{"id":557438,"date":"2024-11-05T18:18:02","date_gmt":"2024-11-05T18:18:02","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-090062011\/"},"modified":"2024-11-05T18:18:02","modified_gmt":"2024-11-05T18:18:02","slug":"esdu-090062011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-090062011\/","title":{"rendered":"ESDU 09006:2011"},"content":{"rendered":"<p>\n\tThis Item is concerned with material damping, a type of damping<br \/>\nwhich is intrinsic in a structure in vibration. The emphasis is on<br \/>\nmaterials which have engineering applications. Small amounts of<br \/>\ndamping at low stress levels can arise in all materials from<br \/>\nthermoelasticity, which is amplitude-independent and<br \/>\nfrequency-dependent. With high applied stress, the damping is<br \/>\nnonlinear. Nonlinear damping in metals and alloys is<br \/>\namplitude-dependent and frequency-independent. The main mechanisms<br \/>\nresponsible for nonlinear damping are associated with<br \/>\namplitude-dependent dislocations, magnetostriction, the<br \/>\nheterogeneous structure of materials and phase transformations, all<br \/>\nof which can give rise to relatively high damping with SDC values<br \/>\nabove 10%. In the case of composites, where fibres are embedded in<br \/>\na matrix, the damping is associated with damping within the matrix,<br \/>\nas well as that which originates from relative slipping between the<br \/>\nmatrix and the fibre reinforcement. Metallic materials with high<br \/>\ndamping and good engineering properties are referred to as Hidamets<br \/>\nand have specific damping capacities in excess of 10%. The damping<br \/>\nof different materials has been compared in the Item. Composites<br \/>\nhave SDC values from 0.5 to 15%. The damping of steels has a wide<br \/>\nrange of SDC values from 0.05 to 5%, with the higher values<br \/>\noccurring because of magnetomechanical damping. Hidamets include<br \/>\ncast irons with a coarse flake structure and alloys of manganese<br \/>\nwith copper.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Material Damping<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/esdu\/\"><b>ESDU<\/b><\/a><\/td>\n<td>2011-05<\/td>\n<td>25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":557447,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557438","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-esdu","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/557438","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:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/557447"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557438"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557438"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}