ME 525 Course Description

APPLIED ACOUSTICS: Mechanical Engineering 525

Lectures: MWF, 11:30-12:20 Spring Quarter 2008

Instructors: Professor Peter Dahl
Instructor Contact: dahl@apl.washington.edu, 206.543.2667

Textbook: Foundations of Engineering Acoustics, by Frank Fahy, Elsevier, 2001. Additional references provided by instructor.

Prerequisites: Graduate standing, or permission from instructor. Familiarity with Matlab or equivalent application for use in homework-related data analysis and problems.

Homework: Homework will be assigned weekly in the class or communicated by email.

Grading Policy:
1/3 Homework
1/3 Mid term (Exam 1, take home)
1/3 Final (Exam 2, take home)

Course philosophy and goal: To introduce acoustics through its various applications and sub-fields, such as medical ultrasound, sonar and underwater sound, noise control and vibrations. The student obtains both a new perspective, and valuable working knowledge that can be applied to his or her particular field of research.

Days	Topic
5	Sound wave phenomena (Chapter 2) Sound waves in fluids (Chapter 3) Introduction to linear acoustics, wave equation, plane-wave and spherical-wave solutions, acoustic scales
4	Impedance (Chapter 4) mechanical-, acoustic-, and radiation-impedance
5	Sound Energy and Intensity (Chapter 5) Essential concepts in sound intensity and power, and applications
	Take home Exam 1 on above topics (approx May 2, exact date TBD)
5	Acoustic Sources: (Chapter 6) simple sound sources, large & small ka limits, more complex sound sources, the Rayleigh integral Fresnel, Fraunhofer regions
4	Reflection, and propagation in air and underwater: ray theory
3	Propagation underwater: Normal mode theory, Pekeris waveguide
1	Ambient noise in air and underwater environments, spectral methods
3	Applications in medical and industrial ultrasound, case studies
	Take home Exam 2 (approx June 6, exact date TBD)

Noise from different environments in air and underwater

Noise pressure spectral density from an EA-6B jet flyover measured over water. The streaks are the result of interference between the direct path of sound from the jet, and a path reflected from the sea surface (the Lloyd mirror effect). The jet is directly over the microphone at time 25 s.

EDGE INFORMATION
Distance Learning Details:	For information on how to participate as an EDGE student, see the Course Access page.
Lectures:	Class meets on campus three times per week. EDGE students view these lectures via streaming video, CD-ROM or videotape. Students who are watching live may call into the classroom with questions, and office hours will be conducted through web conferencing.
Computer Requirements:	PC (Windows, Macintosh or Solaris) with Internet connectivity at 56 Kbps or higher (384 Kbps strongly recommended for streaming video); sound card; Microsoft Windows Media Player version 7.0 or greater; and Adobe Acrobat Reader version 4.0 or greater. Students choosing to receive CD-ROMs or videotapes must still have Internet access.
Credits:	3 credits. Audit option available.
Cost:	$1,860 ($620 per credit) plus textbooks, supplies and $35 registration fee, and $13 Technology Fee. Optional borrowing of CD-ROMs or videotapes is available for an additional fee.
Registration:	See the EDGE Program How to Apply page for information on taking a course as a non-matriculated student. Registration should be completed by March 17, 2008. Registration after this date will be accepted on a space-available basis. To earn credit toward a graduate degree, apply for Graduate Non-Matriculated (GNM) status by March 1, 2008.
For more information:	UW/EDGE Program University of Washington 4311 11th Avenue NE Seattle, WA 98105 Phone: 206.685.2242 Fax: 206.616.9704 edgeuw@u.washington.edu www.engr.washington.edu/edge/