Prince Sattam Bin Abdul-Aziz University

COURSE OUTLINE Department of Mechanical Engineering Prince Sattam bin Abdul-Aziz University

Course number and name ME 4531: Fracture and Fatigue Instructor: Dr. Dr Mahmoud Tash Room ES-04 Class hours: 3 hours/week Sunday 9:00 to 9:50 am Tuesday 9:00 to 9:50 am Thursday 9:00 to 9:50 am

Office hours: 2 hours/week Sunday 10:00 to 10:50 pm Tuesday 10:00 to 10:50 am E-mail: [email protected] [email protected]

Description ME 4531: Fracture and Fatigue, Required Course, 3 Credit Hours. Why Structures Fail. Effect of material properties on fracture. Atomic view of fracture. Stress concentration, Effect of flaws, Stress analysis of cracks, Instability, R curves and Crack tip plasticity. Fracture mechanisms in metals Fracture mechanisms in nonmetals. Fracture toughness testing of metals. Fracture toughness testing of nonmetals. Fatigue crack propagation. Growth of short crack, Experimental measurements of fatigue crack growth

Prerequisites ME 2581, ME2591 Course objectives  Analyze why structures are failed and recognize the effect of material properties on fracture  Recognize the atomic view of fracture.  Understand the effect of stress concentration, flaws and recogize the stress analysis of cracks, the instability, the R curves, and the crack tip plasticity in fracture.  Understand and explain the different fracture mechanisms in metals and non metals  Apply and practice the fracture toughness testing of metals and non metals  Analyze the fatigue crack propagation, growth of short crack  Apply and practice experimental measurements of fatigue crack growth

Topics covered Topic # of # of Contact Hours weeks Introduction to different mechanisms of Materials 1 3 failure; Why Structures Fail? Effect of material properties on fracture 1 3 Atomic view of fracture 1 3 Stress concentration , Effect of flaws 1 3 Stress analysis of cracks 1 3 Instability and the R curves. Crack tip plasticity. 1 3 Fracture mechanisms in metals 2 6 Fracture mechanisms in non metals 2 6 Fracture toughness testing of metals 1 3 Fracture testing of non metals 1 3 Fatigue Crack propagation. Growth of short crack 2 6 Experimental measurements of fatigue crack growth 1 3 Total 15 45

Teaching Strategies  The course will be taught via lecture and tutorial sessions.  Course work assignment will be reviewed with the students.  Attendance at lectures and tutorials is compulsory. If you miss more than 25% of the lectures and tutorials you will not be allowed to attend the final exam and you will fail the course. Textbook T.L. Anderson "Fracture Mechanics: Fundamentals and Applications", Last Edition

References 1- Michael Janssen, Jan Zuidema and Russell Wanhill, "Fracture Mechanics", Last Edition. 2- Norman E Dowling, "Mechanical behavior of materials", Prentice Hall, Last Edition.

Course Assessment:  First midterm test 25/5/1437H-6/3/2016 G 20 %

2  Second midterm test 10/7/1437 H-17/4/2015G 20 %

 Quizzes 10%  Home work / Project 10%  Final Examination 40%