Understanding the Problem and the Development of Engineering Specifications - created from Mind Map

Page 1

1.Understanding of product need.

2. IDENTIFY THE CUSTOMERS: WHO ARE THEY?

3. DETERMINE THE CUSTOMERS ' REQUIREMENTS: WHAT DO THE CUSTOMERS WANT?

4. DETERMINE RELATIVE IMPORTANCE OF THE REQUIREMENTS: WHO VERSUS WHAT

5. IDENTIFY: AND EVALUATE THE COMPETITION

6. GENERATE ENGINERING SPECIFICATIONS HOW WILL THE CUSTOMERS REQUIREMENTS BE MET?

7. RELATE CUSTOMERS REQUIREMENTS TO ENGINERING SPECIFICATIONS: HOW TO MEASURE WHAT

8. SET ENGINERING SPECIFICATION TARGET AND IMPORTANCE: HOW MUCH IS GOOD ENOUGH

9. IDENTIFY RELATIONSHIPS BETWEEN ENGINERING SPECIFICATION: HOW ARE THE HOWS DEPENDENT ON EACH OTHERS?

“Understanding the design problem” means to translate customers’ requirements into a technical description of what needs to be designed

There are many techniques that are used to generate engineering specifications. One of the best and the most popular currently called Quality Function Deployment (QFD).

QFD is organized to develop the main pieces of information necessary to understand the problem:

1. Hearing the voice of the customers

2. Developing the specifications or goals for the product

3. Finding out how the specifications measure the customers’ desires

4. Determining how well the competition meets the goals

5. Developing numerical targets to work toward

For most design situations, there is more than one client; for many products, the most important customers they are consumers.

A method to ensure that you have identified to all customers is consider the entire shelf life of the product

consumers want a product that works as it should, lasts a long time, is easy to maintain, looks attractive, incorporates the latest technology and have many characteristics.

QFD collects information from There are basically three commonly used methods:

observations

surveys

groups of focus.

Regardless of the method used, these steps will help the design team develop useful data:

1. Specify the Information Needed

2. Determine the Type of Data-Collection Method to Be Used

5. Order the Questions

6. Take Data

7. Reduce the Data

3. Determine the Content of Individual Questions

4. Design the Questions

QFD assesses the importance of each of the customer's requirements. This is achieved by generating a weighting factor for each requirement.

Determinate how the customer percelves the competition's ability to meet each of the requirements

The customer requirement

2. The product meets the requirement slightly

1. The product does not meet the requirement at all

5. The product fulfills the requirement complete

3. The product meets the requirement somewhat

4. The product meets the requirement mostly

Customers requeriments

Parameters of interes and targets for parameters

can be measured

Time to attach

# Of parts

# Of standars tools used

# Steps needed to attach

How an enginering epecification relates to a customers requirement

Strong measures for a customers requirement and others providing no measure at all

Set the targets and estabilish how important it is too meet each of them

Specification importance with the method

Step 1: Multiply the importance (0-1-3-9)

Step 2: Sum the weighted values for each for each specification

Step 3: Normalize these sum across all specification

Engineering specifications may be dependent on each other