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Design Failure Mode Effect and Analysis (DFMEA)
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Introduction
Risks associated in Mechanical design and need for DFMEA
What DFMEA accomplishes
Defining Failure modes
Mechanical Phenomena of failure modes
Cause , Effect and Root cause analysis
Domains of underlying root causes
Root cause Analysis - Example - Frame cracks
Effects of failure and Examples
Evaluation of Risk and and Severity levels
Occurence
Design prevention control
Detection control and Design verification
Grading of Occurence
Detection and its Grading
Grading of severity
Process of preparation of DFMEA
B diagram and Example of Bike
B diagram Wrench
B diagram Scissor jack
External B diagram Seat Belt system
P Diagram , example of a bracket
Why P diagram ?
P diagram details and Noise Factors
Input , Output, , Control parameters definitions
P diagram of Wrench
P diagram of Scissor Jack
P diagram of Bike
Format
DFMEA Bike Item 1
DFMEA Bike Item 2
DFMEA Bike Item 3
DFMEA Bike Item 4
Assigning Severity Rating to Item 1 failure modes
Assigning Occurence ratings to Potential causes in Item 1
Assigning Detection rating to Potential causes in Item 1
Complete the DFMEA- Exercise
Introduction
Introduction
Risks associated in Mechanical design and need for DFMEA
Preview
What DFMEA accomplishes
Basics of DFMEA
Defining Failure modes
Mechanical Phenomena of failure modes
Cause , Effect and Root cause analysis
Domains of underlying root causes
Preview
Root cause Analysis - Example - Frame cracks
Effects of failure and Examples
Evaluation of Risk and and Severity levels
Occurence
Design prevention control
Detection control and Design verification
Grading of Occurence
Detection and its Grading
Grading of severity
Process of preparation of DFMEA
Boundary Diagram
B diagram and Example of Bike
B diagram Wrench
B diagram Scissor jack
External B diagram Seat Belt system
Parameter Diagram
P Diagram , example of a bracket
Why P diagram ?
Preview
P diagram details and Noise Factors
Input , Output, , Control parameters definitions
P diagram of Wrench
P diagram of Scissor Jack
P diagram of Bike
DFMEA of a Bicycle
Format
DFMEA Bike Item 1
DFMEA Bike Item 2
DFMEA Bike Item 3
DFMEA Bike Item 4
Assigning Severity Rating to Item 1 failure modes
Assigning Occurence ratings to Potential causes in Item 1
Assigning Detection rating to Potential causes in Item 1
Complete the DFMEA- Exercise
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