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ME
474
Dynamics of Machines and Mechanical Vibrations Lab.
Experimental techniques in the study of mechanical vibrations and dynamics of machines, analysis and discussion of experimental results in formal reports.
Prerequisites:
(0630373 or 0630372),0630415
0630474
(0-3-1)

Textbook:

Laboratory handouts and notes

Reference:

  1. Mechanical Vibration, S.S. Rao, 6^h^ Edition, Prentice, 2018.
  2. W. Cleghorn and N. Dechev, Mechanics of Machines, 2nd Edition, Oxford University Press, 2014.

Coordinators:

Dynamics and Control TAG

Prerequisites by Topics:

  1. Rigid Body Dynamics.
  2. Free and Forced Vibration.
  3. Vibration of Multidegree-of-Freedom Systems.
  4. Dunkerley and Rayleigh Approximations.
  5. Balancing and Whirling.
  6. Fourier Series and Frequency Response.

Learning Objectives[^1]:

  1. To develop students' competence in the use of experimental tools for problem solving and design in the area of dynamics and vibrations (1,2,6)
  2. To provide opportunities for the students to practice communication and team-building skills, and to acquire a sense of professional responsibility, and to motivate and train the students to learn on their own (3,4,5).

Experiments: (Selected experiments from the following list)

  1. Cam Dynamics.
  2. Gyroscope and Gyroscopic Effects.
  3. Free Vibration of a 1-DOF System.
  4. Forced Vibration of a 1-DOF System due to a Rotating Imbalance.
  5. Forced Vibration of a 1-DOF System due to an Oscillating Support.
  6. Vibration Analysis Equipment: Forced Vibration due to an Applied Force.
  7. Lateral Vibration of Beams (Dunkerley's Formula-Dynamic Absorber).
  8. Torsional Oscillations of Rotors.
  9. Torsional Oscillations of a Single Rotor with Viscous Damping (using Universal Apparatus).
  10. Damped Transverse Vibrations of Rigid Beams.
  11. Whirling of Shafts.
  12. Balancing of Rotors: Static and Dynamic Balancing.
  13. Balancing of Rotors using a Vibration Meter and a Phase Meter (Vibration Analyzer).
  14. Torsional Vibration with Non-contact Laser Beam Transducer.
  15. Introduction to Vibration Analyser.
  16. Experimental Modal Analysis Using an FFT Analyser.
  17. Machine Condition Monitoring and Signature Analysis.
  18. Accelerometer and Vibration Level Calibration.
  19. Random Vibration: Methods of Analysis.

Computer Usage:

  1. For the experiments done, the students are required to use specialized software to acquire and analyse data, and to validate the results.
  2. Design of Experiment: Student teams are to be given which require the use of computer tools introduced.
  3. Laboratory reports are to be prepared by using appropriate computer-software (word processing, graphics, spreadsheets)

Evaluation:

  1. Exams.
  2. Quizzes.
  3. Reports.
  4. Oral presentation.
  5. Self and Team Assessment.
  6. Project.
  7. Lab participation.

Learning Outcomes:

Upon completion of this course, students will be able to:

Objective 1

1.1 recognize the basic theoretical framework for the experiments to be carried out.

1.2 carry out a particular experiment to demonstrate a phenomenon in dynamics or vibrations.

1.3 design an experiment or an experimental setup to solve an engineering problem, demonstrate a particular phenomenon or analyze failure.

1.4 validate and interpret the results of an experimental work.

Objective 2

2.1 document the results of an experimental study in a professional manner.

2.2 follow safety instructions.

2.3 understand the ethical and professional responsibilities involved with experimental work and practice them.

2.4 work harmoniously in a team.

2.5 acquire information not covered in the lectures.

Course Classification

Student Outcomes Level Relevant Activities
1. An ability to identify, formulate, and solve complex engineering problems by applying principles of engineering, science, and mathematics. H Math modeling of real engineering problems using theoretical concepts, Identify Vibration problems.
2. An ability to apply engineering design to produce solutions that meet specified needs with consideration of public health, safety, and welfare, as well as global, cultural, social, environmental, and economic factors. M Design of experiment with suitable setup using lab. Concepts, Project.
3. An ability to communicate effectively with a range of audiences. H Written -- reports
Oral -- Practical Exam / Presentation
4. An ability to recognize ethical and professional responsibilities in engineering situations and make informed judgments, which must consider the impact of engineering solutions in global, economic, environmental, and societal contexts. L Safety, Lab Ethics.
5. An ability to function effectively on a team whose members together provide leadership, create a collaborative and inclusive environment, establish goals, plan tasks, and meet objectives. M Subgroups and mini project teams.
6. An ability to develop and conduct appropriate experimentation, analyze and interpret data, and use engineering judgment to draw conclusions. H Experiments conducted in the lab.
7. An ability to acquire and apply new knowledge as needed, using appropriate learning strategies.

[^1]: Numbers in parentheses refer to the student outcomes