*VIRTUAL* – Fatigue and Fracture Mechanics

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Online Fatigue and Fracture Mechanics Training


Following a general introduction to fatigue and fracture, with examples of service failures, current and developing fatigue design and assessment methods will be described. The course will go on to explain the importance of crack/flaw analysis in structural design and safety assessment and illuminate its wide range of applicability. It will give a deep understanding of the major results and criteria underpinning modern fracture mechanics, the assumptions behind them and important limitations. Attendees will gain a better understanding of material selection for fatigue and fracture resistance and learn about codified procedures for flaw evaluation.
The course will introduce fundamental concepts of Engineering critical assessment / Fitness for service assessments; from stress intensity factor, CTOD and J-integral to methods of measuring and calculating fracture toughness for use in the ECA assessment. The fracture and fatigue crack growth assessment methodology of BS 7910 shall be presented and illustrated with examples


Engineers and scientists involved in the design, operation and assessment of both onshore and offshore structures.



Day 1:

8am-9.30am Lecture 1: Introduction and fatigue S-N Curve
– Fatigue mechanism of materials and welded structures
– Fatigue design principles
– Fatigue damage models
– Uncertainties in fatigue damage prediction
– Major factors affecting fatigue life
– Origin of SN curve & Fatigue test
– SN curve for welded structural details

9.30am -9.45am Break

9.45am-11.15am Lecture 2: Major factors affecting fatigue
– Definition of stress concentration factor (SCF)
– Methods for assessing SCF
– Stress concentration at welds
– Finite element modelling for SCF
– Simple Mean Stress Models & Strain-Life Based Models
– Mean Stress Effects in Welded Structures
– Effect of Plate Thickness and Material Strength on Fatigue Resistance
– Impact of corrosion on fatigue resistance

11.15am -12pm Break

12pm-13.30pm Lecture 3: Rules for Fatigue design of Welded Structures
– Fatigue assessment process
– Assessment of local stress in structural details for fatigue analysis
– Hot-spot stress approach
– Notch stress approach
– Design SN curve
– Linear damage accumulation law (Minor’s rule)
– Fatigue damage model under random loads

Day 2

8am – 9.30am Lecture 4: Fundamentals of Fracture Mechanics
– Fracture Mechanics: Basic concepts
– Stress intensity factor, J-integral, CTOD
– Limitations and approaches
– Mechanisms of fracture (brittle, ductile, fatigue)

9.30am-9.45am Break

9.45am -11.15am Lecture 5: Fracture toughness concepts
– Definition of fracture toughness
– Ways to measure fracture toughness (ISO 12135)
– CTOD testing
– Charpy testing and correlations
– Weakest link master curve approach
– J-R tearing curves

11.15am- 12pm Break

12pm – 13.30pm Lecture 6: Engineering Critical assessment
– Introduction to the concept
– Failure assessment diagram for fracture
– Fatigue crack propagation
– BS 7910 approach key steps

Day 3

8am-9.30am Lecture 7: Tutorial on fatigue (SN) design examples
– The tutorial will aim to illustrate the application of key fatigue concepts in S_N fatigue design such as weld classification, use of hot spot stress and damage summation to determine fatigue life using tubular joint

9.30am-11am Lecture 8: Tutorial on fracture mechanics application examples
– The tutorial will aim to illustrate key concepts of fracture mechanics in application of crack propagation by fatigue crack growth and in determination of the limit state to avoid fracture using a structure with a crack


Dr Bostjan Bezensek

Dr.Bezensek holds an undergraduate degree in Mechanical Engineering from University of Maribor, Slovenia and a Doctor of Philosophy degree in fracture mechanics and failure assessment from University of Glasgow, Scotland, UK. He is a Chartered Engineer and member of British standard BS 7910 committees since 2008.
Dr.Bezensek has over 15 years of experience in structural integrity assessments with emphasis on fatigue and fracture of corrosion and crack like defects. His early career focused on the nuclear application and he was a member of the ASME Section XI working group on pipe flaw evaluation as well as contributing to the UK’s R6 programme.
In recent years his focus is on the petrochemical (Oil & Gas) sector. He is the subject matter expert on the ECA (Engineering Critical Assessment) for
delivery of subsea pipelines in Royal Dutch Shell group and leader in the fitness for service support to upstream and downstream asset.


• Atkins, UK
• Apollo, UK
• BAE Systems, UK
• Bayards, Netherlands
• Cadent, UK
• Combifloat Systems BV, Netherlands
• Conoco Phillips Oil and Gas, UK
• Crondall Energy, UK
• EDF Energy, UK
• Lloyds Register, UK
• Malin Group, UK
• Navantia, Spain
• Petrofac, UK
• Royal Roos, Netherlands
• Schlumberger, Netherlands
• Shell, UK
• TUV Reinland, Germany
• Ventient Energy, UK


Duration: 3 Days

Cost: £550 + Vat



Online Fatigue and Fracture Mechanics Training

Fatigue and Fracture Mechanics Online Training Course

Virtual Fatigue and Fracture Mechanics Training

Fatigue and Fracture Mechanics Virtual Training Course


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