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Failure Mode and Effects Analysis (Fmea)

This Failure Mode and Effects Analysis document summarizes potential failures for a DC motor used in a 2000 vehicle. It identifies three failure modes: 1) a loose controller cable connection resulting in an incorrect demand signal, 2) an incorrect speed demand being received due to a fault in the position controller's output or wear and tear, and 3) a signal loss due to faulty leads resulting in an unstable control signal and potential endangerment of operators or damage. Recommended corrective actions include replacing faulty parts, improving quality control procedures, and establishing a customer complaint department.

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Sumeet Ghodke
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94 views4 pages

Failure Mode and Effects Analysis (Fmea)

This Failure Mode and Effects Analysis document summarizes potential failures for a DC motor used in a 2000 vehicle. It identifies three failure modes: 1) a loose controller cable connection resulting in an incorrect demand signal, 2) an incorrect speed demand being received due to a fault in the position controller's output or wear and tear, and 3) a signal loss due to faulty leads resulting in an unstable control signal and potential endangerment of operators or damage. Recommended corrective actions include replacing faulty parts, improving quality control procedures, and establishing a customer complaint department.

Uploaded by

Sumeet Ghodke
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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FAILURE MODE AND EFFECTS ANALYSIS (FMEA) Subsystem/Name: DC motor Model Year/Vehicle(s): 2000/DC motor

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P = Probabilities (chance) of Occurrences Final Design: 31/5/2000 S = Seriousness of Failure to the Vehicle Prepared by: D = Likelihood that the Defect will Reach the customer R = Risk Priority Measure (P x S x D) Reviewed by: Chris FMEA Date (Org.): 27/4/2000 (Rev.) 31/5/2000) 3 = moderate or significant Current Control P 2 4 = high P.R.A. S D 4 1 R 8 5 = very high or catastrophic Recommended Corrective Action(s) Replace faulty wire. Q.C checked. 4 4 3 48 Intensive training for operators. Action(s) Taken

1 = very low or none No. 1

2 = low or minor

Part Function Failure Name Mode Part No. Position Receive Loose Controller a cable demand connection position Incorrect demand signal

Mechanism(s) Effect(s) & Causes(s) Of Failure of Failure Wear and tear Motor fails to move Position Operator error controller breakdown in a longrun

FAILURE MODE AND EFFECTS ANALYSIS (FMEA) Subsystem/Name: DC motor Model Year/Vehicle(s): 2000/DC motor

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P = Probabilities (chance) of Occurrences Final Design: 31/5/2000 S = Seriousness of Failure to the Vehicle Prepared by: D = Likelihood that the Defect will Reach the customer R = Risk Priority Measure (P x S x D) Reviewed by: Chris FMEA Date (Org.): 27/4/2000 (Rev.) 31/5/2000) 3 = moderate or significant Effect(s) Of Failure Extensive damage to the machine Extensive damage Current Control P 2 4 = high P.R.A. S D 4 4 R 32 5 = very high or catastrophic Recommended Corrective Action(s) Indicator and Audile warning Action(s) Taken

1 = very low or none No. 2 Part Name Part No. Drive Function Receive speed demand

2 = low or minor Failure Mode Incorrect speed demand being received

Mechanism(s) & Causes(s) of Failure Fault in position controllers output Wear and tear

Measures Incorrect actual speed speed reading

80

Voltmeter Improve check procedures

FAILURE MODE AND EFFECTS ANALYSIS (FMEA) Subsystem/Name: DC motor Model Year/Vehicle(s): 2000/DC motor

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P = Probabilities (chance) of Occurrences Final Design: 31/5/2000 S = Seriousness of Failure to the Vehicle Prepared by: D = Likelihood that the Defect will Reach the customer R = Risk Priority Measure (P x S x D) Reviewed by: Chris FMEA Date (Org.): 27/4/2000 (Rev.) 31/5/2000) 4 = high P.R.A. S D 5 4 5 = very high or catastrophic Recommended Action(s) Corrective Taken R Action(s) 60 Durability test on leads

1 = very low or none 2 = low or minor 3 = moderate or significant No. Part Function Failure Mechanism(s) Effect(s) Current Name Mode & Causes(s) Of Failure Control Part No. of Failure 3 Motor Provides Signal loss Faulty leads Unstable voltage control signal loop Endanger operators Serious damage Produce final product Defects in products Incorrect motion Customers complain Faulty products are identified

P 3

100 QC checked Increased staff in inspection Set up customer complain department

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