Introduction to Welded Joints     

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I.D.# C1343Printable Description
Duration: 2 Days
May 18-19, 2015 (8:30 a.m. - 4:30 p.m. ) - Troy, Michigan  
November 9-10, 2015 (8:30 a.m. - 4:30 p.m. ) - Troy, Michigan  

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Welding is one of the most important and widely used of the joining processes, providing distinct advantages in mechanical performance, ease of implementation, cost and adaptability. This seminar will provide engineers with applicable knowledge related to metallurgy, stress analysis and welding processes which will enable them to consider design, analysis, implementation and inspection of welds for their respective products. The course will cover the fusion operation of welding involving casting, heat treatment and metallurgical processes as well as additional complexities such as residual stress and distortion, introduction of various defects and sensitivity of materials, considerations related to static strength, fatigue behavior and resistance to corrosion. The primary focus of the seminar will be arc welds, but there will also be discussion of other welding processes important to the mobility industry including resistance spot, laser and friction stir. The seminar will make extensive use of case studies and will discuss appropriate codes and standards.

Learning Objectives
By attending this seminar, you will be able to:

  • Identify the various welding processes and describe potential applications
  • List the key factors that impact the performance of welds
  • Explain why the various factors impact performance of welds
  • Describe for a given weld (process, geometry, material) which of the key factors are critical
  • Define the procedure and simplifying assumptions used to analyze a weld for static strength
  • List the various non-destructive evaluation methods and select the appropriate method for a given application
  • Evaluate a weld and identify the factors impacting fatigue performance
  • Describe the various methods used to analyze a weld for fatigue performance

Who Should Attend

This seminar is intended for any engineer dealing with one or more of the many aspects of welds: design, analysis, specification, manufacturing, quality assurance, training, repair and maintenance.

Prerequisites

The participant needs little if any exposure to welding technology. The participant should have the standard undergraduate courses in material science and stress analysis.

Topical Outline
DAY ONE

  • Arc Welding Processes
    • TIG, GMAW, SAW, etc.
    • Strengths, weaknesses, typical applications
  • Overview of Key Considerations
    • Description of the casting process
    • Weld as a thermal gradient
    • Weld can change microstructure
    • Weld can introduce defects
  • Engineering Properties of Welds
    • Strength and ductility
    • Hardness
    • Toughness
  • Welded Connection
    • Types of joints
    • Considerations: weldability, strength and inspection
  • Material Considerations
    • Mild steel
    • Medium and high strength steel
    • Stainless steel
    • Aluminum
  • Residual Stress and Distortion
    • Sources of residual stress
    • How to minimize distortion
  • Source of Defects and Cracking
    • Porosity and inclusions
    • Undercut, lack of fusion and lack of penetration
    • Hot and cold cracking
    • Hydrogen damage
    • Methods to limit defects
DAY TWO
  • Failure Modes, Static, Fatigue and Fracture Considerations
    • Design for Static Strength
    • Basic principles
    • Codes and Standards
    • Loading of the joint
    • Determining weld size
  • Fracture Mechanics
    • Causes of brittle behavior
    • Behavior of sharp notches
    • Overview of Fracture Mechanics
    • Analysis of welds
  • Non-Destructive Inspection
    • Methods, application and limitations
  • Fatigue Considerations
    • Overview of fatigue mechanism
    • Improving fatigue behavior of welds
    • Analysis methods: global and local approaches
  • Other Welding Processes
    • Resistance spot, laser and friction stir
    • Description of method, limitations and applications

Instructor(s): Jess J. Comer
Dr. Jess J. Comer has significant teaching experience in the areas of machine design, dynamics of machines, metal fatigue and failure analysis. He is co-author of the text "Fundamentals of Metal Fatigue Analysis" and is a registered Professional Engineer in South Dakota. Dr. Comer is a member of SAE, ASME and ASEE. He holds a B.S. and an M.S. in mechanical engineering from South Dakota School of Mines and a Ph.D. from the University of Illinois at Urbana-Champaign.

Fees: $1275.00 ; SAE Members: $1020.00 - $1148.00

1.3 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

To register, click Register button at the top of this page and submit the online form, or contact SAE Customer Service at 1-877-606-7323 (724/776-4970 outside the U.S. and Canada) or at CustomerService@sae.org.

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