{"id":4721,"date":"2026-05-08T09:47:54","date_gmt":"2026-05-08T07:47:54","guid":{"rendered":"https:\/\/imast.biz\/?post_type=pubblicazione&#038;p=4721"},"modified":"2026-05-08T09:47:54","modified_gmt":"2026-05-08T07:47:54","slug":"strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain","status":"publish","type":"pubblicazione","link":"https:\/\/imast.biz\/en\/pubblicazione\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\/","title":{"rendered":"Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain"},"content":{"rendered":"<div class=\"body\">\n<div class=\"row-fluid main-body\">\n<div class=\"span12\">\n<div class=\"item-page\">\n<div>\n<p>The resistive behavior of multi-walled carbon nanotube (MWCNT)\/epoxy resins, tested under mechanical cycles and different levels of applied strain, was investigated for specimens loaded in axial tension. The surface normalized resistivity is linear with the strain for volume fraction of MWCNTs between 2.96\u00d710-4 and 2.97\u00d710-3 (0.05 and 0.5% wt\/wt). For values lower than 0.05% wt\/wt, close to the electrical percolation threshold (EPT) a non-linear behavior was observed. The strain sensitivity, in the range between 0.67 and 4.45, may be specifically modified by controlling the nanotube loading, in fact the sensor sensitivity decreases with increasing the carbon nanotubes amount. Microscale damages resulted directly related to the resistance changes and hence easily detectable in a non-destructive way by means of electrical measurements. In the fatigue tests, the damage is expressed through the presence of a residual resistivity, which increases with the amount of plastic strain accumulated in the matrix.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"template":"","meta":{"_acf_changed":false},"class_list":["post-4721","pubblicazione","type-pubblicazione","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain | IMAST<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain | IMAST\" \/>\n<meta property=\"og:description\" content=\"The resistive behavior of multi-walled carbon nanotube (MWCNT)\/epoxy resins, tested under mechanical cycles and different levels of applied strain, was investigated for specimens loaded in axial tension. The surface normalized resistivity is linear with the strain for volume fraction of MWCNTs between 2.96\u00d710-4 and 2.97\u00d710-3 (0.05 and 0.5% wt\/wt). For values lower than 0.05% wt\/wt, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/imast.biz\/en\/pubblicazione\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\/\" \/>\n<meta property=\"og:site_name\" content=\"IMAST\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/pubblicazione\\\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\\\/\",\"url\":\"https:\\\/\\\/imast.biz\\\/en\\\/pubblicazione\\\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\\\/\",\"name\":\"Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain | IMAST\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/#website\"},\"datePublished\":\"2026-05-08T07:47:54+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/pubblicazione\\\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/imast.biz\\\/en\\\/pubblicazione\\\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/pubblicazione\\\/strain-and-damage-monitoring-in-carbon-nanotube-based-composite-under-cyclic-strain\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/imast.biz\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/imast.biz\\\/en\\\/\",\"name\":\"IMAST\",\"description\":\"Distretto tecnologico per l&#039;ingegneria dei materiali polimerici e compositi e strutture\",\"publisher\":{\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/imast.biz\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/#organization\",\"name\":\"IMAST\",\"url\":\"https:\\\/\\\/imast.biz\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/imast.biz\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/logo-imast.png\",\"contentUrl\":\"https:\\\/\\\/imast.biz\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/logo-imast.png\",\"width\":600,\"height\":257,\"caption\":\"IMAST\"},\"image\":{\"@id\":\"https:\\\/\\\/imast.biz\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain | IMAST","robots":{"index":"noindex","follow":"follow"},"og_locale":"en_US","og_type":"article","og_title":"Strain and damage monitoring in carbon-nanotube-based composite under cyclic strain | IMAST","og_description":"The resistive behavior of multi-walled carbon nanotube (MWCNT)\/epoxy resins, tested under mechanical cycles and different levels of applied strain, was investigated for specimens loaded in axial tension. 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