Traceable
Every record cites a clause
Bearings map to ISO 15243 damage classes and gears to ISO 10825, 13 modes carrying the standard's own numbering, so a finding traces back to the document.
ISO 15243 · ISO 10825 · multi-tenant · exportable
Read the damage.
Name the cause.
A photograph of a returned gearbox part becomes a standards-linked failure record: the damage mode, the severity, the mechanism that caused it, and the batch it came from. The model suggests. The inspector decides. Every confirmation becomes training data.
- ISO failure modes
- 13
- Cause mechanisms
- 8
- Severity grades
- 5
ISO failure modes
Cause mechanisms
Severity grades
live
select
ISO 15243CH 1/3
6 MODES
Rolling-bearing damage classes
Core objectives
Three things the system is built to do
Witness is not a general defect detector. It is scoped to rotating equipment, to two published standards, and to the decision an inspector actually has to make.
- 01
Make a failure traceable
A returned part usually arrives with a photograph and nothing else. Witness turns that photograph into a record that cites a clause of a published standard, so the finding survives a warranty dispute.
- 02
Separate what from why
The damage mode says what the surface shows. The attribution says why it got there. The same pit can mean end of life or a contaminant dent that seeded it early, and the batch-level action differs.
- 03
Turn inspection into data
Every confirmed or corrected record is a (model, human) pair. The workspace accumulates a labelled set that belongs to the plant, and exports on demand as JSON.
Workflow
Photograph in, reviewed finding out
Each stage does one job and hands off. Nothing decides for itself past the confidence gate. That gate is the single place the system chooses whether a person is needed.
Score above the threshold files itself. Below it queues for a person.
- 1
Enrol
Upload known-good reference photographs for each part family. This set defines what normal looks like for this workspace, not for the industry.
- 2
Intake
The photograph is read for EXIF, scored for provenance, and hashed. A perceptual hash catches the same part submitted twice.
- 3
Detect
Stage one asks one question: is this part abnormal against the reference set? A PatchCore-style memory bank answers it, and returns a heat map.
- 4
Classify
Stage two asks a second question: which ISO mode is it? The choice is forced. The model must pick from the standard's own list, never invent a label.
- 5
Decide
A confidence gate splits the traffic. High confidence files itself. Low confidence queues for an inspector, whose call is the authoritative one.
The loop does not stop at the finding. A confirmed record links back to the batch that produced the part, so a repeated mode across one supplier becomes a fleet signal rather than a pile of separate complaints.
What it knows
Two part families, two published standards
Bearings and gears fail in different ways, and each has its own catalogue. Witness carries the standard's own numbering, so a finding traces back to the document rather than to a label somebody invented.
Rolling bearings · ISO 15243
Six primary damage classes, from rolling-contact fatigue to fracture and cracking. 6 modes carry clause numbers such as 5.1 and 5.6.
Gear teeth · ISO 10825
7 wear and damage classes covering the flank, the root and the mesh: wear, scuffing, contact fatigue, cracks and tooth fracture.
The third axis: attribution
A mode describes the surface. An attribution names the mechanism that put it there. Witness records both, because the fleet action depends on the second one.
- Operating duty
- Lubrication
- Contamination
- Mounting / alignment
- Overload
- Electrical
- Corrosion
- Handling
Inside the part it reads
SHEET
03
Bearing assembly
REV B
SCALE NTS
Reference geometry
FIG. 4-AFastener
- Thread
- M12 × 1.75
- Grade
- 10.9
- Head
- hex, 19 A/F
- Torque
- 86 N·m
FIG. 4-BShaft seat
- Diameter
- Ø 20 h6
- Fit
- k5 interference
- Ra
- 0.4 µm
- Runout
- 0.010 mm
FIG. 4-CPreload spring
- Free length
- 84 mm
- Rate
- 12 N/mm
- Wire
- Ø 2.5 mm
- Ends
- closed, ground
FIG. 4-DHousing flange
- Bolt circle
- Ø 68 mm
- Holes
- 6 × Ø 9
- Pilot
- Ø 36 H7
- Material
- EN-GJL-250
Severity · ISA-101 discipline
Five grades, each tied to an action
Severity never rides on colour alone. Every grade pairs a hue with a filling-disc glyph and a numeral, so the signal survives colour-vision deficiency, a greyscale print, and a washed-out bench display.
- 0
Serviceable
Return to service
- 1
Monitor
Re-inspect at next interval
- 2
Plan repair
Schedule rework
- 3
Remove from service
Pull the part
- 4
Safety-critical
Quarantine batch, escalate
Features
What you get once records start accumulating
The first finding is useful. The hundredth is where the system earns its place: patterns across suppliers, batches and duty cycles become visible.
Isolated
One workspace cannot read another
Postgres row-level security scopes every row to the signed-in tenant. Reference sets, findings and batches belong to the workspace that made them.
Honest
The gate is visible
Confidence is shown, not hidden. A record that the model was unsure about is marked unconfirmed until a person confirms or corrects it.
Provenanced
Findings link to batches
A part carries a batch code and a supplier. Link enough findings and a repeated mode stops being an anecdote and becomes a warranty case.
Analytic
The fleet cube
Insights aggregates on three axes at once: ISO mode against severity against attribution, so a lubrication problem separates from a design problem.
Portable
The labels are yours
Confirmed records export as JSON, with the model's suggestion and the human call side by side. That pairing is what trains the next model.
Start with one photograph
Open the console and walk the loop end to end: enrol a reference set, score a part, accept or correct the ISO mode, then watch the finding appear in the fleet cube against its batch.