Thermal, mechanical, corrosion, materials/ weld, vibration, and fatigue occur on power and process equipment including pressure vessels, heat exchangers, piping and compressors. We provide engineering troubleshooting and repair solutions, keeping our clients compliant to AWS, API, ASME and other Codes – enabling them to save time, reputation, and reducing life cycle costs.
We were asked to investigate the failure of a splined clutch power transmission shaft. This macrophotograph at 7x shows a broken tooth with simultaneous fatigue initiation at the root radius of each side of the tooth. Reverse loading ultimately lead to fatigue fracture.
Materials & Weld Engineering
To ensure continued reliable service, we provide materials & weld testing and analysis. Mechanical testing provides ductility, strength, toughness, corrosion resistance, and fatigue properties of the as-fabricated materials. Such testing assists in the prediction of when and how materials and assemblies will fail under various loading conditions.
Our weld engineering services include joint analysis and procedure development and qualification, as well as investigating non-conformance and Code compliance – providing assistance assistance to keep you in accordance with AWS, ASME and other relevant Codes.
A few examples include:
- Heat Exchangers
- Pressure Vessels
Our troubleshooting services include a full spectrum of metallurgical testing including corrosion investigations, surface condition studies, mechanical and fracture mechanics testing. Read more about Metallurgy or Corrosion.
- Chemical and Mechanical Analyses
- Metallographic Examination
- Fractography (SEM and TEM)
- Accelerated Testing of Failure Modes
- Corrosion Testing
Fatigue/ Fracture Analysis
Fatigue is one of the key contributing factors to the degradation of aging components. Fatigue failures occur when these structures are subjected to cyclic stresses and strains over time. This leads to the development of micro-cracks in the most highly strained locations, which subsequently propagate until the component fails. Read Introduction to Fatigue.
Fracture mechanics studies the propagation of cracks in materials and the material’s resistance to fracture. Analysis is done to determine residual strength in structures, develop recommended inspection cycles, and to determine repair urgency when new cracks are discovered in an existing system.
We perform fatigue and fracture analysis – and provide practical repair solutions to keep you fully operational.
Often, various technical issues may reach litigation. We provide forensic engineering services to predict how components have failed – providing results that are easily understood by Judges and Juries.
Give us a call – let’s talk about your needs.
>> Materials/ Metallurgy Consulting
>> Weld Troubleshooting/ Consulting
>> Links to Engineering Resources
>> Publications – Heat Exchangers, Pressure Vessels, Fatigue, Elevated Temperature
Learn from the experience of others. Especially when one such “other” is Dr. William O’Donnell, PhD, PE, Founder and President of O’Donnell Consulting Engineers, Inc., and ASME “Engineer of the Year” – his 50 years of experience in analysis of components including fatigue and fracture safety evaluations and failure analyses are now comprised in this volume.
If you are interested learning more in Engineering Design, Manufacturing and Construction, as well as Failure Analysis, then this book is a must have!
* Does not include shipping, handling or tax