کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1476507 | 991154 | 2010 | 7 صفحه PDF | دانلود رایگان |
Reliable assessment of structural integrity of fuel cells requires the knowledge of the mechanical properties of their individual components, in particular the fracture toughness. A technique is presented to measure the critical energy-release rate/fracture toughness of thin ceramic layers such as the anode material (NiO–YSZ) in a fuel cell. The approach involves a new specimen geometry which consists of a thin ceramic glued onto thick steel beams to form a double cantilever beam (DCB) specimen. The fracture toughness values, measured from truly sharp cracks, are obtained over a range of applied energy-release rates: from crack growth initiation to fast fracture. The fracture toughness is measured to be 1.97 ± 0.13 MPam at crack growth initiation.
Journal: Journal of the European Ceramic Society - Volume 30, Issue 15, November 2010, Pages 3173–3179