Design ProcedureSubject: DMESemester: 5th Division: FXBranch: Mechanical

Prepared By (Roll no.):1. Akash Ambaliya (03)2. Randhir Chavda (23)3. Nirav Hadiya (43)

Atmiya Institute of Technology & Science

Gujarat Technological University

What is design procedure

Design process is a collection of procedures and habits that help teams design better products.

Designing is the process of making many decisions that converts a need into a hardware reality.

Need Product

7-Step Design Process

1. Product Design Specifications (PDS)2. External Search (Research) 3. Internal Search (Brainstorming)4. Concept Evaluation and Selection5. Detail Design (Engineering) 6. Prototyping and Testing7. Documentation

Design Process OutcomesStep Outcome

Product Design Specifications PDS DocumentExternal Search (Research) List of existing related products

and technologiesInternal Search (Brainstorming)

A lot of solution ideas

Concept Evaluation / Selection Pros and Cons / Decision MatrixSelection of one idea to implement

Detail Design (Engineering) Determination of all details needed to build the product

Prototyping and Testing Comparisons to PDS targetImprovement recommendations

Documentation Final Design ReportBOM + Production DrawingsAll other reports

Detail Design (Engineering)

Lift and Drag Coefficients (as effected by ground promimity)

00.05

0.10.15

0.20.25

0.30.35

0 0.05 0.1 0.15

h/L

Coe

ffic

ient

Drag Coefficient

Lift Coefficient

More Abstract Engineering Less Abstract

Design Process

Applies to Top-level decisions Applies to lower levels decisions

Define requirements Search for existing ideas/technologies Brainstorm for solutions Pick a candidate Determine the details

Product Development Process

Concept Synthesis

PDS

Concept Evaluation

Candidate Design

Detail Design

Candidate Design

Release for Production

Prototyping

Detail Design

Parameter Design

Candidate Design

Release for Production

System-Level Design

Prototype Testing

Components

No Numbers

Numbers

Complexities of Developing a PDS Document

Level-I: Goal is clear, “Design a X to do Y” specifications are known, priorities are known, no mass production concerns, IP issues not important, limited customer base Example: one-of-a-kind equipment.

Complexities of Developing a PDS Document

Level-II: Goal is specific “Design a X to do Y”, Specifications are unknown, Priorities are unknown, Mass production concerns, IP issues are important, expanded customer base Example: Most consumer products

Complexities of Developing a PDS Document

Level-III: Goal is unclear, “Design ? To do ? There is a general statement of need Not easy to get to: “Design X to do Y” Example: Oceans are rising

Customers People who define the PDS People who influence product success People you cannot ignore

Team

Company

(Internal)

Globe

(External)

Methods of setting targets

Some targets are specified by: Marketing Management Regulations /standards Users / buyers / retailers

Methods of setting targets

Benchmarking + parametric Studies Technology capability Field experts Experimentation Educated guesses Select ranges for targets from Barely acceptable to highly desirable

Thank You…