Design of Machine Elements (Diploma)

Design procedure, design of joints, shafts, keys, couplings, springs and bearings.

6 MonthsDuration 6Chapters27Topics

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Syllabus · पाठ्यक्रम

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01Introduction to Design 6 topics

Design procedure and considerations
Engineering materials and their designation
Types of loads and stresses
Factor of safety and stress concentration
Theories of failure
Preferred numbers, standardisation

02Design of Joints 4 topics

Riveted joints: failures and efficiency
Welded joints: butt and fillet welds
Cotter joint
Knuckle joint

03Design of Shafts and Keys 4 topics

Shaft materials and standard sizes
Shafts under torsion
Shafts under combined bending and torsion
Types of keys and design of a sunk key

04Design of Couplings 4 topics

Types of couplings
Muff coupling
Rigid flange coupling
Bushed-pin flexible coupling

05Design of Springs 5 topics

Types and uses of springs
Spring terms: spring index, stiffness, solid length
Stresses and deflection in helical springs
Wahl's factor
Leaf springs (introduction)

06Bearings 4 topics

Sliding and rolling contact bearings
Journal bearing terms
Types of rolling bearings
Rating life and selection from manufacturer's catalogue

About

You will be able to

Follow the general design procedure and select materials and factor of safety
Apply theories of failure and allow for stress concentration
Design riveted, welded, cotter and knuckle joints
Design shafts for torsion and combined loading and select keys
Design muff, flange and bushed-pin couplings
Design helical springs and select rolling contact bearings from catalogues

Who it is for

Diploma Mechanical Engineering students of Semester 5 (BTEUP)
Diploma Production and Automobile students
Students preparing for JE-level technical exams

What you need

Strength of Materials and Engineering Drawing of earlier semesters

Questions

Is a design data book used?

Yes. Students learn to use the PSG / standard design data book and IS tables as allowed in the exam.

Are drawing sheets part of the course?

Yes. Designed joints, couplings and shafts are also drawn to scale as per the syllabus.

Is this course based on the BTEUP syllabus?

Yes. The units follow the BTEUP (Board of Technical Education, Uttar Pradesh) diploma syllabus. If your polytechnic follows a different board or a revised scheme, the centre teaches your own syllabus.