Chapter 8.9, Problem 2P

Compare (a) the systematic design process that leads to a morphological chart with a large number of possible solutions with (b) a design process, in which the problem is identified and then a brainstorming session is started to generate different solutions. Which of these methods would you use. Why? In the event that a certain aspect of the design needs modification, which of the two methods would be easier to apply toward that modification. Why?

To determine

The comparison between design process by morphological chart and brainstorming session.

Explanation of Solution

The steps to be followed in the morphological chart are shown below.

• • Extract all purpose functions: The product has to perform these high level functions, they will be near to the root in the function tree. They occupy the first column in the left in the morphological chart.
• • Develop concepts for each function: In this step the aim is to produce as many concepts as possible for the functions that have been identify.
• • For each functions or sub function lists all method that is to be used: In this step, the alternative solution for the problem is listed down. For example to lift the body, you can use different equipment like ladder, screw and rack and pinion arrangement etc.
• • Draw the chart containing possible sub solution: The chart formed in this step is called morphological chart. This chart specifies all possible solution for the given problem.
• • Identify feasible combination: All the solution that has been listed may not feasible, in this step the feasible region is identify.

The figure below shows all possible solution with the feasible solution.

Figure-(1)

Brainstorming:

In this method large number of ideas from the group of people is listed down in the shorter time. The principle is that when there are many ideas, the chance that there will be better idea among them is higher than when there are few ideas.

Some features of the brainstorming is listed down:

• • The leader should clearly state the purpose of the brainstorming session.
• • All participants should tell their solution to the leader.
• • All the ideas are recorded on a flipchart so that all members could see them.
• • After all ideas have been listed, clarify all ideas and eliminate the one which are duplicate.

Both the method can be useful depending upon the situation.

In the event that a certain aspect of the design needs modification brainstorming method would be easier to apply towards that modification because in this method large number of ideas from the group of people is listed down and thereby the best possible outcome can be reached in the shorter time.