Design-QFD (Week 6) Flashcards
What is Quality Function Deployment (QFD)
Quality Function Deployment is a technique developed in Japan during the mid-1970s to enable better understanding of the design problem, in particular customer needs, and to relate them to product design specifications
How to QFD work?
QFD links the needs of the customer (end user) with design, development, engineering, manufacturing, and service functions
What does QFD provide comprehensive development process for?
-Understanding customer needs
-What ‘value’ means to the customer
-understanding how customers
-Analyzing how we know the needs of the customer
-Deciding what features to include
-Determining what level of performance to deliver
-Intelligently linking the needs of the customer with design, development engineering, manufacturing and service functions.
What are important parts of QFD?
-it should be employed at the beginning of every project (original or redesign)
- Customer requirements should be translated into measurable design targets
-It can be applied to the entire problem or any subproblem
-First worry about what needs to be designed then how
-It takes time to complete, but pays off later in the design process
What is the QFD process?
- Identify the customers
- Determine the customers’ requirements
- Determine relative importance of the requirements
- Generate engineering specifications
- Relate customers requirements to engineering specifications
- Identify relationships between engineering requirements
- Identify and evaluate the competition
- Set engineering targets
Explain the Identify Customers Step
-Who are they
-Listen to the voice of the “customer” first need to identify the customer
-In most cases, there is more than one customer
-Consumers
-Regulatory Agencies
- Manufacturing
-Marketing/Sales
Explain the determine customer requirements step
-What do customers need and want?
-Need to determine what is to be designed
-Consumer
-Product works as it shul
-lasts a long time
-Is easy to maintain
-Looks attractive
- Incorporates latest technology
-Has many features
-Manufacturing
-Easy to produce
-Uses available resources
- Uses standard components and methods
- Minimum Waste
-Marketing/Sales
-meets customer requirements
- easy to package, store, and transport
-is suitable for display
Explain the determine importance step
-Consider relative importance of customers’ requirements
-Need to evaluate the importance of each of the customers requirements
-Basic requirements are not weighted
-Generate weighting factor for each requirement
-Relative weighting scales
-Fixed sum method
- Rank ordering
Explain the generate engineering specifications step
- How will the customers’ requirements be met?
-the goal is to develop a set of engineering specifications from the customers’ requirements
-Each customer requirement should have at least one engineering parameter
-Often use PDS to guide process
Explain the Relate Requirements step
-Relate customer requirements to engineering specifications
-Each cell represents how an engineering parameter relates to a customer requirement
9 = Strong Relationship, 3 = medium relationship, 1 = Weak Relationship, Blank = No relationship at all
Explain the Identify Relationships step
-Identify relationships between engineering specifications
-Engineering specifications may be dependent on one another
9 = Strong Relationship, 3 = Medium Relationship, 1 = Weak Relationship, -1 = Weak negative Relationship, -3 = Medium Negative Relationship, -9 = Strong Negative Relationship, Blank = No relationship at all
Explain the Identify and Evaluate Competition
-How satisfied are customers now?
-The goal is to determine how the customer perceives the competitions ability to meet each of the requirements
-It creates an awareness of what already exists
- It reveals opportunities to improve on what already exists
Explain the Set Engineering Targets Step
-How much is good enough?
-Determine target value for each engineering specification
-Look at set customer targets
-Use the Identify and Evaluate Competition step and the Identify Relationships step to set targets
