Название: Noise Control: From Concept to Application, 2nd Edition Автор: Colin H. Hansen, Kristy L. Hansen Издательство: CRC Press Год: 2021 Страниц: 482 Язык: английский Формат: pdf (true) Размер: 10.1 MB
The second edition of Noise Control: From Concept to Application, newly expanded and thoroughly updated, now includes 180 graded problems with solutions, plus 100 end-of-chapter problems with solutions available for instructors on the authors’ website. Working from basic scientific principles, the authors show how an understanding of sound can be applied to real-world settings, working through numerous examples in detail and covering good practice in noise control for both new and existing facilities.
It covers the essential topics for industrial noise control: acoustics, noise criteria, hearing-damage risk, noise-assessment measures, measurement instrumentation, sound-source types including the calculation and measurement of their output power, sound propagation outdoors, sound in rooms, sound-absorbing materials, sound transmission through partitions and enclosures, noise barriers, reactive and dissipative muffler-noise reduction and muffler-design considerations such as pressure loss and self-noise generation.
When considering noise control, it is well-known that the most cost-effective solution to a problem is often to control the noise-generating mechanism right at its source. This often has the added benefit of making the process more efficient in addition to being less noisy. However, it is often (although not always) only manufacturers of equipment who can alter the noise-generating processes in their equipment, which leaves the engineer who is responsible for an existing item of noisy machinery to find some other way of reducing the noise that reaches places or people where it is either a hazard or unwanted. Often this treatment takes the form of enclosures, barriers, mufflers or vibration isolation and is referred to as “add-on” noise-control technology. Poorly designed “add-on” measures can prove cumbersome in use and are likely to be sabotaged by employees who see them as adversely affecting their efficiency and productivity.
Detailed explanations of important concepts make this textbook easy to understand by engineering and science undergraduates, as well as professionals with no background in acoustics.
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Noise Control: From Concept to Application, 2nd Edition 
Название: Noise Control: From Concept to Application, 2nd Edition