Engineering Sciences 247: Fracture Mechanics

Fall 2020, Tuesday and Thursday 12:00 pm–1:15 pm.

• Everything about ES 247, with up to date notes
• Prerequisite: Engineering Sciences 240 or equivalent.  If you are unsure of your background, read the sections on Elements of Linear Elasticity and Plane Elasticity Problems.

Topics

• Trouble with linear elastic theory of strength
• The Griffith paper
• Chemical bond and surface energy
• Energy release rate.  Fracture energy
• Applications of fracture mechanics
• Crack-tip field
• Linear elastic fracture mechanics
• Flaw sensitivity
• Resistance curve
• Fatigue
• Stress corrosion
• Fracture of rubber 
• Fracture of rubber.  Lecture 2
• The J integral
• Elastic-plastic fracture mechanics.  Lecture 1 
• Elastic-plastic fracture mechanics.  Lecture 2
• Crack bridging.  Lecture 1
• Crack bridging.  Lecture 2
• Mixed-mode fracture.  Curved crack path
• Interfacial fracture
• Toughness due to hysteretic deformation

Textbooks.  Quite a few books are available in the library, such as

• B. Lawn, Fracture of Brittle Solids, Cambridge University Press (1993).
• D. Broek, Elementary Engineering Fracture Mechanics.  Martinus Nijhoff Publishers, Boston (1986).
• J.M. Barsom and S.T. Rolfe, Fracture and Fatigue Control in Structures.  Prentice Hall, 1999.
• T.L. Anderson, Fracture Mechanics: Fundamentals and Applications. CRC Press, Boston (1995).
• S. Suresh, Fatigue of Materials, Cambridge University Press (1998).
• M.F. Kanninen and C.H. Popelar, Advanced Fracture Mechanics, Oxford Press (1985).
• K.B. Broberg, Cracks and Fracture, Academic Press. (1999)
• L.B. Freund, Dynamic Fracture Mechanics, Cambridge University Press (1990).

Online resources

• Alan Zehnder, Fracture Mechanics Book.
• J. W. Hutchinson, Notes on Nonlinear Fracture Mechanics
• J. W. Hutchinson and Z. Suo, Mixed-Mode Cracking in Layered Materials.
• J. W. Hutchinson, Fracture Mechanics of Thin Films and Multilayers.

Handbooks

• W.C. Young, Roark’s Formulas for Stress and Strain, 6th edition, McGraw-Hill, New York, 1989.
• R.E. Peterson, Stress Concentration Factors, John Wiley, New York, 1974. 2nd edition by W.D. Pilkey, 1997.
• H. Tada, P.C. Paris and G.R. Irwin, The Stress Analysis of Cracks Handbook, Del Research, St. Louis, MO., 1985.

Grading

• Homework (80%)
• Final exam (20%)