FMEA

Question 1

What is FMEA?

Answer 1

• systematic approach and thought process used to:
  
  • assess how a given system or process can fail and identify its potential effects
  • identify corrective actions to reduce or eliminate the failure

Question 2

FMEA objective

Answer 2

• to identify reliability/safety critical areas/components in a system to determine where modifications may be required in the system

Question 3

Types of FMEA

Answer 3

• design(product)
• process

Question 4

Design(product) FMEA

Answer 4

• anaylsis of the product and how failure modes affect the product operation

Question 5

Process FMEA

Answer 5

• analysis of the process by which the product is built, maintained and used
• It examines the failures in the manufacturing(or servicing) process can affect product operation

Question 6

Approaches to FMEA

Answer 6

• functional
• hardware

Question 7

Functional approach to FMEA

Answer 7

• coarse system breakdown
• sub-assemblies are considered which provide some required function in the system. Consider effects of loss of inputs and internal failures
• used in the early stages

Question 8

Hardware approach to FMEA

Answer 8

• detailed system breakdown
• considers each individual component of the system separately
• used in detailed design

Question 9

FMEA procedure

Answer 9

1. Define system
2. Construct hierarchal breakdown and functional block diagrams
3. Record assumptions
4. Define system failure modes
5. List component(sub-system) failure modes
6. Complete FMEA worksheets
7. Review worksheets to determine the reliability critical components
8. Make recommendations for design improvements