MARE523 : Fracture Mechanics

Department

Department of Marine Engineering

Academic Program

Bachelor in Marine machinery and engines

Type

Elective

Credits

03

Prerequisite

MARE304MARE309

Overview

Introduction to mechanics, elasticity, plasticity, plane stress and plane strain, fracture criteria, stress concentrations, Linear Elastic Fracture Mechanics (LEFM), Griffith theory, strain energy release rate (G), stress intensity factor (K), crack tip plasticity, plastic constraint, critical crack size, Crack Tip Opening Displacement (CTOD), KIc testing, R-curve (K-Δa). Elastic-Plastic Fracture Mechanics (EPFM), J- integral, JIc testing, fracture toughness resistance curve (R-curve, J-Δa). Fracture mechanisms: Ductile and brittle fracture, DBTT, environmentally assisted cracking growth, Fatigue crack growth and fatigue damage: (S-N) approach, crack initiation and crack growth, life prediction, ΔK testing, crack growth mechanisms, fatigue markings Fractography. Failure analysis, and failure assessment FADs, case studies.