Machine Failure Analysis

Machine Failure Analysis is a structured approach to identify the root cause of equipment failures, prevent recurrence, and improve machine reliability, uptime, and safety

 Why Machine Failure Analysis Is Important

  • Reduces repeated breakdowns
  • Minimizes unplanned downtime
  • Improves MTBF & OEE
  • Lowers maintenance cost
  • Supports continuous improvement

🧩 Types of Machine Failures

  • Mechanical – bearing wear, misalignment, fatigue
  • Electrical – motor failure, wiring issues, overload
  • Hydraulic / Pneumatic – leakage, pressure loss
  • Control / PLC – sensor failure, logic error
  • Human / Process – improper operation, missed PM

Failure Analysis Process (Step-by-Step)

1️⃣ Failure Detection

  • Machine breakdown / abnormal behavior
  • Alarm, sensor alert, or operator report

2️⃣ Failure Data Collection

  • Machine ID & location
  • Date, time, duration
  • Failure symptoms
  • Operating conditions
  • Photos, videos, logs

3️⃣ Failure Classification

  • Failure mode (what failed?)
  • Failure type (mechanical, electrical, etc.)
  • Severity & criticality

4️⃣ Root Cause Analysis (RCA)

Common methods used:

  • 5 Why Analysis
  • Fishbone (Ishikawa) Diagram
  • FMEA (Failure Mode & Effects Analysis)

5️⃣ Corrective & Preventive Action (CAPA)

  • Immediate corrective action
  • Long-term preventive solution
  • Process or design changes
  • Training or SOP updates

6️⃣ Verification & Monitoring

  • Monitor recurrence
  • Update maintenance plan
  • Measure MTBF, MTTR improvement

 

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