Measurement integrity
Confirm the transducer, mounting, orientation, location, frequency range and machine operating state before interpreting the result.
Expertise 01
Vibration Analysis
Measurement and diagnostic interpretation for rotating machinery—using overall values, trends and dynamic data as complementary evidence rather than treating any single reading as a complete diagnosis.
Working principleSeverity indicates condition. Diagnosis requires pattern, phase, operating context and corroborating evidence.
Scope of practice
What the work focuses on.
Diagnostic evidence
Use spectrum, time waveform, phase, orbit, shaft centreline, Bode and trend information according to machine design and available instrumentation.
Decision support
Test plausible fault mechanisms, distinguish symptoms from causes and communicate the evidence, uncertainty and recommended next action.
Evidence-led workflow
A disciplined path from question to verified action.
Each stage protects the quality of the conclusion. A technically correct measurement can still lead to a poor decision when operating context, machine design or maintenance history is ignored.
- 01Define the machine and question
Identify construction, bearings, speed, load, process conditions, instrumentation and the decision the data must support.
- 02Acquire representative data
Use repeatable measurement locations and settings while recording the operating condition and any relevant recent work.
- 03Evaluate condition
Review absolute magnitude, change from baseline and applicable machine-specific evaluation guidance.
- 04Test diagnostic hypotheses
Compare spectral components, phase relationships, waveform behaviour and corroborating process or inspection evidence.
- 05Act and verify
Recommend a proportionate response, then confirm the machinery response after corrective work or an operating change.
Standards foundation
Guidance before assumption.
These references establish the public technical foundation. The applicable machine-specific standard, OEM manual and site procedure always take priority for a real assessment.
ISO 20816-1:2016Measurement and evaluation of machine vibration — General guidelinesGeneral measurement, evaluation and operational-limit framework.Official reference ↗ISO 20816-3:2022Industrial machinery above 15 kWIn-situ guidance for applicable coupled industrial machines.Official reference ↗ISO 13373-1:2002Vibration condition monitoring — General proceduresMeasurement methods, parameters, transducers and data collection.Official reference ↗ISO 18436-2:2014Qualification of vibration-analysis personnelTraining, experience and assessment requirements across four categories.Official reference ↗
Public knowledge
Openly shared
- Measurement and signal-processing fundamentals
- General diagnostic reasoning and fault-pattern education
- Standards-aware explanations and non-client examples
Controlled material
Professional access
- Plant-specific spectra, trends and machine histories
- Diagnostic reports, alarm rationales and working templates
- OEM-restricted or client-controlled technical material
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