Virtual Learning


Analysis of failures in welded assemblies

Identifying the causes of welded assembly defects and failures, leveraging experience and feedback, and defining corrective and curative actions (in repair, design or manufacturing).


Upon completion of the course, participants will be able to do the following:

  • Identify various weld defects
  • Identify various types of welded assembly damage
  • Identify various repair and/or redesign options to improve welded assemblies


29th Nov – 2nd Dec 2022 (Tue – Fri)


15h15 – 19h00 (GMT+8) Singapore / 08h15 – 12h00 (GMT+2) Paris


General knowledge of welding and metallurgy is required.

Pedagogical Means

Technical presentation alternating theory, case studies, numerous concrete examples and visit of Cetim’s failure analysis tools, enriched by discussion and questions from the trainees.

Who should attend:

This course is designed for personnel from the design, methods, production, maintenance and quality departments as well as any other employees who deal with welded assembly defects.

Course outline:

  • The necessary vocabulary and terminology for detailed description of welded assemblies.
  • Failure analysis methods.
  • Using illustrations of weld damage (welding defects, mechanical failures, corrosion):
    Identification of the causes:

    – Welding defects: cold cracks, hot cracks, lamellar tearing;

    – In-service failure: mechanical action, fatigue, creep;

    – Corrosion: pitting, stress, cavitation.

    Defining immediate corrective actions and curative actions.

  • Real-world case studies of welded assembly failure: trainees examine welded parts with defects to determine the causes and recommend appropriate corrective or curative measures.
  • Capitalization on results.
  • Visit of Cetim’s failure analysis tools and equipment: mechanical testing, optical metallurgy, electron microscopy.


This course will be carried out by Mr. Samuel Cretin, a technical expert of the welded joints.


Samuel CRETIN works in the field of welded joints.
Its areas of expertise are:
- Design and calculation of welded joints
- Welding metallurgy
- Welding and brazing processes
- Industrialization, manufacturing and control of welded and brazed

Areas of Expertise

Design and redesign of assemblies:
– Analysis of the design considering the different modes of mechanical stress (static, dynamic and cyclic)
– Proposals for improvement solutions in the design, production and execution of welded joints
– Choice of materials for welding

Failure analysis and expertise:
– Determination of the causes of assembly failures
– Proposals for preventive, corrective and curative solutions

Feasibility studies and industrialization, technical and economic expertise
Choice of processes:
– Definition of conditions for implementation and integration into production,
– Qualification of operating modes
– Specific product / process developments

Diagnosis and inspection of welded and brazed structures:
On-site interventions for diagnosis of assemblies and inspections according to different standards



Welding Institute (1997-2001): Inspector and Technical Expert

CETIM (since 2001): Technical Expert and Manager of the Assembly technologies department in Nantes


Welding Engineer (ESSA graduate) – IWE

Materials Engineer (Polytech Nantes)


Course Name

T55: Analysis of failures in welded assemblies

Course Date:

29th Nov – 2nd Dec 2022 (Tue – Fri)


15h150 – 19h00 (GMT+8) Singapore / 08h15 – 12h00 (GMT+2) Paris
Total 15 hours

Closing Date:

16th Nov 2022, Wednesday

Course Fee:

SGD 1,500.00 OR EUR 910.00 OR USD 1,120.00 per person (exclude GST)

Early Bird:

Registration must reach us on or before 2nd Nov, Wednesday:
SGD 1,350.00  OR EUR 820.00 OR USD 1,010.00 per person (exclude GST)

We welcome groups to attend our trainings. Please contact us for a group discount package.

Our Accounts will advise if GST is applicable. Participants shall bear all bank charges.
Learners must fulfill at least 75% attendance and pass all assessment components, to be awarded with a Certificate of Attendance (COA).

For clarification or inquiries please contact Ms. Pei Shyan NG or Joshua Lee at +65 67788285 or send an email to

Registration Form

To register for the course, please complete this form.

Payment Details:

  • Registration form and course fees are to reach MATCOR before the closing date.
  • Registration will only be confirmed upon full payment.
  • Direct internet banking payment to MATCOR Technology & Services Pte Ltd, Bank: Development Bank of Singapore, Bank Code: 7171, Branch Code: 032, Swift Code: DBSSSGSG, Bank Address: 1 Kim Seng Promenade, #02-32, Great World City, Singapore 237994, Account / Iban No: 032-004152-3. / PAYNOW: UEN199201190R
  • All cheques should be made payable to “MATCOR Technology & Services Pte Ltd” and mailed to 3 Seletar Aerospace Link Singapore 797550, Or
  • Overseas participants may choose to pay in EUR or USD.
  • Participants shall bear all bank charges for payments.

For clarification or inquiries please contact Ms. Pei Shyan NG or Joshua Lee at +65 67788285 or send an email to

Cancellation & Refund:

  • Any cancellation made after closing date – no refund, but delegate substitution is allowed.
  • Any cancellation made before closing date will receive full refund.
  • MATCOR reserves the right to cancel or reschedule the course, only if deemed necessary