Performing materials / metallurgical consulting, testing and analysis, developing solutions to ensure structural integrity – and compliance to Codes including ASTM, AWS, API and ASME.
Materials and metallurgical testing quantifies the properties of metals and is often used to determine whether it conforms to a required specification.
The primary benefits to materials investigations are (1) Ensuring the right materials/ properties for your application, or (2) In conjunction with corrosion and chemical testing – determining the cause of equipment failure.
- Cracks in an Aircraft Landing Gear – chemical, tensile and hardness tests
- Brake Cable Failure in Forklift Accident – fatigue of parking brake cable
- Pitted 316L SS Impellers – corrosion and metallurgical analysis
- Damaged Compressor Bearing – excessive wear on Nickel Carbide seals
- Failed 3rd Stage Blades of a Gas Turbine – SEM used to determine root cause
Metallurgical Failure Analysis
Visual and scanning electron microscopy (SEM) techniques are used to determine metallurgical failures due to manufacturing process problems, defects, contamination and corrosion.
Equipment design life is often compromised through inadequate manufacturing processes such as welding and thermal/ transient conditions – and possibly high temperature environments. At elevated temperatures, creep and component strains occur, especially in welded and bolted joint connections.
Defects often occur in welded, cast and forged parts. Parts with complex geometries often include crack starters, such as metallurgical notch effects – and thus testing is required. Read about the various types of Nondestructive Testing (NDT).
Other metallurgical failures may result from vibration, thermal fatigue, thermal ratcheting, creep, fatigue, and fracture. We have 30+ years experience in engineering design, analysis, and materials science – determining locations of crack initiation sites, probable rates of propagation, modes of failure and fatigue life due to complex sources of dynamic loading.
- Nickel Alloy Steels
- High Temperature Alloys
- Tool Steels
- Stainless Steels
- Carbon Steels
- Alloy Steels
- Aluminum Alloys
- Copper Alloys
- Welded Assemblies
- Pumps & Valves
- Lifting Devices
- Oil/ Gas
- Power Generation
- Pressure Vessels
- Heat Exchangers
Our team of experts come from diverse backgrounds, including power generation, materials & fabrication, fatigue/ failure analysis, and finite element analysis (FEA). FEA is often used along with materials/ metallurgical testing and analysis to identify failure modes.
Interdisciplinary teams are essential for performing most failure analyses, since the root cause is rarely the result of a single variable. Understanding not only the metallurgical properties but also the environmental effects and stresses to a system or component is important in determining the cause of component failure.
Once we identify component failure modes, we perform design modifications to ensure structural integrity and compliance to relevant codes.
Our licensed Professional Engineers and Certified Welding Inspectors provide clients with support across the spectrum of welding and joining challenges – including code compliance, weld and joint inspection, and mechanical testing.
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Materials/ Metallurgical Related Links
>> Our Engineering Team
>> Introduction to Metallurgy
>> Engineering Troubleshooting
>> Introduction to Fatigue Analysis
>> Failure Analysis Services
>> Publications – Heat Exchangers, Pressure Vessels, Fatigue, Weld Applications
>> Links to Engineering Resources