Acoustics: Metamaterials and Membranes
Learn how acoustic metamaterials and membranes influence environmental noise in this free online course.
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This free online course on Acoustic Metamaterials and Membranes introduces you to the study of acoustic principles and applications to help control environmental noise. The study of electromagnetic waves and acoustic waves dates back centuries. In this regard, acoustic metamaterials which are materials that are designed to manipulate soundwaves, are of prime importance.
Next, you will learn the mass frequency law and the exceptions to it. You will also learn the Limitations of conventional acoustic materials. You will explore what acoustic metamaterials are and their bulk acoustic properties. You will learn the effective mass densities and principles of the metamaterials. These have the potential to impact areas such as machinery noise control, frequency filtering, speech transmission technology, acoustic imaging and cloaking.
Finally, the course covers the topics such as membrane negative effective mass densities and vibration response. It will introduce you to the different Unit Cell types and the different classifications and effects of them. By studying this course, you will have a distinct advantage in understanding these latest materials and how they can be applied.Start Course Now
Acoustic Metamaterials- Learning Outcomes
Introduction to Acoustic Metamaterials
History of Acoustic Metamaterials
Applications of Acoustic Metamaterials
Acoustic Metamaterials - Lesson Summary
Membrane Type of Acoustic Metamaterials
Membrane Types and Acoustic Metamaterials- Learning Outcomes
Classification and Vibration
Effective Mass Densities
Membranes with Attached Mass
Negative Effective Mass Density
Advantages and Applications
Membrane Types and Acoustic Metamaterials- Lesson Summary
On completion of this course, you will be able to:
- Evaluate and describe the Mass Frequency Law
- Discuss the exceptions and Limitations of this Law
- Discuss bulk acoustic properties and principles
- Recall the history of metamaterials and explain Acoustic Cloaking, Sound Fields and Superlens
- Distinguish between Limp and Stiff Membranes
- Discuss Effective Mass Density
- Classify Type 1 and 2 Unit Cells and their properties
- Discuss the advantages and applications of these Unit Cells and AMMs
- Explain both the region and effect of Negative Effective Mass Density
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