Process zone analysis for the single-edge notched specimen: Part I. Process zone size and crack profile

1991 ◽  
Vol 49 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Rasko P. Ojdrovic ◽  
Henry J. Petroski
Keyword(s):  
Process Zone ◽  
Zone Size ◽  
Single Edge ◽  
Notched Specimen ◽  
Crack Profile

Novel Estimation of Critical Frontal Process Zone of Ceramics by a Single-Edge V-Notched-Beam Technique

2007 ◽  
Vol 280-283 ◽  
pp. 1745-1750
Author(s):  
Chun Hong Chen ◽  
Hideo Awaji
Keyword(s):  
Fracture Toughness ◽  
Flexural Strength ◽  
Critical Size ◽  
Process Zone ◽  
Porous Alumina ◽  
Local Stress ◽  
Zone Size ◽  
Single Edge ◽  
Frontal Process ◽  
Notch Tip

A novel estimation for the critical size of the frontal process zone of ceramics is proposed using a single-edge V-notched beam (SEVNB) technique. A three-point flexure test is carried out on aluminum titanate ceramics containing a sharp V-shaped notch with different depth. An exact solution of the critical local stress is analyzed at a critical distance from the notch tip. The critical frontal process zone size is determined as the distance between the notch tip and the point where the critical local stress equals the flexural strength of specimens without notches, based on the local fracture criterion and the Griffith-Irwin criterion. The critical size of the frontal process zone, the fracture toughness and the flexural strength were also estimated for several materials, such as, alumina, porous alumina, and alumina-based nanocomposites. The relationship between these mechanical properties indicated that there was an almost linear relationship between the fracture toughness and the resultant of strength and square root of the critical frontal process zone size, and that both of them must be increased to improve the fracture toughness of ceramics.

scholarly journals Process zone size fracture criterion for ceramics.

1990 ◽  
Vol 56 (531) ◽  
pp. 2353-2358 ◽  
Author(s):  
Masaaki IWASA ◽  
Kotoji ANDO ◽  
Nobukazu OGURA
Keyword(s):  
Fracture Criterion ◽  
Process Zone ◽  
Zone Size

scholarly journals Fracture Toughness and Frontal Process Zone Size of Ceramics

2004 ◽  
Vol 53 (9) ◽  
pp. 1012-1018 ◽  
Author(s):  
Hideo AWAJI ◽  
Seong Min CHOI ◽  
Chun Hong CHEN ◽  
Nobuyuki KISHI
Keyword(s):  
Fracture Toughness ◽  
Process Zone ◽  
Zone Size ◽  
Frontal Process

On mixed mode loading of a single edge notched specimen

1996 ◽  
Vol 82 (4) ◽  
pp. R61-R66 ◽  
Author(s):  
M. R. Ayatollahi ◽  
M. J. Pavier ◽  
D. J. Smith
Keyword(s):  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Single Edge ◽  
Notched Specimen
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