\n\tESDU 02009 provides methods for the estimation of averaged
\nradiation efficiencies of orthotropic, rectangular plates which are
\nsimply supported at all edges and surrounded by an infinite baffle.
\nIsotropic plates are also included as a special case of orthotropic
\nplates. The method used is approximate and based on an asymptotic
\napproach. The background to the subject and the nature of
\northotropic plates are explained. The document applies to plates
\nmade of naturally orthotropic materials, such as wood. It can also
\nbe used with equivalent orthotropic plates, such as ribbed,
\ncorrugated or honeycomb panels. Plates of composite materials, such
\nas carbon fibres in epoxy, are within the scope of the document. In
\norder to estimate the sound radiation efficiency the dimensions of
\nthe plate, the density and the bending stiffnesses are required.
\nTwo methods are available for the estimation of radiation
\nefficiencies. The first method is based on design curves presented
\nin the document and in the second method computer programs are
\nused. Each design curve is able to apply for a range of
\nnon-dimensional parameters which influence the radiation
\nefficiency. Use of the design curves gives results which are
\naccurate to within 2 dB. The results from the computer programs are
\nmore accurate than the results deduced from the design curves. The
\ncomputer programs provide output in one-third or one-sixth octave
\nbands. Applications are described for wooden and composite plates,
\ncorrugated and ribbed plates and honeycombs. Two appendices are
\nincluded. The first gives expressions for bending stiffnesses for
\ndifferent equivalent orthotropic plates. In the second appendix
\nmethods of deriving the bending stiffnesses of plates of composite
\nmaterials are described with examples which apply to a single layer
\n(Kevlar in epoxy) and to a hybrid sandwich with five layers. Two
\ncomputer programs, ESDUpacs A0209 and B0209 are provided with this
\nItem.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"
Sound Radiation from Orthotropic Rectangular Plates – Part I: Estimation by Asymptotic Method<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ESDU<\/b><\/a><\/td>\n 2011-05<\/td>\n NA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557261","1":"product","2":"type-product","3":"status-publish","5":"product_cat-esdu","7":"first","8":"instock","9":"sold-individually","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/557261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557261"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557261"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}