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Optimal part design has always been a challenge for plastic part designers. This difficulty mainly stems from the fact that with the exception of a few basic rules in designing plastic parts, the design criteria change from material to material as well as from application to application.
 
Today, designers are challenged with multiple requirements while designing plastic parts. Major emphasis is on economics, functionality, manufacturability, and aesthetic appeal. Some compromise during the design process is inevitable; in some cases, trade-offs like these lead to pre-mature failures. The most common mistakes made by designers when working in plastics are related to wall thickness, sharp corners, creep, draft, environmental compatibility, and placement of ribs.
 
This part design course will discuss how to avoid performance and process related issues by citing examples of actual parts that were designed and put into service. The focus will be on how a good design enhances the performance and processability, conversely how a less than optimal design can create premature failures and processing nightmare.
This course will cover the fundamentals of part design for the injection molding process. Topics such as materials selection, mold design, optimum molding, effects of stress-strain and creep on part design as well as assembly techniques with working examples will be thoroughly discussed in class. The objective of this course is to provide the student an overview of basic part design considerations for products molded with thermoplastic resins. It will help educate the student a proper way of material selection, develop a functional design and work within the limitations of the injection molding process.
 
Learning Outcomes:

  • Students will develop a good working knowledge in plastic part design that can be applied to improve product quality as well as productivity.
  • Understanding plastic behavior over time (creep, relaxation) and environmental effects on plastics (humidity, temperature, chemicals, etc.) and establish end-use product specifications.

Course Number: MAE-40033
Credit: 3.00 unit(s)
Related Certificate Programs: Mechanical Analysis and Design

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