Once equipment or structures are placed into service, the real-world often kicks in. When this happens, behavior often diverges from design and performance expectations. Industrial equipment that passes post-manufacturing inspections can begin to exhibit vibration, noise, fatigue, cracking, or degraded performance after installation or field usage.
In many cases, the user only knows that a problem exists and the root cause of the issue(s) must be identified and corrected in the field. Industrial fans and turbines, plant equipment, large mining machinery, offshore generators, and the structures that support them cannot be moved into a laboratory. So, problem-solving must be brought to where such equipment operates, many times in remote, harsh, or tightly constrained environments.
The Challenge of Field-Based Problem-Solving
Field environments introduce limitations that do not exist in the comfort of test facilities. Access is often restricted, downtime is costly, and environmental conditions such as temperature, moisture, contamination, or access complicate diagnosis. Assets may need to remain in operation while issues are investigated, leaving little margin for extended analysis.
Digital diagnostics and condition monitoring systems can indicate abnormal behavior, but they are typically built on assumptions established during design or commissioning. When real operating conditions violate those assumptions, analytics may identify that a problem exists without explaining why. Physical testing provides a direct way to observe how equipment and structures respond under real conditions.
Physical Testing as a Problem-Solving Tool
With equipment in the field, the goal is generally to isolate root causes and guide corrective action. Targeted vibration and structural response testing can distinguish mechanical issues from electrical ones, identify resonance shifts caused by loosened connections or structural degradation, and reveal whether repairs or modifications have altered system dynamics. This capability is essential when dealing with large or complex assets where trial-and-error fixes are impractical, expensive, or risky.
By measuring how a system responds to excitation, physical testing replaces assumptions with evidence.
Problems Testing Reveals in the Field
Many field issues stem from subtle changes in mass, stiffness, or damping that are difficult to detect visually. Foundation settling, fatigue cracking, corrosion, transport damage, or assembly variation can all change dynamic behavior in ways that accelerate wear or create unacceptable vibration.
For rotating equipment even small resonance shifts can quickly lead to performance degradation or failure. For large structures, changes in boundary conditions or joint stiffness can amplify loads and introduce unexpected stress paths. Modal and vibration-based testing can identify these changes early, often before visible damage appears.
Solving Problems Where They Occur
Effective field-based problem-solving is often rooted in experience. Because they pioneered testing best practices and processes, Six D engineers know what it means to arrive on site with a solution in hand. This transforms field problem-solving into a structured, evidence-based process reducing downtime, guiding targeted corrections, and improving long-term reliability.