Podcast
Questions and Answers
What is the methodology used to translate customer requirements into measurable technical specifications?
What is the methodology used to translate customer requirements into measurable technical specifications?
- Design Failure Mode and Effects Analysis (DFMEA)
- Reliability Function
- Design Verification
- Quality Function Deployment (QFD) (correct)
The Failure Rate Curve shows failure rates increasing over time.
The Failure Rate Curve shows failure rates increasing over time.
False (B)
What is the term for the structured approach that identifies and addresses potential failures in design?
What is the term for the structured approach that identifies and addresses potential failures in design?
Design Failure Mode and Effects Analysis (DFMEA)
The permissible variation in product dimensions during manufacturing is known as __________.
The permissible variation in product dimensions during manufacturing is known as __________.
Which term describes the ability of a product to perform its intended function for a specified period?
Which term describes the ability of a product to perform its intended function for a specified period?
Match the types of failures with their descriptions:
Match the types of failures with their descriptions:
Achieved Reliability differs from Inherent Reliability in that it is the reliability after production.
Achieved Reliability differs from Inherent Reliability in that it is the reliability after production.
The statistical function used to determine the probability of failure within a specific time range is called the __________.
The statistical function used to determine the probability of failure within a specific time range is called the __________.
What is the primary goal of the concept development process in product design?
What is the primary goal of the concept development process in product design?
How does the House of Quality assist in the design process?
How does the House of Quality assist in the design process?
What distinguishes inherent reliability from achieved reliability?
What distinguishes inherent reliability from achieved reliability?
What does the Process Capability Index (Cp) measure?
What does the Process Capability Index (Cp) measure?
What role does Design Failure Mode and Effects Analysis (DFMEA) play in product development?
What role does Design Failure Mode and Effects Analysis (DFMEA) play in product development?
What is a functional failure in the context of product reliability?
What is a functional failure in the context of product reliability?
Explain the purpose of reliability testing in the design verification phase.
Explain the purpose of reliability testing in the design verification phase.
What are systematic errors in measurement systems, and why are they significant?
What are systematic errors in measurement systems, and why are they significant?
Flashcards
Quality Function Deployment (QFD)
Quality Function Deployment (QFD)
A method for turning customer needs into technical specifications.
Concept Development
Concept Development
The process of defining product functionality based on customer needs, technology, and economics.
Design Failure Mode and Effects Analysis (DFMEA)
Design Failure Mode and Effects Analysis (DFMEA)
A way to find and fix potential problems in a product's design.
Tolerance
Tolerance
Signup and view all the flashcards
Reliability
Reliability
Signup and view all the flashcards
Failure Rate Curve
Failure Rate Curve
Signup and view all the flashcards
Process Capability Index (Cp)
Process Capability Index (Cp)
Signup and view all the flashcards
Functional Failure
Functional Failure
Signup and view all the flashcards
What is QFD?
What is QFD?
Signup and view all the flashcards
What's DFMEA?
What's DFMEA?
Signup and view all the flashcards
Reliability Function
Reliability Function
Signup and view all the flashcards
Study Notes
Product Development and Reliability
-
Concept Development: Determining product functionality based on customer needs, technology, and economics.
-
Quality Function Deployment (QFD): Translating customer requirements into measurable technical specifications.
-
Design Failure Mode and Effects Analysis (DFMEA): Systematically identifying and addressing potential design failures.
-
Tolerance: Permissible variation in product dimensions during manufacturing.
-
Reliability: A product's ability to perform its intended function over time.
-
Process Capability Index (Cp): Ratio of specification width to process natural variation.
-
Failure Rate Curve: Graphical representation of failure rate, initially high, decreasing, then increasing.
-
Functional Failure: Failures occurring at the start of a product's life, often due to manufacturing defects.
-
Reliability Function: Statistical function calculating the probability of product failure within a time frame.
-
Design Verification: Systematically confirming designs meet customer needs and production specifications.
Design for Six Sigma (DFSS) Activities
-
Concept Development: Establishing product principles based on customer needs and capabilities.
-
Design Development: Refining product design, including tolerance design, DFMEA, and reliability prediction.
-
Design Optimization: Enhancing product efficiency through Taguchi loss function and optimization of reliability.
-
Design Verification: Validating the design through reliability testing, measurement system evaluation, and process capability evaluation.
House of Quality (HoQ)
- Steps in Building the HoQ:
- Identify customer needs and technical requirements.
- Relate customer needs to technical requirements.
- Evaluate competing products.
- Set targets for technical requirements.
- Determine deployment of technical requirements.
Types of Failure
-
Functional Failures: Failures at the start of a product's life due to defects.
-
Reliability Failures: Failures occurring later due to degradation and wear.
Types of Reliability
-
Inherent Reliability: Reliability due to the fundamental qualities of the product.
-
Achieved Reliability: Realistically achievable reliability after considering manufacturing and operational issues.
Reliability Measurement
-
Failure Rate: Rate of failures per unit of time.
-
Mean Time to Failure (MTTF): Average time before a failure occurs.
-
Mean Time Between Failures (MTBF): Average time between failures.
Measurement System Errors
-
Systematic Error (Bias): Consistent deviations from true values.
-
Random Error: Erratic deviations due to chance.
Process Capability Studies
-
Peak Performance Study: Understanding the best process performance.
-
Process Characterization Study: Analyzing process variability.
-
Component Variability Study: Assessing variability in individual components.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
