QUALITY MANAGEMENT

Fishbone Analysis - Weld Penetration

New CAPA
ROOT CAUSE ANALYSIS

Fishbone Analysis - Weld Penetration

Weld penetration below the specified requirement
CAPA-2026-0017 · Weld penetration below requirement
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Interactive Ishikawa Diagram
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Cause Root cause
CAUSES Man Operator adjusted current with… Machine Welding controller current dri… ✓ Method Parameter window was not locked ✓ Material Material surface condition var… Measurement Current verification was perfo… Environment Ambient temperature affected p… PROBLEM Weld penetration below the … pecified requirement
Cause Register
Evidence-backed causes identified during analysis
6 causes
CategoryCauseEvidenceClassification
Man Operator adjusted current without documented escalation Additional sample evidence for CAPA-2026-0017. Potential cause
Machine Welding controller current drift Additional sample evidence for CAPA-2026-0017. Root cause
Method Parameter window was not locked Additional sample evidence for CAPA-2026-0017. Root cause
Material Material surface condition varied Additional sample evidence for CAPA-2026-0017. Potential cause
Measurement Current verification was performed only weekly Additional sample evidence for CAPA-2026-0017. Potential cause
Environment Ambient temperature affected preheat consistency Additional sample evidence for CAPA-2026-0017. Potential cause
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