DFMEA
Definitions & Methods
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
What is a DFMEA ?
z FMEA stands for Failure Mode and Effect Analysis
z A DFMEA is the FMEA done at the Design stage
z A DFMEA is:
@ a design tool
@ a team effort
@ a living document
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
What are a DFMEA’s goals ?
z To increase the robustness of a design by
systematically listing its potential failure modes
z Satisfy its customerS who can be:
@ the OEM
@ the end customer (the driver)
@ the process team
@ the manufacturing team
@…
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
How do we proceed ?
1) A TE DFMEA expert develops the DFMEA.
2) His work is reviewed by a senior TE engineer before
each checkpoint.
3) This work is reviewed and discussed by the
customer DFMEA team during the checkpoints.
4) The TE DFMEA expert implement the agreed
corrections and carry on the development
5) Back to point 2)
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
Some examples of TE experience in DFMEA
z Integrated starter alternator controller
z Starter alternator power module
z Active suspension controller
z Engine management units
z Engine management systems
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
DFMEA Example
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
DFMEA Example (continued)
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
DFMEA Example (continued)
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
DFMEA Example (continued)
Classification: Confidential
Document Nr: OPG 050 005 rev 1.1 www.treng.biz
Reference Documents
z “Potential Failure Mode and Effect
Analysis – Reference Manual” by
Chrysler/Ford/GM 3rd edition
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