Acoustic vibration

Part 2 book "Mechanical design of electric motors" includes contents: Motor bearing, motor power losses, motor cooling, motor vibration and acoustic noise, motor testing, modeling, simulation, and analysis of electric motors, innovative and advanced motor design

394p dianmotminh01 17-05-2024 6 5   Download

The structural vibration acoustic radiation is commonly applied in controlling noise of structure. Basing on that, author controls acoustic radiation through the structure topography optimization.

8p vimarillynhewson 02-01-2024 7 3   Download

Part 1 of ebook "Principles of musical acoustics" provides readers with contents including: Chapter 1 - Sound, music, and science; Chapter 2 - Vibrations 1; Chapter 3 - Vibrations 2; Chapter 4 - Instrumentation; Chapter 5 - Sound Waves; Chapter 6 - Wave properties; Chapter 7 - Standing waves; Chapter 8 - Standing waves in pipes; Chapter 9 - Fourier analysis and synthesis; Chapter 10 - Sound intensity; Chapter 11 - The auditory system; Chapter 12 - Loudness perception;...

165p dangsovu 20-10-2023 6 4   Download

Ebook Mechanical engineers’ handbook - Volume 1: Materials and Engineering Mechanics (Fourth Edition) – Part 2 includes contents: Chapter 16 stress analysis; chapter 17 force measurement; chapter 18 resistive strain measurement devices; chapter 19 an introduction to the finite-element method; chapter 20 failure models: performance and service requirements for metals; chapter 21 failure analysis of plastics; chapter 22 failure modes: performance and service requirements for ceramics; chapter 23 viscosity measurement; chapter 24 tribology measurements; chapter 25 vibration and shock; chapter ...

474p haojiubujain03 09-08-2023 3 2   Download

Ebook Fundamentals of aerospace medicine: Part 1 presents the following content: The Beginnings: Past and Present; Respiratory Physiology and Protection Against Hypoxia; Physiology of Decompressive Stress; Human Response to Acceleration; Vibration and Acoustics;...Please refer to the documentation for more details.

308p chankora 16-06-2023 0 0   Download

This research has raised the question of whether the vibration transmission at a wall junction depends on how the wall is excited (by either a sound wave or a mechanical shaker). The aim of this research is to investigate this question and hence contribute to the revision of the series of standards. Villot and Guigou-Carter (2000) have considered this problem but their equations (10) and (13) appear to be in error. This research will endeavour to derive the correct equations and r epeat Villot and Guigou Carter’s calculations.

162p runthenight05 01-03-2023 5 2   Download

Surface resonance is a sound and tactile sensation research project. Through compositions and an installation, author focused on felt and heard vibration, how they are perceived and how they contribute to the experience of sound. The author this paper explored vibration as a product of low frequency (bass) sound, drawing inspiration from musical contexts where sensation from sound is emphasised.

112p runordie3 06-07-2022 5 1   Download

The perishable commodities after maturity they undergo the stage of ripening and tissue softening. The change in texture of fruits and vegetables occurs due to the breakdown of pectin substance in the middle lamella and the measurement of tissue softening is an important parameter to determine the shelf life of that commodity.

9p trinhthamhodang1215 23-09-2020 10 2   Download

Vibro-acoustic analysis of a finite orthotropic laminated double-composite plate with enclosed air cavity on an infinite acoustic rigid baffle is investigated analytically. Using the acoustic velocity potential to describe the acoustic vibration performance of a simple supported structure, the sound transmission loss (STL) is calculated from the ratio of incident to transmitted acoustic powers.

13p chauchaungayxua2 07-01-2020 18 0   Download

The problem of nonuniqueness (NU) of the solution of exterior acoustic problems via boundary integral equations is discussed in this article. The efficient implementation of the CHIEF (Combined Helmholtz Integral Equations Formulation) method to axisymmetric problems is studied. Interior axial fields are used to indicate the solution error and to select proper CHIEF points. The procedure makes full use of LU-decomposition as well as the forward solution derived in the solution. Implementations of the procedure for hard spheres are presented.

6p kethamoi1 20-11-2019 6 1   Download

(bq) the book "mechanical engineering series" presents modern developments in mechanical engineering and its innovative applications in applied mechanics, bioengineering, dynamic systems and control, energy, energy conversion and energy systems, fluid mechanics and fluid machinery, heat and mass transfer, manufacturing science and technology, mechanical design, mechanics of materials, micro- and nano-science technology, thermal physics, tribology, and vibration and acoustics.

264p bautroibinhyen19 02-03-2017 43 6   Download

A new procedure for calculation and analysis of dispersion relation and real atomic vibration of fcc crystals containing dopant atom has been developed using anharmonic effective potential. Analytical expressions for dispersion relation separated by acoustic and optical branches; forbidden zone; effective force constant; Debye frequency and temperature; amplitude and phase of real vibration of atomic chain containing dopant atom have been derived. They contain Morse potential parameters characterizing vibration of each pair of atoms. ...

8p tuanlocmuido 19-12-2012 47 2   Download

The science of acoustics deals with the creation of sound, sound transmission through solids, and the effects of sound on both inert and living materials. As a mechanical effect, sound is essentially the passage of pressure fluctuations through matter as the result of vibrational forces acting on that medium. Sound possesses the attributes of wave phenomena, as do light and radio signals. But unlike its electromagnetic counterparts, sound cannot travel through a vacuum.

663p waduroi 03-11-2012 63 8   Download

Acoustics is a discipline that deals with many types of fields wave phenomena. Originally the field of Acoustics was consecrated to the sound, that is, the study of small pressure waves in air detected by the human ear. The scope of this field of physics has been extended to higher and lower frequencies and to higher intensity levels. Moreover, structural vibrations are also included in acoustics as a wave phenomena produced by elastic waves. This book is focused on acoustic waves in fluid media and elastic perturbations in heterogeneous media....

0p ktcn_1 10-07-2012 80 8   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Regional distribution of acoustic-based lung vibration as a function of mechanical ventilation mode...

13p coxanh_3 25-10-2011 46 3   Download

The definition of comfort in a motor vehicle is at once complex and subjective, changing not only with time (cars considered comfortable just twenty years ago are nowadays considered unsatisfactory) but also from user to user. The same user may change his appraisal depending on circumstances and his psychophysical state. But comfort remains an increasingly important parameter in customer choice and strongly competitive factor among manufacturers.

80p hiruscar 19-10-2010 95 11   Download

NOISE AND DISTORTION 2.1 Introduction 2.2 White Noise 2.3 Coloured Noise 2.4 Impulsive Noise 2.5 Transient Noise Pulses 2.6 2.7 2.8 2.9 2.10 Thermal Noise Shot Noise Electromagnetic Noise Channel Distortions Modelling Noise N oise can be defined as an unwanted signal that interferes with the communication or measurement of another signal. A noise itself is a signal that conveys information regarding the source of the noise. For example, the noise from a car engine conveys information regarding the state of the engine.

15p khinhkha 30-07-2010 98 8   Download