{"id":719,"date":"2018-11-19T14:27:00","date_gmt":"2018-11-19T14:27:00","guid":{"rendered":"https:\/\/olgapayan.com\/?p=719"},"modified":"2025-04-04T12:28:25","modified_gmt":"2025-04-04T12:28:25","slug":"les-tecniques-radiografiques-aplicades-a-lestudi-i-diagnostic-de-lestat-de-conservacio-dels-bens-culturals","status":"publish","type":"post","link":"https:\/\/olgapayan.com\/es\/les-tecniques-radiografiques-aplicades-a-lestudi-i-diagnostic-de-lestat-de-conservacio-dels-bens-culturals\/","title":{"rendered":"Las T\u00e9cnicas Radiogr\u00e1ficas Aplicadas al Estudio y Diagn\u00f3stico del Estado de Conservaci\u00f3n de los Bienes Culturales"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00bb1&#8243; specialty=\u00bbon\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_padding=\u00bb||15px|||\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column type=\u00bb3_4&#8243; specialty_columns=\u00bb3&#8243; _builder_version=\u00bb4.16&#8243; custom_padding=\u00bb|||\u00bb global_colors_info=\u00bb{}\u00bb custom_padding__hover=\u00bb|||\u00bb][et_pb_row_inner _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_padding=\u00bb||0px|||\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column_inner saved_specialty_column_type=\u00bb3_4&#8243; _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb||18px|||\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<h2>LES T\u00c8CNIQUES RADIOGR\u00c0FIQUES APLICADES A L\u2019ESTUDI I DIAGNOSI DE L\u2019ESTAT DE CONSERVACI\u00d3 DELS B\u00c9NS CULTURALS<\/h2>\n<p>[\/et_pb_text][et_pb_image src=\u00bbhttps:\/\/olgapayan.com\/wp-content\/uploads\/2025\/04\/First_medical_X-ray_by_Wilhelm_Rontgen_of_his_wife_Anna_Bertha_Ludwigs_hand_-_18951222.gif\u00bb title_text=\u00bbFirst_medical_X-ray_by_Wilhelm_R\u00f6ntgen_of_his_wife_Anna_Bertha_Ludwig&#8217;s_hand_-_18951222&#8243; align=\u00bbcenter\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb text_font_size=\u00bb14px\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<p style=\"text-align: center;\">De Wilhelm R\u00f6ntgen. &#8211; [1], Domini p\u00fablic, https:\/\/commons.wikimedia.org\/w\/index.php?curid=5059748<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0&#8243; global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;]<\/p>\n<p>Per a l\u2019estudi dels materials constitutius dels nostres b\u00e9ns culturals, tamb\u00e9 \u00e9s molt interessant l\u2019\u00fas de t\u00e8cniques d\u2019imatge de car\u00e0cter no destructiu que no produeixen cap mena de deteriorament. Amb les t\u00e8cniques radiogr\u00e0fiques disposem d\u2019unes eines que ens permeten obtenir informaci\u00f3 sobre la materialitat de l\u2019obra, les t\u00e8cniques de fabricaci\u00f3 i el seu estat de conservaci\u00f3. Aquests estudis s\u00f3n la base d\u2019un bon diagn\u00f2stic que ens permetr\u00e0 una correcta planificaci\u00f3 del projecte de conservaci\u00f3 i\/o restauraci\u00f3.<\/p>\n<p>Les t\u00e8cniques no destructives s\u00f3n aquelles proves o assaigs que no alteren de manera permanent ni l\u2019estat f\u00edsic ni les propietats qu\u00edmiques o dimensionals dels materials. Es busca, en tot moment, un impacte nul o m\u00ednim sobre l\u2019objecte que s\u2019estudia. Podem incloure les t\u00e8cniques radiogr\u00e0fiques dins d\u2019aquests assaigs.<\/p>\n<p>Els raigs X van ser descoberts, gaireb\u00e9 per casualitat, a finals del segle XIX pel f\u00edsic alemany Wilhelm Conrad R\u00f6ntgen mentre treballava amb un tub de raigs cat\u00f2dics. R\u00e0pidament es van trobar nombrosos usos i aplicacions per a aquesta nova t\u00e8cnica, sobretot en els camps de la medicina i la ind\u00fastria. Els raigs X s\u00f3n radiacions electromagn\u00e8tiques amb una longitud d\u2019ona que va des dels 10 fins als 0,001 nm. Com m\u00e9s petita \u00e9s la longitud d\u2019ona dels raigs X, m\u00e9s grans s\u00f3n la seva energia i el seu poder de penetraci\u00f3. Els raigs amb longituds d\u2019ona m\u00e9s grans, propers a la banda ultraviolada de l\u2019espectre electromagn\u00e8tic, es coneixen com a raigs X tous. En canvi, els de longitud d\u2019ona m\u00e9s petita, m\u00e9s propers a la zona dels raigs gamma, s\u2019anomenen raigs X durs. Els raigs X formats per una barreja de moltes longituds d\u2019ona diferents es coneixen com a raigs X blancs, per diferenciar-los dels raigs X monocrom\u00e0tics, que tenen una \u00fanica longitud d\u2019ona. Tant la llum visible com els raigs X es produeixen a partir de les transicions dels electrons at\u00f2mics d\u2019una \u00f2rbita a una altra. La llum visible correspon a transicions d\u2019electrons externs i els raigs X a transicions d\u2019electrons interns. Per prendre una radiografia, l\u2019objecte a visualitzar es col\u00b7loca entre una font de raigs X i una l\u00e0mina gran de pel\u00b7l\u00edcula fotogr\u00e0fica. L\u2019enfosquiment de la pel\u00b7l\u00edcula \u00e9s proporcional a l\u2019exposici\u00f3 a la radiaci\u00f3. Una esquerda o una bombolla d\u2019aire permeten una major transmissi\u00f3 i es manifesten com una zona fosca.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00bbhttps:\/\/olgapayan.com\/wp-content\/uploads\/2025\/04\/EM_Spectrum_Properties_es.svg_.png\u00bb title_text=\u00bbEM_Spectrum_Properties_es.svg\u00bb align=\u00bbcenter\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb text_font_size=\u00bb14px\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<p style=\"text-align: center;\">Espectre electromagn\u00e8tic<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0&#8243; locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;]<\/p>\n<p>Aquests raigs d\u2019alta energia, capa\u00e7os de travessar diferents materials, s\u00f3n produ\u00efts en una v\u00e0lvula de buit protegida per una carcassa de plom que actua com a protecci\u00f3 o contenci\u00f3 de la radiaci\u00f3 dispersa. Aquesta v\u00e0lvula o tub de raigs X cont\u00e9 dos el\u00e8ctrodes o conductors. El c\u00e0tode \u00e9s un filament, normalment de wolframi, que allibera energia en forma d\u2019electrons quan s\u2019activa una corrent el\u00e8ctrica. Al costat oposat hi ha un \u00e0node de tungst\u00e8 o wolframi, amb una placa fixa o rotat\u00f2ria que rep l\u2019impacte dels electrons alliberats pel c\u00e0tode contra l\u2019el\u00e8ctrode positiu, emetent una reacci\u00f3 de frenada o desacceleraci\u00f3 en forma de fotons. Tamb\u00e9 s\u2019allibera molta energia en forma de calor, per la qual cosa el conjunt ha d\u2019estar refrigerat amb aigua o oli.<\/p>\n<p>Els fotons de raigs X tenen la capacitat de penetrar diversos cent\u00edmetres en alguns materials s\u00f2lids i opacs a la llum. Aquest feix de raigs X \u00e9s absorbit pels materials m\u00e9s densos i\/o amb m\u00e9s gruix. Col\u00b7locant una placa radiogr\u00e0fica sensible es produeixen reaccions qu\u00edmiques i s\u2019origina una imatge.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00bbhttps:\/\/olgapayan.com\/wp-content\/uploads\/2025\/04\/Tubo-1.jpg\u00bb title_text=\u00bbTubo 1&#8243; align=\u00bbcenter\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb text_font_size=\u00bb14px\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<p style=\"text-align: center;\">Tub de raigs X<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0&#8243; locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;]<\/p>\n<p>Una radiografia \u00e9s la imatge registrada en una placa o pel\u00b7l\u00edcula fotogr\u00e0fica en intercalar un objecte entre aquesta placa sensible i la font emissora de radiaci\u00f3 d\u2019alta energia dels raigs X. Les zones m\u00e9s denses o de major gruix apareixen com a zones de color m\u00e9s clar; en canvi, les zones fosques poden ser indicatives de materials de menor densitat o gruix. Aquesta t\u00e8cnica genera una informaci\u00f3 valuosa sobre l&#8217;estructura interna dels b\u00e9ns estudiats.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00bbhttps:\/\/olgapayan.com\/wp-content\/uploads\/2025\/04\/044-133_1.jpg\u00bb title_text=\u00bb044-133_1&#8243; align=\u00bbcenter\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb text_font_size=\u00bb14px\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<p style=\"text-align: center;\">Radiografia de l&#8217;assemblatge d&#8217;una escultura policromada. Imatge de Crist de la Sang de Nicol\u00e1s de Bussy<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0&#8243; locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;]<\/p>\n<p>En comptes d\u2019obtenir una imatge, com en la radiografia convencional, la TC obt\u00e9 una s\u00e8rie d\u2019imatges quan la font de raigs X produeix un feix prim en forma de ventall i els detectors de radiaci\u00f3 giren al voltant de l\u2019objecte alineats amb aquesta font. Totes aquestes imatges acumulades s\u00f3n processades i reconstru\u00efdes produint digitalment una imatge en secci\u00f3, \u00e9s a dir, un tall axial. Aquesta t\u00e8cnica de raigs X ha millorat notablement l\u2019estudi dels b\u00e9ns culturals, sobretot en objectes volum\u00e8trics. Aquestes imatges en secci\u00f3 contenen molta m\u00e9s informaci\u00f3 que una radiografia convencional i ens mostren no nom\u00e9s els elements compositius sin\u00f3 tamb\u00e9 la seva ubicaci\u00f3 exacta.<\/p>\n<p>[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=\u00bb1_2,1_2&#8243; _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb||||false|false\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column_inner type=\u00bb1_2&#8243; saved_specialty_column_type=\u00bb3_4&#8243; _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_image src=\u00bbhttps:\/\/olgapayan.com\/wp-content\/uploads\/2025\/04\/Anverso-final.B.jpg\u00bb title_text=\u00bbAnverso final.B\u00bb align=\u00bbright\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=\u00bb1_2&#8243; saved_specialty_column_type=\u00bb3_4&#8243; _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_image src=\u00bbhttps:\/\/olgapayan.com\/wp-content\/uploads\/2025\/04\/tc2.jpg\u00bb title_text=\u00bbtc2&#8243; _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_padding=\u00bb0px|||||\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column_inner saved_specialty_column_type=\u00bb3_4&#8243; _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb text_font_size=\u00bb14px\u00bb locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<p style=\"text-align: center;\">Tomografia de l\u2019escultura Verge de les Vict\u00f2ries. Projecte TC-ESCULT<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0&#8243; locked=\u00bboff\u00bb global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;]<\/p>\n<p>En l\u2019estudi dels metalls, els raigs X ens evidencien el nivell i les zones de corrosi\u00f3. Tamb\u00e9 poden donar-nos pistes sobre les t\u00e8cniques de fabricaci\u00f3. En els materials cer\u00e0mics constitueix una bona eina per detectar la possible pres\u00e8ncia de minerals pesants o l\u2019\u00fas de metalls en les decoracions policromades. En la pintura sobre llen\u00e7 o taula, la radiografia ens mostra el tipus de tela, les unions en la taula, l\u2019estat de conservaci\u00f3, aix\u00ed com penediments de l\u2019autor, intervencions posteriors i repintats, i la pres\u00e8ncia de plom en els pigments utilitzats. Per obtenir una bona imatge radiogr\u00e0fica de segons quines peces, hem de tenir en compte si s\u00f3n objectes que poden oferir poc contrast.<\/p>\n<p>En el cas dels materials biol\u00f2gics \u00e9s de summa import\u00e0ncia la informaci\u00f3 forense, l\u2019estat de conservaci\u00f3 dels ossos\u2026 En l\u2019escultura de fusta policromada podem observar les parts constitutives, els repintats, les unions, elements de refor\u00e7, metalls a l\u2019interior, afegits, la veta i els anells de creixement de la fusta, esquerdes, orificis, buidats, galeries i orificis produ\u00efts per insectes xil\u00f2fags\u2026<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>A. Mesanza Moraza, \u201cT\u00e8cniques no destructives aplicades al patrimoni constru\u00eft\u201d m\u00e0ster en geotecnologies cartogr\u00e0fiques en enginyeria i arquitectura. Escola Polit\u00e8cnica Superior d\u2019\u00c0vila. Universitat de Salamanca, 2011<\/li>\n<li>P. G\u00f3mez-Esteban, \u201cEn qu\u00e8 consisteix una tomografia axial computada (TAC)?\u201d El Tamiz<\/li>\n<li>G. Rodr\u00edguez Tlachi, \u201cL\u2019aplicaci\u00f3 de la radiologia en l\u2019estudi del patrimoni cultural\u201d. Butllet\u00ed semestral, n\u00fam. 2 ACERVOS CNCPC \u2013 INAH, 2014<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][et_pb_column type=\u00bb1_4&#8243; _builder_version=\u00bb4.16&#8243; custom_padding=\u00bb|||\u00bb global_colors_info=\u00bb{}\u00bb custom_padding__hover=\u00bb|||\u00bb][et_pb_text _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb header_3_font_size=\u00bb30px\u00bb custom_margin=\u00bb||||false|false\u00bb global_colors_info=\u00bb{}\u00bb]<\/p>\n<h3>M\u00e9s not\u00edcies<\/h3>\n<p>[\/et_pb_text][et_pb_blog posts_number=\u00bb4&#8243; include_categories=\u00bball\u00bb use_manual_excerpt=\u00bboff\u00bb show_author=\u00bboff\u00bb show_categories=\u00bboff\u00bb show_excerpt=\u00bboff\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb header_font_size=\u00bb25px\u00bb meta_font=\u00bb&#8211;et_global_heading_font||||||||\u00bb meta_font_size=\u00bb15px\u00bb border_radii_fullwidth=\u00bbon|10px|10px|10px|10px\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_blog][\/et_pb_column][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LES T\u00c8CNIQUES RADIOGR\u00c0FIQUES APLICADES A L\u2019ESTUDI I DIAGNOSI DE L\u2019ESTAT DE CONSERVACI\u00d3 DELS B\u00c9NS CULTURALSDe Wilhelm R\u00f6ntgen. &#8211; [1], Domini p\u00fablic, https:\/\/commons.wikimedia.org\/w\/index.php?curid=5059748Per a l\u2019estudi dels materials constitutius dels nostres b\u00e9ns culturals, tamb\u00e9 \u00e9s molt interessant l\u2019\u00fas de t\u00e8cniques d\u2019imatge de car\u00e0cter no destructiu que no produeixen cap mena de deteriorament. Amb les t\u00e8cniques radiogr\u00e0fiques disposem [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":720,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"2880","footnotes":""},"categories":[1],"tags":[],"class_list":["post-719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les T\u00e8cniques Radiogr\u00e0fiques Aplicades A L&#039;Estudi I Diagn\u00f2stic De L&#039;Estat De Conservaci\u00f3 Dels B\u00e9ns Culturals - Olga Payan<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/olgapayan.com\/es\/les-tecniques-radiografiques-aplicades-a-lestudi-i-diagnostic-de-lestat-de-conservacio-dels-bens-culturals\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les T\u00e8cniques Radiogr\u00e0fiques Aplicades A L&#039;Estudi I Diagn\u00f2stic De L&#039;Estat De Conservaci\u00f3 Dels B\u00e9ns Culturals - Olga Payan\" \/>\n<meta property=\"og:description\" content=\"LES T\u00c8CNIQUES RADIOGR\u00c0FIQUES APLICADES A L\u2019ESTUDI I DIAGNOSI DE L\u2019ESTAT DE CONSERVACI\u00d3 DELS B\u00c9NS CULTURALSDe Wilhelm R\u00f6ntgen. - [1], Domini p\u00fablic, https:\/\/commons.wikimedia.org\/w\/index.php?curid=5059748Per a l\u2019estudi dels materials constitutius dels nostres b\u00e9ns culturals, tamb\u00e9 \u00e9s molt interessant l\u2019\u00fas de t\u00e8cniques d\u2019imatge de car\u00e0cter no destructiu que no produeixen cap mena de deteriorament. 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