{"id":2779,"date":"2021-08-24T14:04:50","date_gmt":"2021-08-24T12:04:50","guid":{"rendered":"http:\/\/www.woodresearch.sk\/cms\/?p=2779"},"modified":"2021-08-24T14:04:52","modified_gmt":"2021-08-24T12:04:52","slug":"study-on-propagation-law-of-acoustic-emission-signals-on-anisotropic-wood-surface","status":"publish","type":"post","link":"https:\/\/www.woodresearch.sk\/cms\/study-on-propagation-law-of-acoustic-emission-signals-on-anisotropic-wood-surface\/","title":{"rendered":"Study on propagation law of acoustic emission signals on anisotropic wood surface"},"content":{"rendered":"\n<div class=\"wp-block-pdf-viewer-block-standard\" style=\"text-align:left\"><div class=\"uploaded-pdf\"><a href=\"https:\/\/www.woodresearch.sk\/cms\/wp-content\/uploads\/2021\/08\/Study-on-propagation-law-of-acoustic-emission-signals-on-anisotropic-wood-surface.pdf\" data-width=\"\" data-height=\"\"><\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In order to explore the influence of wood\u2019s anisotropic characteristics on Acoustic Emission (AE) signals\u2019 propagation, the law of AE signals\u2019 propagation velocity along different directions was studied. First, The center of the specimen\u2019s surface was took as the AE source, then 24 directions were chose one by one every 15\u00ba around the center, and 2 AE sensors were arranged in each direction to collect the original AE signals. Second, the wavelet analysis was used to denoise the original AE signals, then the AE signals were reconstructed by Empirical Mode Decomposition (EMD). Finally, time difference location method was utilized to calculate AE signals\u2019 propagation velocity. The results demonstrate that AE signals\u2019 propagation velocity has obvious feature of quadratic function. In the range of 90\u00ba, as the angle of propagation direction increases, the propagation velocity of the AE signals presents a downward trend.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1951],"tags":[244,2006,2005,245],"release_year":[],"ppma_author":[239,1906,237,238],"class_list":["post-2779","post","type-post","status-publish","format-standard","hentry","category-wood-research-volume-66-number-4-2021","tag-acoustic-emission","tag-empirical-mode-decomposition","tag-propagation-velocity","tag-wood"],"featured_image_src":null,"author_info":{"display_name":"Maro\u0161 Kov\u00e1\u010d","author_link":"https:\/\/www.woodresearch.sk\/cms\/author\/kovacvupc-sk\/"},"authors":[{"term_id":239,"user_id":0,"is_guest":1,"slug":"tingting-deng","display_name":"TINGTING DENG","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":1906,"user_id":0,"is_guest":1,"slug":"shuang-ju","display_name":"Shuang Ju","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":237,"user_id":0,"is_guest":1,"slug":"minghua-wang","display_name":"Minghua Wang","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":238,"user_id":0,"is_guest":1,"slug":"ming-li","display_name":"MING LI","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts\/2779","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/comments?post=2779"}],"version-history":[{"count":1,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts\/2779\/revisions"}],"predecessor-version":[{"id":2781,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts\/2779\/revisions\/2781"}],"wp:attachment":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/media?parent=2779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/categories?post=2779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/tags?post=2779"},{"taxonomy":"release_year","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/release_year?post=2779"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/ppma_author?post=2779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}