Stress Intensity Factor Solutions

Center Through Crack in Plate

Stress intensity:
Geometry factor, tension:
Geometry factor, bending:	Yb = Yt / 2

Definitions:

References:

1. AFRL-VA-WP-TR-2003-3002, "USAF Damage Tolerant Design Handbook: Guidelines for the Analysis and Design of Damage Tolerant Aircraft Structures," 2002
2. API 579-1 / ASME FFS-1, "Fitness-For-Service," The American Petroleum Institute and The American Society of Mechanical Engineers, 2007

Single Edge Through Crack in Plate

Stress intensity:
Geometry factor, tension:
Geometry factor, bending:
Dimension ratio:	α = a / b

Definitions:

References:

1. Dowling, Norman E., "Mechanical Behavior of Materials: Engineering Methods for Deformation, Fracture, and Fatigue," 3rd Edition

Elliptical Surface Crack in Plate

Stress intensity:
Geometry factor, tension:
Geometry factor, bending:	Yb = H·Yt
	H = H1 + (H2 − H1)(sin ϕ)p
	ϕ = 0° at c-tip,  ϕ = 90° at a-tip (full depth of crack)

a ≤ c	a > c
---
---

Definitions:

References:

1. Anderson, T.L., "Fracture Mechanics: Fundamentals and Applications," 3rd Edition

Corner Surface Crack in Plate

Stress intensity:
Geometry factor, tension:
Geometry factor, bending:
	H = H1 + (H2 − H1)(sin ϕ)p
	ϕ = 0° at c-tip,  ϕ = 90° at a-tip

a ≤ c	a > c
---
---

Definitions:

References:

1. Anderson, T.L., "Fracture Mechanics: Fundamentals and Applications," 3rd Edition

Thumbnail Crack in Solid Cylinder

Stress intensity:
Geometry factor, tension:
Geometry factor, bending:

Definitions:

References:

1. AFRL-VA-WP-TR-2003-3002, "USAF Damage Tolerant Design Handbook: Guidelines for the Analysis and Design of Damage Tolerant Aircraft Structures," 2002