Tech 190A Week 9 Lecture

1. Tech 190A Week 9 Lecture Introduction to New Product Development (Specifications)

2. Specifications • A design specification is a detailed document that provides information about a new product idea to set criteria the developers will need to meet. Its use is called for where a product has to be specially made to meet a need. • The product design specification (PDS) is a document created during the problem definition activity very early in the design process. It details the requirements that must be met in order for the product or process to be successful. • The document lays the groundwork for all engineering design activities and ensures that all relevant factors are accounted for and all stakeholders are heard from.

3. Product Design Specification (PDS) • The design specification must include all necessary drawings, dimensions, materials, environmental factors, ergonomic factors, aesthetic factors, costs, maintenance, quality, safety, documentation, company constraints,performance issues, market issuesand descriptions that will be needed. • Typical performance issues include size, power requirement, service life etc. • Typical market issues include potential customer base, their demographic information and locations etc. • Typical company constraints on product design, manufacture, and distribution involve strengths and weaknesses of the company in fulfilling these roles. • The product design specification should be written as a list of requirements under each area of interest.

4. Sample Product Design Specification Areas • Materials • Environmental factors • Ergonomic factors • Recycling • Aesthetic factors • Cost • Maintenance • Quality • Safety • Documentation • Company capability issues • Government regulations • International issues • Ethical issues

5. Drawings • Show all views of each part • Show 3D model of each part • Show assembly drawing

6. Dimensions • Detailed part drawings showing all required dimensions • Appropriate set of views with no redundancy, tolerancing with reasonable values for each dimension • Title block with part name, drawing number, owner name, date, material, units, projection • Meaningful and detailed product/parts analysis

7. Materials • Types of materials • Suppliers of materials • Locations of materials • Cost of materials • Quality of materials • Form of materials • Delivery mode of materials • Supply chain logistics of materials • Others

8. Environmental Factors • Effects on environment • Green factors of green audit score • Disposal method • Waste stream analysis

9. Ergonomics Factors • Ease of use for users • Safe to users • User-friendly to users • Healthy to users • Others

10. Aesthetic Factors • Appealing • Color • Stylish • Options • Others

11. Cost • Price of finished product • Cost of production • Cost of materials • Overhead • Others

12. Maintenance • Ease of maintenance • Cost of maintenance • Frequency of maintenance • Availability of maintenance personnel • Others

13. Quality of Product • Performance • Extra features • Conformance • Reliability • Durability • Availability • Aesthetics • Reputation • Others

14. Safety • To users • To the environment • To animals • To equipment • To society • Others

15. Writing a Product Design Specification • Write in list format, not as an essay. • Quantify your parameters, i.e. use target goals like exact weight or sizes instead of “like” or “about”. • List as many specifications as possible in as many areas.

16. Chapter 5: Design Thinking to Bridge Research and Concept Design • Ethnographic research • Ethnography refers to the qualitative research method of describing human social phenomena, based on data obtained primarily from fieldwork. • The goal is a complete, accurate description of the culture being studied, on its own terms. • Imagery • Pain points