COURSE UNIT TITLE

: MACHINERY ACOUSTICS

DEGREE PROGRAMMES

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
MEE 5085 MACHINERY ACOUSTICS ELECTIVE 3 0 0 8

Offered By

Graduate School of Natural and Applied Sciences

Level of Course Unit

Second Cycle Programmes (Master's Degree)

Course Coordinator

ASSOCIATE PROFESSOR ABDULLAH SEÇGIN

Offered to

Machine Theory and Dynamics
Machine Theory and Dynamics

Course Objective

This course is mainly devoted to the basic principles of acoustics and propagation of sound in air. In the course, one can find mathematical derivations of sound wave theory, its transmission, reflection and scattering effects. Experimental
determinations of acoustic characteristics for a noisy machine such as its sound power, or a special room such as its reverberation time are also of concerns for this course.

Learning Outcomes of the Course Unit

1   To find out basic principles of sound and its propagation in a medium
2   To acquire skills to make mathematical derivations for wave theory of sound and its effects
3   To find out sound source types both in machinery and aero-acoustics
4   To have considerable knowledge to make noise control for a system
5   To become skilful at making experiments for machineries and special environments to determine their acoustical characteristics
6   To improve skill on making research and presentations on a subject

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 Basic Acoustical Quantities Decibel, particle velocity, sound pressure, intensity, power, impedance
2 Mathematical Terms for Acoustics Vectors, divergence, gradient, PDE solutions etc.
3 Principles of Sound and Sound Propagation Wave equation, impedances, waveguides, source types, radiation, transmission, reflection, scattering of sound wave.
4 Sound in Small Enclosures, Room Acoustics and Measurement of Reverberation Time Experiment 1: Measurement of reverberation time for Reverberation room.
5 Determination of Sound Characteristics and Source Directivity Sound pressure, intensity, power, directivity index etc.
6 Measurement of Sound Power Experiment 2: Determination of sound power of a noise source (Electric motor, computer, air cooler, washing machine etc.) in Reverberation Room
7 Mid-term Exam
8 Sound Wave-Structure Interaction
9 Duct Acoustics and Passive Silencers
10 Measurement of Transmission and insertion loss for ducts Experiment 3: Transmission and Insertion loss determination of ducts with and without anechoic termination.
11 Aeroacoustics
12 Active Noise Control and Noise Source Identification
13 Presentations and Open Discussions
14 Presentations and Open Discussions

Recomended or Required Reading

1. Beranek, L., Ver, I., Noise and Vibration Control Engineering: Principles and Applications, John Wiley&Sons, 1992.
2. Morse, PM., Ingard, KU., Theoretical Acoustics, McGraw Hills, 1986.
3. Bruel&Kjaer, Technical Notes. www.bandk.com.

Planned Learning Activities and Teaching Methods

Making presentations using computer-based environment, using blackboard to make derivations, performing experiments using measurement tools.

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 MTE MIDTERM EXAM
2 ASG ASSIGNMENT
3 PRS PRESENTATION
4 FIN FINAL EXAM
5 FCG FINAL COURSE GRADE MTE* 0.30 + ASG * 0.20 + PRS * 0.10 + FIN * 0.40
6 RST RESIT
7 FCGR FINAL COURSE GRADE (RESIT) MTE* 0.30 + ASG * 0.20 + PRS * 0.10 + RST * 0.40


Further Notes About Assessment Methods

None

Assessment Criteria

AC1: The learner will demonstrate, a) how sound wave behaves in a complex medium, b) what are mathematical backgrounds of sound wave and c) how sound waves interact with structure, by presenting at least two (2) report
AC2: The learner will present three (3) experiment reports on the determination of acoustical characteristics of machines and a reverberation room.
AC3: The learner will make one (1) presentation to discuss a special issue on machinery acoustics.

Language of Instruction

English

Course Policies and Rules

The students must attend the courses, must perform all experiments and must submit reports before the deadline.

Contact Details for the Lecturer(s)

Assist. Prof. Dr. Abdullah Seçgin
Dokuz Eylul University,
Faculty of Engineering,
Department of Mechanical Engineering,
Tinaztepe Campus, Buca, Izmir

Office Hours

11:00-12:00 on Monday's

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Lectures 13 3 39
Preparations before/after weekly lectures 12 4 48
Reading 14 3 42
Preparing presentations 12 3 36
Preparation for midterm exam 1 4 4
Preparation for final exam 1 5 5
Preparing assignments 3 4 12
Midterm 1 4 4
Final 1 4 4
Quiz etc. 3 3 9
TOTAL WORKLOAD (hours) 203

Contribution of Learning Outcomes to Programme Outcomes

PO/LOPO.1PO.2PO.3PO.4PO.5PO.6PO.7PO.8PO.9PO.10PO.11PO.12PO.13PO.14PO.15
LO.14
LO.2454
LO.32
LO.43
LO.554
LO.6343

CONTACT INFORMATION
Dokuz Eylül Üniversitesi Cumhuriyet Bulvarı No: 144 35210 Alsancak / İZMİR
Phone: +90(232) 412 12 12 - Fax: +90 (232) 464 81 35

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