Question

Develop a simplified Failure mode and effects analysis (FMEA) for a microwave that is found in most homes. You are should have at least 3 different subcomponents. For each subcomponent, you should propose two different failure modes. For each failure mode, list one effect and a severity value, a cause and the occurrence, a method to control (detect) and a detection value. Also provide a Risk Priority Number (RPN) for each mode and explain why you’ve chosen your ratings for severity of the problem (S), likelihood of occurrence (O), and likelihood of detection (D) values. No need to provide recommended actions for this question.

Answer 1

Develop a simplified Failure mode and effects analysis (FMEA) for a microwave that is found in most homes. You are should have at least 3 different subcomponents. For each subcomponent, you should propose two different failure modes. For each failure mode, list one effect and a severity value, a cause and the occurrence, a method to control (detect) and a detection value. Also provide a Risk Priority Number (RPN) for each mode and explain why you’ve chosen your ratings for severity of the problem (S), likelihood of occurrence (O), and likelihood of detection (D) values. No need to provide recommended actions for this question.

Microwave subcomponents	Failure modes	Cause	Control Method	Occurrence	Rating
Attenuator	These are offered both in digital and voltage variable configurations	WIll stop function properly and caused major inconvenience because it's controls the frequency ranges	Can be controlled with quality durable manufacture to control the flutations	No effect on customer	No effect on customer (1)
Phase shifters	These shifters helps to produce power capabilities.These are specially for optical communication	Cause failure in controlling power inputs to the device	Replacing with Led	Unlikely	Minor defect(2)
Flex and Twist waveguide	These is due to the regular twist there is high occurrence of failure	Its inside so will not affect much but this is due to the waveguide that fail to receive signals	Needs to me manufactured with durable quality,so that it can run long	Unlikely to be detected	Major inconvenience (8)

Ratings for severity of the problem(S): These are considered as one of the major subcomponents which fail to work properly.Apart from these the rotating plate and door are likely to damage every time because of the improper assembly and low quality product are the main reasons that make the low rating and high severity of the problem (1) No effect on customer

Likelihood of occurrence(O): Few are very rare like low components,few are very occurrence due to the durability of the products and quality standards these occurs very less.But if its regularly used than there is a chance of high occurrence of issues(2) Unlikely

Likelihood of detection(D): The outer parts of the microwave easy to detect.But the parts inside the device or product is hard to identify.Only an expert can detect or Technician.(8)   Unlikely to be detected

Values: We can consider the RPF as O*S*D= (1)*(2)*(8)=16