Vibration Diagnostic Matrix | ISO 13379 | Fault Identification

Published by Nikolai Shelkovenko on

Free Engineering Tool

Vibration Diagnostic Matrix

Select observed vibration symptoms to identify probable faults ranked by confidence level. Based on ISO 13379 pattern matching and industry experience.

ISO 13379 Pattern Matching 15+ Fault Types
Select Observed Symptoms

Probable Faults

How This Tool Works

Each fault type has a characteristic vibration “fingerprint” — a specific pattern of symptoms. This tool uses a weighted scoring system to match your selected symptoms against known fault patterns and ranks them by confidence.

The confidence percentage indicates how well the selected symptoms match the typical pattern for each fault. Higher confidence means more symptoms match.

Quick Reference: Common Fault Patterns

FaultKey IndicatorsDirection
UnbalanceHigh 1×, proportional to speed²Radial dominant
Angular misalignmentHigh 1× and 2× axialAxial dominant
Offset misalignmentHigh 2× radialRadial dominant
Mechanical loosenessMultiple harmonics, subharmonicsRadial dominant
Bearing defect (outer race)BPFO + harmonics, non-synchronousRadial
Bearing defect (inner race)BPFI + harmonics, modulated by 1×Radial
Gear mesh problemsGMF + sidebandsRadial & axial
ResonanceHigh at specific frequency, speed-dependentDepends on mode

⚠️ Disclaimer: This tool provides guidance based on pattern matching. Vibration diagnosis requires expertise and often additional data (phase, time waveform, operating conditions). Always validate results with an experienced analyst.

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