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Cost £0 Type of course in situ Online booking Book online for this course Course provider Cranfield University Course overview This course will cover: To provide an understanding why materials and structures fail and how failure conditions can be predicted in metallic and non metallic components and structures. Course description General introduction overview of failure behaviour of cracked bodies; the influence of crack size, brittle behaviour; ductile behaviour; influence of material properties; cyclic loading and chemical environment. Energy approaches to fracture thermodynamic criteria and energy balance- Griffith approach - application to glass- modifications by Orowan, srain energy release rate, compliance, applications to fibre composites, stress requirements for fracture; the work of Inglis, Airy and Westergaard. LEFM and crack tip stress fields, stress intensity factors and their relation to strain energy release rate; crack tip plasticity, plane stress and plane strain; constraint; conditions for validity of LEFM and equivalence of G and K; fracture toughness in metallic materials; fracture toughness testing; calculations of critical defect sizes and failure stress, stress concentration at crack tip. Beyond the limits of LEFM crack tip plastic zones - modification of the stress fields, plane stress and the R curve; the HRR field; CTOD, J; elastic- plastic failure criteria; defect assessment. Failure assessment diagrams. Polymer composites return to application of fracture mechanics to polymer composites - use of small specimen data in composite structures. LEFM and fatigue crack growth, crack extension under cyclic loading; the Paris law; regimes of fatigue crack growth; influence of material properties; crack tip plastic zones in fatigue; calculation of crack growth life and defect assessment in fatigue; crack closure and variable amplitude loading; short cracks and the limits of LEFM; software design tools for fatigue crack growth. LEFM and chemical environments- static loading-stress corrosion cracking; cyclic loading and corrosion fatigue. On successful completion of this course the delegate will: Be familiar with the different regimes and processes of failure of cracked bodies and to understand the factors controlling them and the boundaries and limits between them. Know and understand the principles of linear elastic fracture mechanics (LEFM) and their application to cracks in brittle, ductile and fibre composite materials in. Calculation of static failure conditions. Be able to calculate the limits of applicability of LEFM and to apply modified predictive tools such as elastic-plastic fracture mechanics for calculation of failure conditions. Know and to apply fracture mechanics to failure of cracked bodies under cyclic loads and under aggressive chemical environments to predict service lives. Be able to generate laboratory fracture mechanics data; to be able to critically assess its validity for application to particular engineering situations. To book on this course please contact: Academic Operations Unit. Cranfield University Cranfield Bedfordshire MK43 0AL, UK T: +44 (0) 1234 754176 E: shortcourse@cranfield.ac.uk F: +44 (0) 1234 751206 W:http://www.cranfield.ac.uk/short/ Cranfield University reserves the right to change course dates as appropriate. Building 45 Cranfield Bedfordshire MK43 0AL United Kingdom Visit website Telephone: 0044 (0)1234 754086 Fax: 0044 (0)1234 754109 |
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