DESIGN OF MACHINE ELEMENTS (3351902)  

5
Credit
3 + 0 + 2
Lect + Tuto + Pract
Teaching Scheme
70 + 30 + 0
ESE + PA + ALA
Theory Marks
20 + 0 + 30
ESE + OEP + PA
Practical Marks
ESE - End Semester Examination, PA - Progress Assessment, ALA - Active Learning Assignments, OEP -Open Ended Problem


Rationale
For production of machine parts and components it is required that specific shape and size of machine parts are determined and their drawings are prepared. We also have to select specific material for that product. This process is called as design. In designing a machine component it is necessary to have a good knowledge of many subjects such as Mathematics, Engineering Mechanics, Strength of Materials, Theory of Machines, Workshop Processes and Engineering Drawing. Students have learnt these subjects in previous semesters. This course curriculum provides the students’ knowledge of design process, as well as familiarity with design of components subjected to various stresses and moments like direct stress, bending stress, twisting moment and combined stresses. In this course students will learn design of machine components/elements like cotter joint, knuckle joint, power screw, levers, helical and leaf springs, couplings, pressure vessels, bearings, etc.
Course Outcome
The theory should be taught and practical should be carried out in such a manner that students are able to acquire different learning objectives in cognitive, psychomotor and affective domain to demonstrate following course outcomes.

i. Identify various failures and calculate resisting areas of machine elements.
ii. Use preferred numbers and standardization to select element/element dimension.
iii. Design machine element subjected to:
a: Direct stresses.
b: Bending stresses.
c: Twisting stresses.
d: Combined stress.
iv. Design of thin and thick cylinder pressure vessel.
v. Select appropriate bearing for given situation/application.
vi. Calculate important bearing characteristics.

Active Learning
a. Chp:1 Introduction.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_home.html
b. Chp:2 Design of Machine elements subjected to direct stresses.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod4.html
c. Chp: 3 Design of Machine elements subjected to Bending stresses.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod7.html.
d. Chp:4 Design of Machine elements subjected to direct and twisting moments.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod4.html
ii. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod5.html
iii. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod8.html
e. Chp: 5 Design of Machine elements subjected to direct and bending stresses.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod11.html
f. chp: 6 Design of Pressure vessels.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod9.html
g. Chp:7 Selection Procedure for bearings.
i. http://nptel.ac.in/courses/Webcoursecontents/IIT%20Kharagpur/Machine%20design1/left_mod14.html
h. Chp:ALL
i. https://www.machinedesignonline.com/MDO_Portal/design_component.html