MACHINE DESIGN | , Engineering Mechanics | Strength of Materials | Theory of Machines | Machine drawing and Workshop Processes| DIPLOMA 5th and 6th Semester

  MACHINE DESIGN 

 


Course Title: MACHINE DESIGN

Scheme (L:T:P) : 4:0:0

Total Contact Hours: 52

Course Code:

15ME53T

Type of Course: Lectures, Self Study & Quiz

Credit :04

Core/ Elective:

Core

CIE- 25 Marks                                                                                                         SEE- 100 Marks

Prerequisites: Knowledge of Mathematics, Engineering Mechanics, Strength of Materials, Theory of Machines, Machine drawing and Workshop Processes

 Course Objectives:                                                                                                     

This course curriculum provides the knowledge of design process, as well as enables the student to design simple machine components used in small and medium scale industries.

 COURSE OUTCOMES                                                                                                     

On successful completion of the course, the students will be able to:

 

Course Outcome

CL

Linked PO

Teaching Hrs

 

CO1

Understand the concept of design and behavior of material under varying load conditions, Use of design data books

while designing machine components

 

R

 

2

 

04

 

CO2

Design of bolts, nuts, and riveted joints subjected to direct stresses and analyze the type of stresses induced under

different load conditions

 

R/U/A/An

 

1,2

 

12

 

CO3

Design of machine elements subjected to direct and twisting moments and analyze the type of stresses induced under

different load conditions

 

U/A

 

1,2,

 

10

 

 

 

CO4

Design of machine element like Solid Muff Coupling- flange coupling subjected to direct and twisting moments and Knuckle joint-Cotter joint subjected to

direct stress and analyze the various modes of failure(with numeric examples)

 

 

A / An

 

 

1,2

 

 

14

CO5

Design procedure of machine elements subjected to twisting moment and analyze

the type of stresses induced in them

 

R/U/A

1,2

08

 

CO6

Know the Principles of design as per ergonomic, and Environmental considerations

 

R/U

 

2

 

04

 

Total sessions

52

Legend: R; Remember, U: Understand A: Application


 COURSE-PO ATTAINMENT MATRIX                                                                                                     

 

Course

Programme Outcomes

1

2

3

4

5

6

7

8

9

10

MACHINE DESIGN

2

3

0

0

0

0

0

0

0

0

Level 3- Highly Addressed, Level 2-Moderately Addressed, Level 1-Low Addressed.

Method is to relate the level of PO with the number of hours devoted to the COs which address the given PO. If >40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 3

If 25 to 40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 2 If 5 to 25% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 1

If < 5% of classroom sessions addressing a particular PO, it is considered that PO is considered not-addressed.

 

COURSE CONTENT AND BLUE PRINT OF MARKS FOR SEE

 

Unit No

 

Unit Name

Hour

Questions to be set for SEE/MARKS

Marks weightage

weightage (%)

R

U

A/An/Ev/cre

 

 

 

1

INTRODUCTION TO DESIGN

04

 

05

--

--

 

05

 

6.89

2

DESIGN OF FASTENERS

12

05

05

30

40

20.68

 

3

DESIGN OF SHAFTS, KEYS

10

 

--

05

15

 

20

 

17.27

 

4

DESIGN OF SIMPLE MACHINE PARTS

14

 

---

----

50

 

50

 

34.48

5

DESIGN OF SPRINGS

08

--

05

15

20

13.79

 

 

6

ERGONOMICS & AESTHETIC

CONSIDERATION IN DESIGN

 

04

 

 

05

 

05

 

--

 

 

10

 

 

6.89

 

Total

52

15

20

110

145

100

Text Box: UNIT I: INTRODUCTION TO DESIGN	04Hrs

Machine Design–Classification-General considerations-Load-stress-strain,-stress-strain diagram for mild steel- Bending and torsion stress equations - Factor of Safety and Factors governing selection of factor of Safety- Stress Concentration – Causes & Remedies- Designation of materials as per IS- using of design data book Concept of Theory of failure- types.

Text Box: UNIT II: DESIGN OF FASTENERS	12Hrs

Stresses in Screwed fasteners- bolts of Uniform Strength- Design of Bolts - Design of studs

for cylinder cover-simple problems on design of bolts subjected to external force -Design of Riveted joints -classification- Important terms used in riveted joints-materials for rivets- Failures of riveted joints-Strength and efficiency of riveted joints-Simple problems on Single and Double riveted lap joint -Single and Double riveted Butt joint (with single and double strap)


 

UNITIII: DESIGN OF SHAFTS, KEYS                                                          10Hrs

 
Types of Shafts- Shaft materials-Standard Sizes- Design of Shafts (Hollow and Solid) using strength and rigidity criteria-design for line shafts supported between bearings with one or two pulleys in between or one overhung pulley.

Keys-Types-Design of Sunk Keys, Effect of Keyways on strength of shaft-Simple problems (excluding keyways).

Text Box: UNIT IV: DESIGN OF SIMPLE MACHINE PARTS	14Hrs

Design of Couplings – Solid Muff Coupling- Flange coupling (Protected and Unprotected

Text Box: UNIT V: DESIGN OF SPRINGS	08Hrs

type) - Cotter Joint - Knuckle Joint

Spring – terminology, materials and specifications-Classification and Applications of

Text Box: UNIT VI: ERGONOMICS & AESTHETIC CONSIDERATION IN DESIGN	4Hrs

Springs- Stresses in springs, Wahl’s correction factor, Deflection of springs-Design of Helical compression springs subjected to uniform applied loads like I.C. engine valves, weighing balance, railway buffers and governor springs-Problems on helical compression springs only- Leaf springs – Construction and application

Ergonomics of Design-Man-Machine relationship-Equipments for control-Ergonomics

considerations in design of controls-Equipments for display-Ergonomics considerations in design of display.-Aesthetic considerations regarding shape, size, color (Morgan’s code).

®REFERENCES

 

Sl.No.

Title of Books

Author

Publication

1.

A Text book of Machine Design

R.S. Khurmi & J.K.Gupta

 

S. Chand publication

2.

Machine design

S G Kulkarni

McGraw Hill

Education Publications

3

Introduction to Machine design

V B Bhandari

 

McGraw Hill Education Publications

4.

Design Of Machine Elements

Vol I, Vol II

J.B.K. Das , P.L.

Srinivas Murthy

Sapna Publication

5

Machine Component Design

William Orthwein

Jaico publication

6

Design Data Hand Book for Mechanical Engineers

 

K Mahadevan & K Balaveera Reddy

 

CBS publications

 LIST SOFTWARES/WEBSITES                                                                                                     

 

1. http://nptel.ac.in/courses/Webcourse-

 contents/IIT%20Kharagpur/Machine%20design1/left_home.html 2 http://nptel.ac.in/courses/Webcourse-

 contents/IIT%20Kharagpur/Machine%20design1/left_mod4.html


3.   http://nptel.ac.in/courses/Webcourse-

 contents/IIT%20Kharagpur/Machine%20design1/left_mod7.html .

4.   http://nptel.ac.in/courses/Webcourse-

 contents/IIT%20Kharagpur/Machine%20design1/left_mod4.html

5.   http://nptel.ac.in/courses/Webcourse-

 contents/IIT%20Kharagpur/Machine%20design1/left_mod5.html

6.   http://nptel.ac.in/courses/Webcourse-

 contents/IIT%20Kharagpur/Machine%20design1/left_mod8.html

 

 SPECIAL INSTRUCTIONAL STRATEGIES                                                                                                     

 

UNIT NO

UNIT NAME

STARATEGIES

 

1

 

INTRODUCTION TO DESIGN

Lectures, Discussions ,cooperative learning

group    based    learning,    Think-Pair-share activities among group of students

 

2

 

DESIGN OF FASTENERS

Lectures, discussions, cooperative learning

group    based    learning,    Think-Pair-share activities among group of students

 

3

 

DESIGN OF SHAFTS, KEYS

Lectures, cooperative learning group based

learning, Think-Pair-share activities among group of students

 

4

 

DESIGN OF SIMPLE MACHINE PARTS

Lectures, cooperative learning group based

learning, Think-Pair-share activities among group of students Industrial visits, movies.

 

5

 

DESIGN OF SPRINGS

Lectures, cooperative learning group based

learning, Think-Pair-share activities among group of students Industrial visits, movies

 

6

ERGONOMICS & AESTHETIC CONSIDERATION IN DESIGN

Discussions, real life industries situation, industrial visits

 

 SUGGESTED LIST OF STUDENT ACTIVITYS                                                                                                     

Note: the following activities or similar activities for assessing CIE (IA) for 5 marks (Any one)

å         Each student should do any one of the following type activity or similar activity related to the course and before take up, get it approved from concerned Teacher and HOD.

å         Each student should conduct different activity and no repeating should occur

1

The students should identify at least five applications .He should select the materials for identified applications by using design data hand book. List the mechanical

properties of material selected.

2

Observe the system where transmission of power takes place through shaft, Keys, coupling, pulley and belt drive. Get the required information regarding power transmitted (power output by motoror engine etc.). By selecting suitable materials,

design the shaft, key and coupling.

3

Assignments on design of Helical Springs, Screwed joints, Riveted joints [one each]

with free hand sketches.

4

The student should Download and present various presentations related to design of

machine elements

5

The student should Download and present various presentations related to stresses in

machine elements.


6

The student should Download and present various presentations related to failure of

machine elements.

 

 

Course Assessment and Evaluation Scheme:                                                                                                    

 

 

What

To who

m

When/Where (Frequency in

the course)

Max Marks

Evidence collected

Course outcomes

Direct Assessment

CIE

IA

 

 

 

Three IA tests(Average of three tests will be

computed)

 

20

 

Blue books

 

 

1,2,3,4,5,6

Student

Activities

05

Activity sheets

SEE

End

Exam

End of the course

100

Answer scripts

at BTE

1,2,3,4,5,6

Indirect Assessment

Student

Feedback on course

 

 

 

Middle of the course

 

Feedback forms

1,2,3

Delivery of course

End of Course Survey

End of the course

 

 

 

Questionnaires

1,2,3,4,5,6

Effectiveness of Delivery of instructions & Assessment

Methods

 

CIE- Continuous Internal Evaluation      SEE- Semester End Examination

 

Note: I.A. test shall be conducted for 20 marks. Average marks of three tests shall be rounded off to the next higher digit.

 

Note to IA verifier: The following documents to be verified by CIE verifier at the end of semester

 

1.       Blue books ( 20 marks)

2.       Student suggested activities report for 5 marks evaluated through appropriate rubrics.

3.       Student feedback on course regarding Effectiveness of Delivery of instructions & Assessment Methods


 

RUBRICS MODEL

 

RUBRICS FOR ACTIVITY( 5 Marks)

 

Dimension

Unsatisfactory

Developing

Satisfactory

Good

Exemplary

Student Score

1

2

3

4

5

 

Collection of data

Does not collect any information relating to the topic

Collects very limited information;

some relate to the topic

Collect much information; but very

limited relate to the topic

Collects some basic information;

most refer to the topic

Collects a great deal of information;

all refer to the topic

Ex: 4

Fulfill team’s roles & duties

Does not perform any duties assigned to the team role

Performs very little duties but unreliable.

 

Performs very little duties

Performs nearly all duties

Performs all duties of assigned team roles

 

 

5

 

Shares work equally

 

Always relies on others to do the work

Rarely does the assigned work; often needs reminding

Usually does the assigned work; rarely needs reminding

 

Normally does the assigned work

Always does the assigned work without having to be reminded.

 

 

3

 

Listen to other Team mates

 

Is always talking; never allows anyone else to speak

Usually does most of the talking; rarely allows others to speak

Talks good; but never show interest in listening others

 

Listens, but sometimes talk too much

 

Listens and speaks a fair amount

 

 

2

Average / Total marks=(4+5+3+2)/4=14/4=3.5=4

 

Note: This is only an example. Appropriate rubrics/criteria may be devised by the concerned faculty (Course Coordinator) for assessing the given activity.

 

Note to IA verifier: The following documents to be verified by CIE verifier at the end of semester

4.       Blue books ( 20 marks)

5.       Student suggested activities report for 5 marks

6.       Student feedback on course regarding Effectiveness of Delivery of instructions & Assessment Method


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