(EDP) Develop Proposed Solution Lesson
Developed Proposed Solution Lesson
Introduction
Prototype
This stage of the Engineering Design Process is where the design is prototyped to evaluate for proof of concept. Products are assessed through prototypes to assure the performance and quality of the product prior to going to market and producing the item. Besides verification of expected performance, this iterative aspect of the design process also reduces development cost and time. A product not so scrutinized can be detrimental to the company and cause significant financial exposure.
Creation of a working prototype, evaluation through testing, and reporting on that is the goal of the Cardboard Chair Design Challenge. By the conclusion of this lesson you should have constructed your prototype and evaluated specifications to ensure the prototype meets the physical criteria. The actual testing and reporting will be in the next lesson.
Explore
The iterative cycle begins once the design process enters the stage to build the prototype. The result of each phase of prototype development is to evaluate the product and make any adjustments or changes. Improvements are made to the product throughout the development process. For very large and costly projects the prototypes are first conducted through computer simulations to verify fit and form. Sometimes these computer programs also run simulations for stress, thermal, electrical, or other engineering analysis. This action is once again saving development time and expense. Large projects also include small scale physical models as part of the development process. Working prototypes are built to verify performance and overall operation of the product.
The Cardboard Chair Design Challenge is the class assignment to design and build a prototype to your best effort following the design process.
** Required Images:
Image #1 – This is an isometric front view of chair showing legs, arms, back (like sample image on this document) to satisfy construction material, décor, seat, back, limited if any duct tape, and ergonomics.
Image #2– Bottom view of chair showing at least 3 legs.
Image #3– Image of tape measure against seat measuring seat height from floor that is clear and can read the numbers on the tape measure.
Image #4– Image of tape measure against back measuring back height from floor that is clear and can read the numbers on the tape measure.
Image #5 & #6 – Image of weight measured on bathroom scale of someone standing and holding the chair and one of person on scale without the chair. The difference between, weight of chair, will be written in the chart above.
Image #7– Image of average person sitting in chair to verify comfort, fit, and ergonomics.
Challenge
Take Away
Name three values for prototyping engineering designs prior to production
- to evaluate for proof of concept
- to assure the performance and quality of the product
- to verify expected performance
- to reduce development cost and time by providing a superior product
- to secure the reputation of a company or individual
- to reduce financial exposure from a faulty design
IMAGES CREATED BY GAVS