data using the model. The strength of the material was determined, and analysis showed a strength behavior similar to the fracture toughness behavior, as predicted by the model. The analysis presented can be used to assess the subcritical crack growth behavior using a limited number of SENB specimens.

AB - The variation of the fracture toughness of MnZn ferrite ceramics with varying loading rate and humidity was determined with the aid of the single edge notched beam (SENB) test. A strong decrease with increasing humidity and decreasing loading rate was observed. A model for subcritical crack growth incorporating kinetic and adsorption effects was formulated to analyze the data. The value of the adsorptioncontrolled fracture toughness was determined independently by double torsion experiments and agreed favorably with the values as determined from the SENB data using the model. The strength of the material was determined, and analysis showed a strength behavior similar to the fracture toughness behavior, as predicted by the model. The analysis presented can be used to assess the subcritical crack growth behavior using a limited number of SENB specimens.

U2 - 10.1557/JMR.2000.0200

DO - 10.1557/JMR.2000.0200

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JF - Journal of Materials Research

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