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Fatigue & Fracture Mechanics: 33rd Volume
ASTM Selected Technical Papers
Fatigue & Fracture Mechanics: 33rd Volume
By
WG Reuter
WG Reuter
1
INEEL
?
Idaho Falls, Idaho
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RS Piascik
RS Piascik
2
NASA Langley Research Center
?
Hampton, Virginia
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ISBN-10:
0-8031-2899-1
ISBN:
978-0-8031-2899-6
No. of Pages:
786
DOI:
https://doi.org/10.1520/STP1417-EB
Publisher:
ASTM International
Publication date:
2003
eBook Chapter

Fatigue Crack Growth Mechanisms in Alumina at High Temperature

By
MT Kokaly
MT Kokaly
1
Research Engineer
,
Fatigue Technology Inc.
,
401 Andover Park East, Seattle, WA 98188
.
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,
AS Kobayashi
AS Kobayashi
2
Professor Emeritus
,
University of Washington
, Department of Mechanical Engineering,
Seattle, WA, 98195-2600
.
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,
KW White
KW White
3
Professor
,
University of Houston
, Department of Mechanical Engineering,
Houston
.
TX, 77204-4792
.
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Doi:
https://doi.org/10.1520/STP11092S
Page Count:
14
  • Published:
    2003

The wake fracture process zone (FPZ) of an alumina WL-DCB specimen subjected to cyclic loading at room temperature to 800°C was analyzed by a hybrid experimental-numerical procedure involving phase-shifting moiré interferometry and finite element analysis. A residual crack opening profile was found upon unloading and remained during subsequent cyclic loading. This anomaly is attributed to the butting of fully and partially pulled-out grains and provides a mechanistic explanation for the common notion that monolithic ceramics do not fatigue.

Keywords:
fatigue, alumina, fracture process zone

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