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Some Failures & Studies With Lessons Learned - Fatigue

Some Failures & Studies With Lessons Learned - Fatigue




During this presentation observations on a variety of interesting failures were examined and pertinent engineering lessons highlighted. The failures briefly examined include:

  1. Fatigue assessment of a reduction shaft in a wind turbine for Altamont Pass.
  2. Wind-induced vibration and low cycle fatigue failure of galvanized steel, lighting columns.
  3. Combined low-cycle fatigue and ratcheting test on a 90 degree single mitred pipe bend, subjected to combined bending and internal pressure.
  4. Failure analysis of a pump body.
  5. The Baud Curve … Nature’s way of eliminating stress concentration.
  6. A miscellaneous collection related to the generation of beneficial residual stresses in a dissimilar weld cladding concept, dissimilar brazed joint functional grading concept, thermal autofrettage of dissimilar brazed joint concept, brazed joint edge grinding concept and a possible future fatigue resistant crack repair and strengthening concept.


The presentation reflected on relevant simulation issues as well as engineering lessons.



Note: The recording is only available to NAFEMS members.




For any further questions or copies of the presentation slides, please email Jim directly:-






This webinar was available for free to the engineering analysis community, as part of NAFEMS' efforts to bring the community together online.

About our speaker

Dr Jim Wood


Dr Jim Wood PhD, CEng, FIMechE, FIMMM, FIEIS, NTechF, PSE

Jim has spent most of his working life involved with FEA and pressure vessels in one way or another.

Jim’s undergraduate degree at Paisley College of Technology had a good flavour of the pressure vessel and power generation industry, due to the close vicinity of companies active in this area.

On graduating, Jim joined Babcock & Wilcox as a junior site engineer, erecting a new radiant fired boiler in the BP refinery at Grangemouth, before returning to university to do his PhD on mitred pipe bends.

After becoming an academic member of staff, Jim taught FEA for 10 years on a part-time MSc on pressure vessel design, for local companies.

Later Dr Wood joined the long-standing pressure systems group at Strathclyde University, where he continued with his research and consultancy work in fatigue & buckling, in the power, process plant & pressure-vessel areas. Jim has also ran on-site courses on FEA & DBA both in the UK and abroad.

Jim led the EU-funded CCOPPS project which developed a competency framework for FEA in the power and pressure systems area, along with 2 work-based learning modules designed to focus on these competencies.

Jim has been a member of NAFEMS since its inception, including a member of the Education and Training Working Group since 1997 and the Simulation Governance and Management Working Group since 2005. He is currently a member of council, the PSE board and served on the paper review committees for the NAFEMS World Congresses since 1995.