Mechanisms, Impact on Structural Integrity, and Mitigation Techniques
PRESENTER: PROFESSOR PINGSHA DONG
University of Michigan, Ann Arbor, Michigan, USA
This eCourse will present how residual stresses and distortions are developed during fusion and solid-state welding, and related manufacturing processes, including metal 3D printing and additive manufacturing (AM). Simple analytical models will first be used to describe the underlying mechanisms, and computational modeling results will then be used to demonstrate the relevance of these analytical results for deriving effective solutions to various residual stress and distortion problems experienced by various industry sectors, including aerospace, automotive, heavy equipment,
and shipbuilding.
Then, the principles for residual stress and distortion mitigation techniques will be discussed and illustrated with various real-world applications. In addition, how residual stresses and distortions affect components’ structural performance (e.g., fatigue capacity) will be discussed, including how to effectively treat their effects in structural integrity evaluation, based on the most recent research findings.
Who Should Attend?
Designers, structural engineers, consultant engineers, mechanical engineers, maintenance and quality control engineers, as well as researchers. Delegates are encouraged to bring along their design problems to contribute to discussions and local case studies.
What Industry Areas The eCourse Is Relevant For?
The eCourse will be especially relevant to all professionals in automotive, aerospace, steel construction, bridge design, power generation, naval and shipbuilding, pipeline and other industries that apply welding.
eCourse Programme
This live eCourse will include 2 x 4 hour sessions including Q&A. The eCourse will be hosted via MS Teams/Zoom, with login details supplied upon registration.
Part 1: Residual stress and distortion development mechanisms (4 hours)
- Some well-documented residual stress and distortion examples and new challenges
- Residual stress development mechanisms – A:
- Basic thermo-mechanical descriptions
- 1-bar model and graphic solution method
- Engineering implications
- (15 minute break)
- Residual stress development mechanisms – B:
- 3-bar models
- n-bar models
- Treatment of moving heat source and experimental validations
- Distortion mechanisms
- Plastic zone versus shrinkage zone
- Determination by experimental and numerical methods
- Shrinkage modes versus distortion types observed in practice
Part 2: Principles of mitigation techniques, applications and structural integrity (4 hours)
- Principles of distortion control technique and mechanics basis
- Shrinkage zone based – single-weld components
- “5S” principles – multiple welded components
- Application examples
- (15 minute break)
- Effects of residual stresses on structural performance
- Static load capacity and fracture control
- Fatigue capacity
- Residual stresses in weld repairs and mitigation techniques
- Intrinsic repair weld residual stress characteristics
- Mitigation by repair weld design and other methods
- Course summary and Q/A
Earn PDHs and CEUs with our Professional Development eCourse
Upon completion of the 2 eCourse modules, the attendees will receive an electronic Course Completion Certificate that might be used to claim PDHs or CEUs.
EVENTS FOR AMERICAS
| Course part | Course date | Location / time zone / starting time |
| 1 | 29 March 2022 | Toronto/Michigan (EST): 9:00 am – 1:15 pm Calgary & Edmonton (MST): 7:00am – 11:15 am Regina (CST): 7:00am – 11:15 am West Coast Canada and USA (PST): 6:00 am – 10:15 am Atlantic Canada and USA: 10:00 am – 2:15 pm Sao Paulo: 10:00 am – 2:15 pm Brazil: Santiago Chile (GMT): 10:00 am – 2:15 pm |
| 2 | 31 March 2022 |
Registration link: https://www.eventbrite.ca/e/residual-stresses-and-distortions-session-2-of-3-tickets-253267298307
EVENTS FOR AFRICA AND EUROPE
| Course part | Course date | Location / time zone / starting time |
| 1 | 29 March 2022 | Johannesburg-CET: 3:00 pm – 7:15 pm Nigeria-London: 2:00 pm – 6:15 pm Istanbul: 4:00 pm – 8:15 pm India & Sri Lanka: 6:30 pm – 10:45 pm Bangladesh: 7:00 pm – 11:15 pm Saudi Arabia, Oman, Kuwait, Bahrain: 4:00 pm – 8:15 pm UAE- Dubai, Sharjah, Abu Dhabi: 5:00 pm – 9:15 pm |
| 2 | 31 March 2022 |
Registration link: https://www.eventbrite.ca/e/residual-stresses-and-distortions-session-2-of-3-tickets-253267298307
EVENTS FOR ASIA AND AUSTRALASIA
| Course part | Course date | Location / time zone / starting time |
| 1 | 3 May2022 | Auckland: 2:00 pm – 6:15 pm Sydney: 12:00 pm – 4:15 pm Perth: 10:00 am – 2:15 pm Singapore: 10:00 am – 2:15 pm Bangkok: 9:00 am – 1:15 pm Seoul: 11:00 am – 3:15 pm Tokyo: 11:00 am – 3:15 pm |
| 2 | 5 May 2022 |
Registration link: https://www.hera.org.nz/event/residual-stresses-and-distortions-ecourse/2022-05-03/#1563309554764-feaba061-58b5
EVENTS FOR SAARC AND MIDDLE EAST
| Course part | Course date | Location / time zone / starting time |
| 1 | 3 May2022 | India & Sri Lanka: 8:00 am – 12:15 pm Bangladesh: 8:30 am – 12:45 am Saudi Arabia, Oman, Kuwait, Bahrain: 5:30 am – 9:45 am UAE-Dubai, Sharjah, Abu Dhabi: 6:30 am – 10:45 am |
| 2 | 5 May 2022 |
Registration link: https://www.hera.org.nz/event/residual-stresses-and-distortions-ecourse/2022-05-03/#1563309554764-feaba061-58b5
Cost
The course registration fee per participant is $500.00 payable in US dollars or the equivalent amount in the regional organizer’s local currency.
Participants will receive a set of notes for each course part in pdf format.
Cancellations
Please Note: cancellations within seven (7) working days of the start of the events, 100% of the fees will be charged. Replacement delegates may be sent however in lieu of those cancelled. The organizers reserve the right to cancel the courses due to insufficient registrations or other reasons beyond their control, as well as altering the programme if they deem it necessary. The organizers have the right to refuse registrations.
Future WIN eCourses to be held in 2022 with Prof Pingsha Dong
“Advanced Fatigue And Fracture Analysis Methods”
Dates to be advised after May 2022
Upon completion of the 2 eCourse modules, the attendees will receive an electronic Course Completion Certificate that might be used to claim PDHs or CEUs.