A novel technique to generate sharp cracks in metallic/ceramic functionally graded materials by reverse 4-point bending

Carpenter, R. D.; Paulino, Gláucio H.; Munir, Zuhair A.; Gibeling, J.C.

doi:10.1016/s1359-6462(00)00433-4

Cited by 24 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They obtained the first six terms of the expansion for opening and shear modes of crack deformation. More recent experimental fracture mechanics studies can also be found in the literature (Butcher et al, 1998;Parameswaran and Shukla, 1998;Carpenter et al, 2000;Abanto-Bueno and Lambros, 2002).…”

Section: Introductionmentioning

confidence: 91%

Stress intensity factors for three-dimensional cracks in functionally graded materials using enriched finite elements

Ayhan

2007

International Journal of Solids and Structures

View full text Add to dashboard Cite

A three-dimensional enriched finite-element methodology is presented to compute stress intensity factors for threedimensional cracks contained in functionally graded materials (FGMs). A general-purpose 3D finite-element based fracture analysis program, FRAC3D, is enhanced to include this capability. First, using available solutions from the literature, comparisons have been made in terms of stresses under different loading conditions, such as uniform tensile, bending and thermal loads. Mesh refinement studies are also performed. The fracture solutions are obtained for edge cracks in an FGM strip and surface cracks in a finite-thickness FGM plate and compared with existing solutions in the literature. Further analyses are performed to study the behavior of stress intensity factor near the free surface where crack front terminates. It is shown that three-dimensional enriched finite elements provide accurate and efficient fracture solutions for threedimensional cracks contained in functionally graded materials.

show abstract

Section: Introductionmentioning

confidence: 91%

Stress intensity factors for three-dimensional cracks in functionally graded materials using enriched finite elements

Ayhan

2007

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…21 Fatigue precracking is quite difficult for thin ceramic layers as the ones used in the present work, and it is costly in general. Several approaches, therefore, have been proposed to precrack brittle materials for bending specimens 16,[22][23][24][25] and compact-tension (CT) or DCB specimens. 26,27 In the present work, two different ways to introduce a sharp crack at the root of the notch were tried.…”

Section: Specimen Geometrymentioning

confidence: 99%

Fracture properties of nickel-based anodes for solid oxide fuel cells

Goutianos

Frandsen

Sørensen

2010

Journal of the European Ceramic Society

View full text Add to dashboard Cite

“…In other work, we have shown experimentally that significant toughening and R-curve fracture behavior can be achieved in functionally graded materials [13,14]. Therefore, we hypothesized that good fracture toughness levels could be obtained in functionally graded Nb/Nb 5 Si 3 composites at Nb levels low enough to retain high strength as well.…”

Section: Introductionmentioning

confidence: 89%