Acoustics of Wood - download pdf or read online

By Voichita Bucur

ISBN-10: 3540261230

ISBN-13: 9783540261230

ISBN-10: 3540305947

ISBN-13: 9783540305941

From the experiences of the first edition:

"It would definitely stay the main complete paintings during this box for a very long time to return. It belongs at the bookshelf of each fabric scientist and structural engineer."

CAS magazine, USA

"...[T]he writer has performed an admirable activity, gathering, organizing, and reviewing the disparate literature on so much elements of the Acoustics of Wood."

Journal of the Acoustical Society of the United States, USA

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Sample text

1 Elastic Symmetry of Propagation Media Because this chapter aims to provide the theoretical basis needed to understand wave propagation phenomena in solids, it was decided to analyze, first, the elastic symmetry of media of various complexity. For solid wood and for wood-based composites, orthotropic and transverse isotropic symmetries are most frequently observed. For simplicity, we will start by analyzing the isotropic solid. The solids are supposed to be homogeneous. 1 Isotropic Solids The simplest elastic symmetry is that of an isotropic solid, with only two independent constants, λ and µ.

Increased attention has been given to the utilization of solid wood and wood-based composites as acoustical insulators in floors, ceilings, and walls. ). In this section we confine our discussion to the case of houses, for which the reduction of indoor and outdoor noise sources is of major concern. Outdoor noise sources are principally produced by traffic and different activities (commercial, industrial, or others). Indoor sources are produced by automatic home appliances, heating, air-conditioning, and sanitary systems, entertainment devices, musical instruments, radio, TV, conversations, floor-impact noise, children jumping and running, adults walking, 24 Wood and Wood-Based Materials in Architectural Acoustics etc.

1992), row volume (McCornnell et al. 1984), canopy volume (Tumbo et al. 2002), and ratio of height to depth (Reynolds and Wilson 1989) in a variety of forestry situations. With an ultrasonic tree caliper it is possible to measure the stem diameter, measuring the time interval for the ultrasonic wave to travel from the transducer to the stem and back to the sensor. 05 cm). Tree row volume is based also on the measurement of distances, using transducers on a vertical mast attached to a tractor, which are able to scan the volumetric outline of one side of a tree at a fixed distance from the central line of the tree row and at fixed selected horizontal intervals.

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Acoustics of Wood by Voichita Bucur

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