FMEA

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Failure Mode and Effect Analysis or FMEA is a structured method to analyze component and system reliability. It is a framework to look at how something fails (failure mode) and what happens when it does (failure effect).

Basics

At a lay level, a FMEA should be a list of what-ifs, as in: "what if this part broke?". Each "what-if" being looked at in multiple ways:

  • How could this part break?
  • What will happen to the car if this thing goes wrong?
  • How likely is this thing to go wrong?
  • What can we do to stop this from happening?

Additional detail can be included at whatever level of depth is deemed appropriate. Some further questions to ask include:

  • What could cause this failure?
  • What physically happens to the parts that are directly connected?
  • What happens to the functionality of the system that this is a part of?
  • To what extent is the functionality of the car effected?
  • If this failed, would the car continue to be rules compliant?
  • If this failed, could the driver be in danger?
  • If this failed, could a bystander or track volunteer be in danger?
  • How quickly can this be repaired if it failed?
  • Would a new component have to be bought/machined or is this meant to be repairable?
  • How long is the lead time for a replacement component?

When to use FMEA

Design Phase

Manufacturing Phase

Testing Phase

Planning Phase

Types of FMEA

System/Functional FMEA

Process FMEA

Design FMEA

Manufacturing FMEA

Software FMEA

How to Make an FMEA