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Engineering Materials 2109101 Department of Metallurgical Engineering Department of Civil Engineering

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Page 1: Engineering Materials 2109101

Engineering Materials

2109101

Department of Metallurgical EngineeringDepartment of Civil Engineering

Page 2: Engineering Materials 2109101

Course Information

22109101 – Engineering Materials

• Class: SEC 1 : Wed 08:00 – 09:30 EN100 201B

Fri 08:00 – 09:30 EN100 201B

SEC 2 : Mon 09:30 – 11:00 EN100 201A

Wed 09:00 – 11:00 EN100 201A

SEC 3 : Mon 09:30 – 11:00 EN100 201A

Wed 09:30 – 11:00 EN100 201A

• 2109101 (3-0-6) Credit : 3

Recommended Self-study: 6 hr

• Final Exam [45%]: >>> รอประกาศอกีคร ัง้

• Mid-term Exam [45%]: >> สอบ Online

• In-Class Quiz [10%]

Fully online(MyCourseVille)

Page 3: Engineering Materials 2109101

ข้อตกลงรายวิชา

32109101 – Engineering Materials

1. มีการเช็คชื่อโดยการถามค าถามสั้นๆ โดยไม่มีการแจ้งล่วงหน้าในทุกคาบ เพื่อให้นิสิตได้เข้าเรียน ซึ่งเป็นคะแนน (ถ้าเข้าสายหรือออกไป คุณอาจจะไม่ได้มีการเช็คชื่อในคาบนั้น) !!!

2. เปลี่ยนชื่อ zoom เป็นรหัสนิสิตทุกครั้งในการเข้าห้องเรียน เพื่อใช้ในการเช็คชื่อ เน้นย้ าว่าต้องเช็ครหัสนิสิตให้ถูกต้อง

Page 4: Engineering Materials 2109101

ข้อตกลงรายวิชา

42109101 – Engineering Materials

นิสิตคณะวิศวกรรมศาสตร์ ที่มีความเดือดร้อน อุปกรณ์ไม่พร้อมในการเรียนออนไลน์ สามารถขอรับการช่วยเหลือขอยืมอุปกรณ์ Laptop/Tablet ตามนโยบายการช่วยเหลือของจุฬา - คณะวิศวกรรมศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย (chula.ac.th)

คลิกลิ้งค์ https://forms.gle/X4CDkcws3TZZT6pc7 หรือสแกน QR CODE

Page 5: Engineering Materials 2109101

ข้อตกลงรายวิชา

52109101 – Engineering Materials

นิสิตจุฬาฯ สามารถแจ้งความประสงค์ในการขอรับความช่วยเหลือเข้ามาได้ที่ฝ่ายกิจการนิสิตของแต่คณะ หรือผ่านระบบ CU NEX รวมถึงแจ้งผ่านเว็บไซต์ของส านักบริหารกิจการนิสิต จุฬาฯ www.sa.chula.ac.th

Page 6: Engineering Materials 2109101

เกณฑ์คะแนนและการตัดเกรด

62109101 – Engineering Materials

เกณฑ์คะแนน

90 (คะแนนสอบ) + 10 (จาก in-class quiz)

การตัดเกรด

เกณฑ์การตัดเกรด : อิงเกณฑ์+กลุ่ม

80up = A

Mean + 1x(SD) = B+

Mean + 0.5x(SD) = B

Mean = C+

Mean – 0.5x(SD) = C

Mean – 1x(SD) = D+

ที่เหลือ = D

น้อยกว่าหรือเท่ากับ 35 = F

Page 7: Engineering Materials 2109101

Course contents

72109101 – Engineering Materials

90%

• Metals and Alloys

• Ceramics

• Composites

MetallurgicalEngineering

• Concretes

• Asphalts

• Woods

• Construction steels

• Polymers

10% CivilEngineering

Page 8: Engineering Materials 2109101

Course contents

82109101 – Engineering Materials

Weeks Contents

1 Introduction

2 Crystal structure and Defects

3 Phases

4 Metals and Alloys

5 Mechanical properties of materials

6 Materials processing and heat treatment

7 Corrosion of materials

Mid-term Exam

8 Ceramics

9 Electrical properties of materials

10 Magnetic and Dielectric properties of materials

11 Construction materials

12 Polymers

13 Polymers

14 Composite materials

15 Innovation in Materials Technology

Final Exam

Page 9: Engineering Materials 2109101

Instructors from Department of Metallurgical Eng.

92109101 – Engineering Materials

Jatupon OpapaiboonLecturer

Chedtha Puncreobutr, Ph.D.Assistant professor

Jirapon Khamwannah, Ph.D.Lecturer

Nithi Saenarjhan, Ph.D.Lecturer

Page 10: Engineering Materials 2109101

Recommended Text Books

102109101 – Engineering Materials

[ไทย] “วัสดุศาสตร์และวิศวกรรมวัสดุพื้นฐาน” โดย สุวันชัย, กอบบุญ, เอกสิทธ์ิ, ธาชาย, มาวินและปฐมา, (สนพ. ท้อป)

[English]1. Materials Science and Engineering,

W. D. Callister, John Wiley & Sons Inc.2. Foundations of Materials Science and

Engineering, W. F. Smith, McGraw-Hill

Page 11: Engineering Materials 2109101

Lecture Notes & Videos

112109101 – Engineering Materials

Go to : www.MyCourseVille.com

Page 12: Engineering Materials 2109101

For Recorded Videos

122109101 – Engineering Materials

กดเพื่อเข้าไปยังวิดีโอที่มีการบันทึกไว้(Recorded meeting room)

อาจใช้เวลาในการประมวลผล VDO ซักระยะ หลังจากห้องเรียนเสร็จสิ้น

Page 13: Engineering Materials 2109101

Why study materials?

132109101 – Engineering Materials

• To produce lighter, more energy efficient, and longer lasting components for applications ranging from transport to tissue repair and etc.

Chedtha Puncreobutr

Page 14: Engineering Materials 2109101

Why study materials?

14

• 1989 Kegworth air crash, causedby fan blade loss of Boeing 737 due to excessive metal fatigue

• 1912, North Atlantic Ocean, sinking of RMS Titanic after colliding with an iceberg. Investigation suggested that higher DBTT in Titanic Steel made it extremely brittle at the -2 C water

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 15: Engineering Materials 2109101

Case study : Bike Frame

15

Should I get an Aluminium OR Steel OR Carbon Fibre frame?

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 16: Engineering Materials 2109101

Case study : Bike Frame

16

• Steel –

Strong, stiff, heavy, prone to rust, but cheap

• Aluminium –

weaker, lighter, more expensive than steel

• Carbon Fibre –

strong, stiff, very light, but expensive to buy and to fabricate

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 17: Engineering Materials 2109101

Who are Materials Engineers?

172109101 – Engineering MaterialsChedtha Puncreobutr

Page 18: Engineering Materials 2109101

What do Materials Engineers do?

182109101 – Engineering MaterialsChedtha Puncreobutr

Page 19: Engineering Materials 2109101

Processing – Structure – Properties - Performance

19

quenching

slow cooling

OFF

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 20: Engineering Materials 2109101

Processing – Structure – Properties - Performance

20

single-crystal(transparent)

polycrystalline,fully dense

(translucent)

polycrystalline, 5% porosity

(opaque)

Aluminum Oxide (Al2O3)

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 21: Engineering Materials 2109101

What do Materials Engineers do?

212109101 – Engineering MaterialsChedtha Puncreobutr

250 µm

Page 22: Engineering Materials 2109101

What do Materials Engineers do?

222109101 – Engineering MaterialsChedtha Puncreobutr

Page 23: Engineering Materials 2109101

What do Materials Engineers do?

232109101 – Engineering MaterialsChedtha Puncreobutr

Page 24: Engineering Materials 2109101

What are materials?

24

Substances out of which all things are made

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 25: Engineering Materials 2109101

Classification of Materials

25

Metals

Polymers Ceramics

Composites

Solid materials have been conventionally grouped into 3 categories based primarily on chemical makeup and atomic structure.

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 26: Engineering Materials 2109101

Metals

26

➢Metals are usually lustrous, malleable, and good conductors of electricity

➢Many metals are relatively strong and ductile at room temperature, and many maintain good strength even at high temperature.

➢ They are divided into 2 categories:➢ Ferrous: the group which contains mainly

iron (Fe). Iron is the most important metal in industrialized countries

➢Non-Ferrous: other metallic materials containing no iron like copper (Cu) or aluminium (Al)

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 27: Engineering Materials 2109101

Metals

27

+ + +

+

+

+ + +

+

++++

+ ++

“sea of electrons”

ionic

cores

Metallic Bond

• valence electrons are free to drift through the entire

material forming a “sea of electrons” surrounding net

positive ionic cores

Properties

• good conductors of

electricity and heat

• lustrous appearance

• susceptible to corrosion

• strong, but deformable

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 28: Engineering Materials 2109101

Ceramics

28

➢ Most ceramics are made up of two or more elements. For example, alumina (Al2O3), is a compound made up of aluminium atoms and oxygen atoms.

➢ The two most common chemical bonds for ceramic materials are ionic and covalent.

➢ In general, most ceramics are:➢ hard but brittle

➢ high melting points

➢ resistant to high temperature

➢ thermal insulators

➢ electrical insulators

➢ chemically stable

➢ low density

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 29: Engineering Materials 2109101

Ceramics

29

Ionic Bond

• Metallic elements give up valence

electrons to non-metallic elements

• Electron transfer

• Coulombic attraction

• Large difference in electronegativity

+ +

+ +

+

++

+

Coulombic bonding force

Covalent Bond

• Electrons are shared between

adjacent atoms, each contributing

at least one electron

• Shared electrons belong to both

atoms

• Electronegativity difference is

comparable

shared electron

from carbon

shared electron

from hydrogen

CH

H

H

H

methane (CH4)

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 30: Engineering Materials 2109101

Polymers

30

➢ Polymer is large molecule, or macromolecule, composed of many repeated subunits.

➢ Continuously linked backbone of a polymer consists mainly of carbon atoms

➢ Low density

➢ Varied strength and elasticity

➢ Low corrosion resistance

➢ Usually have low softening point

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 31: Engineering Materials 2109101

Composites

31

• A composite is a combination of two or more chemically distinct materials whose physical characteristics are superior to its constituents acting independently.

• Because of their high strength/stiffness to weight ratio, they are widely used in : • Aerospace industry• Offshore structures• Boats• Sporting goods

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 32: Engineering Materials 2109101

Materials and their properties

32

Den

sity

(g

/cm

3)

1

10

20

40

(1) Metal (2) Polymer (3) Ceramic (4) Composite

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 33: Engineering Materials 2109101

Materials and their properties

33

Den

sity

(g

/cm

3)

1

10

20

40

Metals

Ceramics

PolymersComposites

(1) Metal (2) Polymer (3) Ceramic (4) Composite

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 34: Engineering Materials 2109101

Materials and their properties

34

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(1) Metal (2) Polymer (3) Ceramic (4) Composite

2109101 – Engineering MaterialsChedtha Puncreobutr

Page 35: Engineering Materials 2109101

Materials and their properties

35

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2109101 – Engineering MaterialsChedtha Puncreobutr

Page 36: Engineering Materials 2109101

Contact Information

อาจารย์ จตุพล (อ.พีซ): [email protected]

อาจารย์ จิราภรณ์ (อ.ออย): [email protected]

อาจารย์ นิธิ (อ.เม่น): [email protected]

Line Chat:

Page 37: Engineering Materials 2109101

What's Coming Up Next

372109101 – Engineering MaterialsChedtha Puncreobutr

Fundamental towards Innovations

Page 38: Engineering Materials 2109101

ลิ้งค์แบบส ารวจความพร้อมของนสิิต

https://docs.google.com/forms/d/e/1FAIpQLScv_ata4I7qNto80VMcWzxqLGfeCRNLU9kcm4djCkDjokJGlQ/viewform