Course syllabus

# Brottmekanik, fortsättningskurs Fracture Mechanics, Advanced Course

## FHLN25, 7,5 credits, A (Second Cycle)

Valid for: 2017/18
Decided by: PLED M
Date of Decision: 2017-04-05

## General Information

Elective for: BME4, F4, M4-bem, Pi4
Language of instruction: The course will be given in English

## Aim

The purpose of the education is to provide the need for fracture mechanical competence to judge risk for failure and to compute stiffness reductions due to cracks. The aim is that the student should gain knowledge of linear and non-linear fracture mechanics and to serve as an industrial resource with the ability to analyze failures, suggest models for calculation and suggest structural improvement of engineering structures.

## Learning outcomes

Knowledge and understanding
For a passing grade the student must

• understand and be able to explain basic fracture mechanical concepts and have knowledge of ongoing fracture mechanical research.
• understand the principles behind the derivation of the most common fracture mechanical theories focusing on judgement of risk of failure.
• be able to explain stress intensity factors and J-integral methods.
• be able to explain the foundation of non-linear fracture mechanics.
• be able to propose engineering solutions that increase the reliability of a structure regarding risk of fracture and fatigue.

Competences and skills
For a passing grade the student must

• demonstrate knowledge of a quality sufficient for participation in a research and advanced development project in fracture mechanical or similar projects.
• be able to examine, identify and analyze the mode of failure given a fractured structure or structural member and be able to propose a structural improvement or modification of an existing structure.

Judgement and approach
For a passing grade the student must

• understand the possibilities and limitations of different fracture mechanical models.

## Contents

Crack tip solutions, displacements of fracture surfaces. Stress and strain fields and path-independent integrals. Basic tensor algebra. Concepts of dissipated energy, stiffness reduction and compliance methods. Materials testing, test specimens for fracture mechanical testing. Limits of linear fracture mechanics, stress intensity factors and fracture toughness. Fatigue, Paris' law, non-linear fracture mechanical concepts and computational fracture mechanics .

## Examination details

Grading scale: TH - (U,3,4,5) - (Fail, Three, Four, Five)
Assessment: Written examination. In the case of less than 21 registered students the examination may be given in oral form.

The examiner, in consultation with Disability Support Services, may deviate from the regular form of examination in order to provide a permanently disabled student with a form of examination equivalent to that of a student without a disability.