LEARNING OUTCOMES
After the course the student can:
-Identify the main joining mechanisms within welding technology;
-Address the fundaments of physics of electric arc and metallic transference in electric arc welding;
-Implement an applicability analysis of SMAW + SAW + GTAW + PAW + GMAW + FCAW + LW + EBW + Hybrid joining techniques
-Address the fundaments of solid-state welding techniques and joining techniques for advanced materials: polymers; ceramics; composites;
-Make a weldability analysis based on the welding metallurgy;
-Apply the fundaments of design of welded structures with a focus on static loading conditions
Credits: 5
Schedule: 19.04.2022 - 31.05.2022
Teacher in charge (valid for whole curriculum period):
Teacher in charge (applies in this implementation): Pedro Santos Vilaca da Silva
Contact information for the course (applies in this implementation):
CEFR level (valid for whole curriculum period):
Language of instruction and studies (applies in this implementation):
Teaching language: English. Languages of study attainment: English
CONTENT, ASSESSMENT AND WORKLOAD
Content
valid for whole curriculum period:
Welding technology plays a critical role in almost every industry sector - it is critical to the world's ability to cope with the continuous development demands. Whether joining the smallest bio-implants or welding the world's biggest components, welding makes significant contributions to the global quality and sustainability of life. Welding technologies, whether conventional, or advanced, and welding engineers and operators, are thus vital elements to improved quality of life for all. In fact, there is a huge demand for welders in the industry. Welding is an extremely important component of many industries in Finland and worldwide. In fact, without specialized know-how on welding, many construction projects, bridge building, vehicle manufacturing processes, computer electronics plants, plastics manufacturing, and even our space program would come to a standstill.
In the present course, the fundaments of welding and joining by fusion and solid-state are reviewed preparing the students for the introduction of the most relevant developments and recent innovations in the welding technology. The fundaments on the welding metallurgy and design of welded structures will also be assessed.
Assessment Methods and Criteria
valid for whole curriculum period:
Final Grade =
0.6 X max (final exam grade; special project grade) +
0.2 X continuous evaluation grade from answers to theory seminar questions +
0.2 X continuous evaluation grade from laboratory reports
Workload
valid for whole curriculum period:
Event/action description
#Events or #h/event
#hours
Self-preparation of Seminars
1 h/event
13
Theory Seminars
(workload factor 1:1)
13 events
33
Self-study after Seminar +
Feedback examination of Essays
1,5 h/event
19,5
Essays
9 events; 250 words (0.5~1 page);
1 h/100 words22,5
65 %
Laboratory preparation
0,5 h/event
2
Laboratory/Exercises
(workload factor 1:2)
4 events
8
Laboratory reporting
4 events; 500 words (1~2 page);
1 h/100 words20
22 %
Exam preparation / Feedback
Self-study + Discussion w/ Prof.
14
Exam (written and/or oral)
1 event
3
13 %
TOTAL
135 h
Exam = 17 h (also possible to replace by Special Project for deep learning approach)
DETAILS
Study Material
valid for whole curriculum period:
Main:
-Robert W. Messler, Jr. - Principles of Welding Processes Physics, Chemistry, and Metallurgy (ISBN-13: 978-0-471-25376-1)
-Welded Joint Design (3rd edition), John Hicks. Woodhead Publishing Ltd. 1999 (ISBN-1-85573386-2).
Other:
-ASM Metals Handbook Vol. 6 Welding Brazing and Soldering. 1993. ASM International.
-AWS Welding Handbook Vol. 1 to 4 8th and/or 9th edition. American Welding Society.
-Pedro Vilaça, Wayne Thomas, State-of-the-art in FSW technology . Chapter 4 of book: Structural Connections for Lightweight Metallic Structures . pp. 85-124. ISBN 978-3-642-18186-3, Springer.
-Eurocode 3: Design of steel structures. Part 1-1 (General rules and rules for buildings) and Part 1-8 (Design of joints)
Substitutes for Courses
valid for whole curriculum period:
Prerequisites
valid for whole curriculum period:
SDG: Sustainable Development Goals
4 Quality Education
9 Industry, Innovation and Infrastructure
12 Responsible Production and Consumption
FURTHER INFORMATION
Further Information
valid for whole curriculum period:
Content in-detail:
A - Introduction to welding technology:
- Nomenclature
- Historical Evolution + Welding Processes Short Presentation
- Joining Mechanisms
- Allied Technologies (e.g. cutting, coating and NDT)
B - Electric Arc Physics, including metal Transference in Arc Welding
C - Welding processes:
- Electric Arc Welding Processes (fundaments and variants):-e.g. SMAW: SAW; GTAW; PAW; GMAW; FCAW
- High Power Density Processes: e.g. Laser Welding; Electron Beam Welding
- Resistance Welding: Spot; Seam; Projection
- Solid-State Welding Processes (fundaments and processes): Flash, Stud, High Frequency; Cold Pressure; Ultrasonic; Diffusion; Explosion (Coating and Cutting); Friction Welding;-Friction Stir Welding and Variants
- Soldering and Brasing
D - Joining of Advanced Materials
E - Adhesives Technology for Metals and Polymers
F - Other Joining Techniques for Polymers
G - Cutting and Coating Processes: e.g. Arcair; Oxyfuel; Plasma; Laser; Explosion
H - Fundaments of Welding Metallurgy:
- Welding cycle and characterization of weldability
- Weldability of steels
- Weldability of stainless steels
- Weldability of aluminium and its alloys
- Weldability of other engineering metals
I - Fundaments of design of welded structures (static loads):
- Introduction and Principles
- Stresses in Structures
- Design of Welds and Joints
- Residual Stress and Deformation
Teaching Period:
2020-2021 Spring V
2021-2022 Spring V
Course Homepage: https://mycourses.aalto.fi/course/search.php?search=MEC-E6002
Registration for Courses: In the academic year 2021-2022, registration for courses will take place on Sisu (sisu.aalto.fi) instead of WebOodi.
WebOodi
- Teacher: Vilaca Pedro