20
February 2018

Fracture Mechanics-Based Fatigue Analyses

Status: Advanced registration is now closed. A limited number of registrations will be accepted at the door.
Date: Tuesday, February 20, 2018
Time: 8:00 AM-8:30 AM: Registration and Continental Breakfast
8:30 AM-4:30 PM: Fracture Mechanics Based Fatigue Analyses
Location: Sheraton Vancouver Airport Hotel 7551 Westminster Hwy Richmond, BC V6X 1A3
Presenter: Dr. Grzegorz (Greg) Glinka, MSc, PhD, DSc
Professor, Department of Mechanical and Mechatronics Engineering, University of Waterloo
Credit: 7 Formal Professional Development Hours (PDH)
Cost: Early Bird Price Engineers and Geoscientists BC Member: $419.00 + GST = $439.95 until Feb 6, 2018

Engineers and Geoscientists BC Member and EIT/GIT Regular Price: $499.00 + GST = $523.95

Non-Member Price: $499.00 + GST = $523.95

Student Member Price: $249.50 + GST = $261.98
Please Note: *A minimum number of registrations are needed by February 06, 2018 to proceed with this seminar. Please register early to avoid cancellation.
**All prices are subject to applicable taxes.
Contact: Shirley Chow | Professional Development Coordinator
Direct: 604.412.4865
Toll Free: 1.888.430.8035 ext.4865
Fax: 604.639.8180
Email: [email protected]
Note:

Sheraton Vancouver Airport Hotel is pleased to offer a special corporate rate of $175 per night plus tax (including parking and guest room Wi-Fi). The corporate rate will only be available until February 13. This rate is subject to change depending on the hotel's occupancy.

Booking Procedures:

1. Email In-House reservations at [email protected]

2. Call In- House reservations at 604-273-7878 ask for IN-HOUSE reservations (Monday to Friday 8am-5pm)

The hotel provides complimentary regular shuttle service from to the main terminal. If you need shuttle service from the airport, call the hotel from the display board in baggage claim areas of the airport. You can also call the hotel directly at 800-663-0299 or 604-273-7878 and request a pick up. Please wait for your shuttle at the designated area.

Complimentary parking is included and you need to register your license plate upon arrival at the front desk.

We will be discussing the basics of the fracture mechanics theory, the derivation of all input data necessary for fracture mechanics analyses and their physical meanings, general rules concerning the static strength analysis of cracked bodies, and fracture mechanics based fatigue analyses. The course will be concluded with failure analysis of several mechanical and structural cases encountered in practice.

Seminar Description

Estimation of fatigue lives of machines and structures is a major concern with regards to service safety and costs. Numerous analytical techniques are available and can be used with varying degrees of success; however, many questions still arise. Which methodology is best suited for which application? How to define the correct inputs for a specific technique? How can the structure be improved to meet the service conditions? This seminar will address these questions from the fracture mechanics perspective—relatively young branch of material science and mechanics.

Any fracture analysis or fatigue life estimation procedure consists of three main areas that are used to input the data and carry out the analysis:

  • Loading/stress history,
  • Material properties, and
  • Geometry of analyzed mechanical component or engineering structure.

The basics of the fracture mechanics theory, the derivation of all input data necessary for fracture mechanics analyses and their physical meanings will be discussed in the first part of the course.

Secondly, the general rules concerning the static strength analysis of cracked bodies will be briefly discussed in order to make an analyst aware of differences between the static and fatigue failure processes and stress parameters used in such analyses. Particular attention will be devoted to the nature of stress parameters used in fatigue analyses (i.e., stresses normal to the potential crack plane, stress distributions, and Stress Intensity Factors). Various methods of calculating Stress Intensity Factors for notched and welded components will be discussed and illustrated with practical examples.

Finally the Fracture Mechanics-based Fatigue Analyses (da/dN - ∆K) will be discussed including the calculation of appropriate Stress Intensity Factors for cracks in geometrically complex machine components, evaluation of the residual stress effect, evaluation of the weld geometry and the effect of their scatter on the predicted fatigue life. Among others the weight function technique, particularly useful for calculating Stress Intensity Factors for non-classical crack problems, when combined with the Finite Element Stress Data will be presented. A technique for the fatigue crack growth analysis of planar irregular cracks in nonlinear stress filed will be discussed and the possibility for its application for the fatigue analysis of small inclusions or/and material imperfections.

The course will be concluded with failure analysis of several mechanical and structural cases encountered in practice.

Learning Objectives

  • Basic concepts of the fracture mechanics methodology.
  • The meaning and determination of stress intensity factors.
  • Stress concertation and stress intensity factors for cracks in weldments.
  • Fatigue crack growth theories.
  • Analysis of fatigue cracks growth in weldments, and
  • Geometrical and residual stress effects.

Prerequisite

Basic courses on mechanics of materials and stress analysis, material science.

Target Audience

The seminar is particularly relevant to people involved in design, optimisation, and fatigue assessment of steel structures and machinery components. Therefore, the attendance is recommended to designers, structural engineers, mechanical engineers, fabricators, welding engineers, quality control, maintenance and inspection personnel, university lecturers, students, and researchers.

The seminar might be useful to the following industry sectors: steel construction, infrastructure fabrication and maintenance, bridge building, transport industry, power generation, machinery, shipbuilding, maintenance and aviation industry, ground vehicles, and earth moving machinery.

Presenter

Dr. Grzegorz (Greg) Glinka, MSc, PhD, DSc

Professor, Department of Mechanical and Mechatronics Engineering, University of Waterloo

Dr. Glinka has been with the University of Waterloo, Ontario, Canada since 1989. He was a Post-Doctoral Fellow at The University of Iowa (USA) in 1978 and has also lectured at the University of Metz, France and at the University College London, England. He holds a PhD and D.Sc. from the Warsaw University of Technology. He has also acted as an expert of the United Nations and visiting professor at The Aalto University in Helsinki, Finland. Dr. Glinka is a specialist in fracture and fatigue of steel structures and mechanical engineering machinery. His research interests include fracture of materials, fatigue of structures, multiaxial fatigue and creep of engineering materials, computer aided design, FEM-elastic-plastic stress-strain analysis, and reliability. His recent research activities concern modeling of fatigue crack growth under random loading and fatigue optimization of welded structures. Dr. Glinka has published over 190 related articles in technical journals and textbooks.



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