{"id":103186,"date":"2024-07-23T08:04:35","date_gmt":"2024-07-23T06:04:35","guid":{"rendered":"https:\/\/www.linseis.com\/sem-categoria\/determinacao-das-temperaturas-de-transformacao-de-amostras-de-aco-com-o-auxilio-de-pulverizacao-catodica-a-laser\/"},"modified":"2026-01-12T09:38:13","modified_gmt":"2026-01-12T08:38:13","slug":"determinacao-das-temperaturas-de-transformacao-de-amostras-de-aco-com-o-auxilio-de-pulverizacao-catodica-a-laser","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/pt-pt\/ultimas-noticias\/determinacao-das-temperaturas-de-transformacao-de-amostras-de-aco-com-o-auxilio-de-pulverizacao-catodica-a-laser\/","title":{"rendered":"Determina\u00e7\u00e3o das temperaturas de transforma\u00e7\u00e3o de amostras de a\u00e7o com o aux\u00edlio de pulveriza\u00e7\u00e3o cat\u00f3dica a laser"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"103186\" class=\"elementor elementor-103186 elementor-16629\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9eb8745 e-flex e-con-boxed e-con e-parent\" data-id=\"9eb8745\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ffaef65 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"ffaef65\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAtrav\u00e9s da medi\u00e7\u00e3o da altera\u00e7\u00e3o do comprimento dependente da temperatura, \u00e9 poss\u00edvel determinar a temperatura a que ocorre uma transforma\u00e7\u00e3o estrutural em amostras de a\u00e7o. No m\u00e9todo de speckle laser, a superf\u00edcie da amostra \u00e9 iluminada com um laser e observada de cima com uma c\u00e2mara. Ao mesmo tempo, a amostra \u00e9 aquecida com uma bobina de indu\u00e7\u00e3o. Um laser azul \u00e9 utilizado para filtrar a radia\u00e7\u00e3o de calor e a luz emitida pela amostra brilhante, e filtros apropriados s\u00e3o colocados em frente da c\u00e2mara.   \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1089cc3 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"1089cc3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Representa\u00e7\u00e3o esquem\u00e1tica da estrutura\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-194a95e elementor-invisible elementor-widget elementor-widget-image\" data-id=\"194a95e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"268\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Grafik-1-300x268-1.png\" class=\"attachment-large size-large wp-image-34129\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3857b9 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"d3857b9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Medi\u00e7\u00e3o<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cfa7bd8 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"cfa7bd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tDurante a medi\u00e7\u00e3o, a amostra \u00e9 aquecida indutivamente e os padr\u00f5es de manchas gerados pelo laser s\u00e3o observados simultaneamente com a c\u00e2mara. Dependendo da velocidade da medi\u00e7\u00e3o, podem ser registadas at\u00e9 50 imagens por segundo. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a9ea203 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"a9ea203\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Avalia\u00e7\u00e3o\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f296a60 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"f296a60\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tA c\u00e2mara gera estas sequ\u00eancias de imagens:\n\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-590e1d7 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"590e1d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Uma vez que as manchas s\u00e3o principalmente causadas por efeitos de interfer\u00eancia nas irregularidades da superf\u00edcie da amostra, o movimento das manchas na superf\u00edcie pode ser medido atrav\u00e9s do rastreio de \u00e1reas definidas pelo utilizador.<br>Um algoritmo especial baseado numa correla\u00e7\u00e3o cruzada de duas imagens consecutivas determina o movimento das \u00e1reas na imagem.<br><br>O tamanho e a posi\u00e7\u00e3o das \u00e1reas podem ser selecionados livremente pelo utilizador. Para al\u00e9m de seguir a dist\u00e2ncia total das \u00e1reas, a dire\u00e7\u00e3o de seguimento pode ser limitada a vertical e horizontal. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-721ede4 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"721ede4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"162\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Grafik-2-300x162-1.png\" class=\"attachment-medium_large size-medium_large wp-image-34133\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29c2b60 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"29c2b60\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Isto torna poss\u00edvel medir o comportamento de expans\u00e3o anisotr\u00f3pica das amostras. A expans\u00e3o medida \u00e9 independente da expans\u00e3o da haste de cisalhamento.<br>Uma grande vantagem em rela\u00e7\u00e3o \u00e0 medi\u00e7\u00e3o LVDT \u00e9 que a temperatura \u00e9 distribu\u00edda de forma muito mais homog\u00e9nea na pequena \u00e1rea registada pela c\u00e2mara do que em todo o comprimento da amostra. Isto significa que as transi\u00e7\u00f5es microestruturais podem ser reconhecidas mais claramente do que com o LVDT.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ac67eb elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"1ac67eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Compara\u00e7\u00e3o com a medi\u00e7\u00e3o da haste de impulso\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64ce74b elementor-invisible elementor-widget elementor-widget-image\" data-id=\"64ce74b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Grafik-3-300x169-1.png\" class=\"attachment-1536x1536 size-1536x1536 wp-image-34137\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e193bf elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"2e193bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tEsta imagem mostra o sinal de medi\u00e7\u00e3o do LVDT na dire\u00e7\u00e3o X (preto) e o sinal de medi\u00e7\u00e3o da c\u00e2mara de speckle na dire\u00e7\u00e3o Y (azul). Os pontos de in\u00edcio e fim das transi\u00e7\u00f5es de fase s\u00e3o mais claramente reconhec\u00edveis. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7396e18 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"7396e18\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Medi\u00e7\u00e3o de uma amostra de tra\u00e7\u00e3o\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b7959b elementor-invisible elementor-widget elementor-widget-image\" data-id=\"0b7959b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"262\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Grafik-4-300x262-1.png\" class=\"attachment-large size-large wp-image-34141\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c545a36 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"c545a36\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"127\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Messung-2-300x127-1.png\" class=\"attachment-large size-large wp-image-34145\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c33d3b elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"5c33d3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tPara amostras de tra\u00e7\u00e3o, a medi\u00e7\u00e3o da deforma\u00e7\u00e3o pode ser realizada definindo v\u00e1rias \u00e1reas independentes. \u00c9 poss\u00edvel seguir estas \u00e1reas e medir a expans\u00e3o entre estes pontos na dire\u00e7\u00e3o axial. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ad7e18 elementor-widget elementor-widget-spacer\" data-id=\"3ad7e18\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Medindo a altera\u00e7\u00e3o do comprimento dependente da temperatura, \u00e9 poss\u00edvel determinar a temperatura a que ocorre uma transforma\u00e7\u00e3o microestrutural nas amostras de a\u00e7o.<\/p>\n","protected":false},"author":3,"featured_media":34125,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[655],"tags":[],"class_list":["post-103186","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ultimas-noticias"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/posts\/103186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/comments?post=103186"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/posts\/103186\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/media\/34125"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/media?parent=103186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/categories?post=103186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/tags?post=103186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}