Design Methods (Sustainable & Inclusive, DFA/DFM)

Question 1

Sustainable development is defined as “Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.”

Answer 1

True

Question 2

A sustainable product only needs to consider the environmental impact during its manufacturing phase

Answer 2

False

A sustainable product “Goes beyond ‘eco’ and ‘green’ – has to consider the entire product lifecycle,” including manufacturing, distribution, packaging, use, and disposal/recycling at end of life.

Question 3

In the sustainable design methodology presented, Environmental Aspects (EA) of a product are assessed across its whole lifetime

Answer 3

True

Step 1 of the methodology involves determining the environmental aspect score for the reference product, which Covers the whole lifetime of the product, including raw materials, manufacture, usage, end-of-life, packaging, and transport and logistics.

Question 4

One of the key tips for designing more sustainable products is to only use non-renewable materials

Answer 4

False

Key tips include replacing non-renewable materials with more sustainable materials and reducing the use of raw material.

Question 5

nclusive Design is primarily concerned with designing specialized products for people with disabilities

Answer 5

False

Inclusive Design is defined as the design of mainstream products and/or services that are accessible to, and useable by, as many people as reasonably possible without the need for special adaptation or specialised design.

Question 6

One principle of Inclusive Design is “Tolerance for Error,” which suggests maximizing hazards and the adverse consequences of accidental actions

Answer 6

False

The principle of “Tolerance for Error” aims to minimize hazards and the adverse consequences of accidental or unintended actions.

Question 7

A primary goal of Design for Assembly (DFA) is to reduce the total number of parts in the product

Answer 7

True

Reducing part count is explicitly listed as a key principle and the focus of Step 2 in the DFA process.

Question 8

Design for Assembly (DFA) aims to maximize the number of parts and complexity of operations to improve product performance

Answer 8

False

The goal of Design for Assembly (DFA) is to minimize the cost of Assembly by reducing the number and complexity of operations, and reducing the number of parts.

Question 9

According to the DFA process, a part is considered essential only if it moves relative to all other parts already assembled OR if it is made of a different material

Answer 9

False

To determine if a part is essential, three questions are asked (moves relative, different material, separate for service). A part is considered essential if ALL answers are “Yes”. If any answer is “No”, it may be non-essential.

Question 10

Design for Manufacture (DFM) is concerned with designing a product for ease of assembly

Answer 10

False

Design for Manufacture (DFM) is the method of design for ease of manufacturing of parts.

Question 11

Design for Manufacture guidelines recommend designing parts with tolerances that are tighter than the process capability to ensure high precision

Answer 11

False

Design for Manufacture guidelines recommend designing parts with tolerances that are within process capability (avoid tolerances tighter than process capability).