Manufacturing Processes: Materials and Properties Overview, Lecture notes of Manufacturing Processes

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11/19/

ME321 Manufacturing Processes

Lecture 2:

Overview of Materials

Properties for Manufacturing

Assistant Prof. Recep ÖNLER

ronler@gtu.edu.tr

ME321 Manufacturing Processes

Syllabus

• (^) Instructor: Recep Onler
• (^) Email: ronler@gtu.edu.tr
• (^) Course Materials: Will be on MS Teams
• (^) Manufacturing Engineering & Technology (7th Edition), Serope Kalpakjian
• (^) DeGarmo, E. Paul, et al, "Materials and Processes in Manufacturing", McMillan Publishing.
• Class Meetings Lecture: Tuesday, 9 : 0 0-1 2 : 0 0 pm
• (^) Office Hours TBD

Policy

Important

Only official medical excuses will be accepted as a reason to miss

deadlines (homework, labs, exam, etc.).

Policy on Academic Integrity

You are encouraged to study in groups and learn from one another, but

the work you submit must represent your own intellectual effort. Copying

work from other students, past or present, or from any other resource, in

any form or to any extent, violates the policy for this course as well as

the University’s regulations. Such situations will be prosecuted according

to Gebze Technical University’s Policy on Cheating and Plagiarism.

Policy on Electronic Recording

No student may electronically record or tape any classroom activity

without the express written consent of the instructor.

11/19/2024 5 Policy Feedback If at any time you feel that the course is not meeting your expectations or you want to provide feedback on how the course is progressing for you, please contact me (whether it is in person or an anonymous note, etc.). ENGLISH PLEASE !!! Speak, ask your questions, send your emails etc. in English. These will be the only time for yourself to practice your English. You will realize your weaknesses and act on to improve your English ME321 Manufacturing Processes

Economic multiplier for different sectors of the US Economy. Source: US Dept. of Commerce.

11/19/2024 12 Turkey Export: Technology Intensity ME321 Manufacturing Processes

11/19/2024 14 Technological Importance ME321 Manufacturing Processes Technology - the application of science to provide society and its members with those things that are needed or desired

• (^) Technology provides the products that help our society and its members live better
• (^) What do these products have in common?
  • (^) They are all manufactured
• (^) Manufacturing is the essential factor that makes technology possible

11/19/2024 15 Economic Importance ME321 Manufacturing Processes

U.S. Economy

Sector: %GDP

Agriculture and natural resources 5

Construction and public utilities 5

Manufacturing 15

Service industries* 75

* includes retail, transportation, banking,

communication, education, and government

11/19/2024 17 Manufacturing - Economic ME321 Manufacturing Processes

• (^) Transformation of materials into items of greater

value by one or more processing and/or assembly

operations

11/19/2024 18 Materials in Manufacturing ME321 Manufacturing Processes

• Most engineering materials can be classified

into one of three basic categories:

1. Metals
2. Ceramics
3. Polymers

• (^) Their chemistries are different, and their

mechanical and physical properties are different

• (^) These differences affect the manufacturing

processes that can be used to produce products

from them

11/19/2024 20 Questions ME321 Manufacturing Processes

• (^) What materials have been used in particular applications?
• (^) Why were these materials selected?
• (^) Were the materials processed in special ways?
• (^) How did material properties relate to performance in service?
• (^) Were there any problems initially, and did any develop later?
• (^) What precautions are recommended?
• (^) What were the key tradeoffs between properties and performance?
• (^) What were the limitations imposed by the selected materials?

11/19/2024 21 More Questions ME321 Manufacturing Processes

• (^) What materials might have the characteristics that meet the needs of the application I’m working on?
• (^) Where would I find information about such materials?
• (^) What processing techniques might I use to create parts or components from these materials?
• (^) How do I take into account properties and manufacturing processes in the design process?
• (^) How would I confirm that the materials I specify and purchase have the properties I’m looking for?
• (^) How does the organization I’m working for go about supplying the materials required by the design I’m proposing, and what limitations may be imposed on my selection by such factors as cost, environmental degradation, etc.?