Introduction to Materials Processes Categorizing Materials Materials Families

Introduction to Materials & Processes

Categorizing Materials

Materials Families n n n Metallics Ceramics Polymerics Composites Other

Other Categories n n n n n Toxic / non-toxic Organic / inorganic Renewable / nonrenewable Recyclable / nonrecyclable Natural / synthetic Radioactive / nonradioactive High cost / low cost Rare / abundant Other

Materials Cycles

IPO Model n n n Input Process Output Feedback Goals

PTUD n Procurement Transformation Utilization Disposition

Procurement n n n AKA: “getting” or “winning” Harvesting (biologics) Extracting (nonbiologics)

Transformation n AKA: “changing” Primary Processing: Converting raw materials into useful stock for manufacturing and construction Secondary Processing: Converting stock into useful products

Transformation Processes n n n n Casting and Molding Forming Separating Combining and Assembly Conditioning Finishing (Note: this is one of many approaches. )

Utilization n AKA: “using” By processor By end user

Disposition n n AKA: “getting rid of” Storage n n n n Land Subterranean Sea and Subaqueous Air Space Reusing (back to utilization) Recycling (back to transformation) Renewing (back before procurement)

FIGURE 1 -7 Materials Cycle—Life Cycle Analysis James A. Jacobs & Thomas F. Kilduff Engineering Materials Technology, Fourth Edition Copyright © 2001 by Prentice-Hall, Inc. Upper Saddle River, New Jersey 07458 All rights reserved.