{"id":9472,"date":"2025-06-16T15:54:38","date_gmt":"2025-06-16T13:54:38","guid":{"rendered":"https:\/\/www.sharebot.it\/?p=9472"},"modified":"2025-06-16T15:54:38","modified_gmt":"2025-06-16T13:54:38","slug":"snowwhite2-paper-monotonic-and-cyclic-compressive-performance-of-self-monitoring-materials","status":"publish","type":"post","link":"https:\/\/www.sharebot.it\/en\/snowwhite2-paper-monotonic-and-cyclic-compressive-performance-of-self-monitoring-materials\/","title":{"rendered":"Snowwhite2 paper: Monotonic and cyclic compressive performance of self-monitoring materials"},"content":{"rendered":"<p>Our exploration of scientific advancements made possible by the <a href=\"https:\/\/www.sharebot.it\/en\/printers\/snowwhite-2\/\"><strong>Sharebot Snowwhite2 SLS 3D printer<\/strong><\/a> takes us to a fascinating study: &#8220;<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2666682025000106\">Monotonic and cyclic compressive performance of self-monitoring MWCNT\/PA12 cellular composites manufactured by selective laser sintering<\/a>&#8220;. In this piece, we&#8217;ll break down the core problem this research aimed to solve and the key discoveries they made. For those who want to dive deeper, we&#8217;ll also provide the original abstract and all referenced sources.<\/p>\n<h2 class=\"western\">Understanding the study and its main result<\/h2>\n<p>This study looked at the mechanical and electrical properties of special 3D-printed structures when squished. These structures were shaped like honeycombs and made using our <a href=\"https:\/\/www.sharebot.it\/en\/printers\/snowwhite-2\/\"><strong>Sharebot Snowwhite2 3D printer<\/strong><\/a>. They used two different materials: pure PA12 (a type of plastic) and a mix of PA12 with carbon nanotubes (MWCNTs).<\/p>\n<p>Here&#8217;s what they found:<\/p>\n<ul>\n<li><strong>Pure PA12<\/strong> structures were stronger and could absorb more energy, especially the denser ones (30% and 40% solid material).<\/li>\n<li>The <strong>MWCNT\/PA12<\/strong> structures were not as strong or stiff as the pure PA12 ones, but they were very good at absorbing energy (up to 53% efficiency).<\/li>\n<li>Most interestingly, the <strong>MWCNT\/PA12<\/strong> structures could sense strain, meaning their electrical resistance changed when they were deformed. They were very good at this, acting <strong>like built-in sensors<\/strong>.<\/li>\n<li>When these MWCNT\/PA12 structures were repeatedly squished, their electrical resistance significantly increased as they got damaged. This means they could potentially <strong>detect damage as it happens<\/strong>.<\/li>\n<\/ul>\n<h3><span style=\"font-size: 20px; font-weight: 600;\">Main result<\/span><\/h3>\n<p>The main discovery is that 3D-printed honeycomb structures made from a blend of <strong>PA12 and carbon nanotubes (MWCNTs) can act as self-sensing materials<\/strong>. They are not only good at absorbing energy but also have the remarkable ability to detect strain and damage as it occurs. This opens up possibilities for creating <strong>smart, lightweight structures that can sense their own condition<\/strong>, which could be useful in many applications like aerospace or automotive industries for real-time monitoring.<\/p>\n<h2 class=\"western\">Monotonic and cyclic compressive performance of self-monitoring MWCNT\/PA12 cellular composites manufactured by selective laser sintering<\/h2>\n<p>Muhammad Umar Azam (a), S Kumar (b), Andreas Schiffer (a) (c)<br \/>\na) Department of Mechanical and Nuclear Engineering, Khalifa University of Science and Technology, Abu Dhabi, 127788, United Arab Emirates<br \/>\nb) James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK<br \/>\nc) Advanced Research and Innovation Center (ARIC), Khalifa University of Science and Technology, 127788, Abu Dhabi, United Arab Emirates<\/p>\n<p>Ref.: <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2666682025000106\">https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2666682025000106<\/a><\/p>\n<h3 class=\"western\">Abstract<\/h3>\n<p>Herein, we experimentally investigate the mechanical and piezoresistive properties of selectively laser-sintered cellular composites under monotonic and cyclic compressive loading. Hexagonal honeycomb structures (HHSs) with relative densities of 20 %, 30 %, and 40 % were 3D printed from a ball-milled nanocomposite powder of multi-walled carbon nanotubes (MWCNTs) and polyamide 12 (PA12) with 0.3 wt.% MWCNTs. The pure PA12 HHSs exhibited lower porosity and superior mechanical properties, including collapse strength, elastic modulus and energy absorption, particularly at higher relative densities (30 % and 40 %). Notably, the specific energy absorption for the PA12 HHSs reached 24 J g\u207b\u00b9, under out-of-plane compression at 40 % relative density. Compared to neat PA12, the MWCNT\/PA12 HHSs showed a reduction in strength and modulus but demonstrated excellent energy absorption efficiency of up to 53 %. Moreover, MWCNT\/PA12 HHSs exhibited exceptional strain-sensing capabilities in the elastic region with gauge factors of up to 25. Cyclic tests showed that the zero-load resistance increased significantly as damage progressed during the collapse phase, highlighting their potential for application in smart, lightweight structures with integrated strain and damage-sensing functionalities.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our exploration of scientific advancements made possible by the Sharebot Snowwhite2 SLS 3D printer takes us to a fascinating study: &#8220;Monotonic and cyclic compressive performance of self-monitoring MWCNT\/PA12 cellular composites manufactured by selective laser sintering&#8220;. In this piece, we&#8217;ll break down the core problem this research aimed to solve and the key discoveries they made. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[42,38],"class_list":["post-9472","post","type-post","status-publish","format-standard","hentry","category-snowwhite-2","tag-paper","tag-sls-2"],"_links":{"self":[{"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/posts\/9472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/comments?post=9472"}],"version-history":[{"count":1,"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/posts\/9472\/revisions"}],"predecessor-version":[{"id":9473,"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/posts\/9472\/revisions\/9473"}],"wp:attachment":[{"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/media?parent=9472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/categories?post=9472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sharebot.it\/en\/wp-json\/wp\/v2\/tags?post=9472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}