{"id":2556,"date":"2012-03-27T20:50:11","date_gmt":"2012-03-27T19:50:11","guid":{"rendered":"https:\/\/www.oewf.org\/?p=2556"},"modified":"2012-03-27T20:51:03","modified_gmt":"2012-03-27T19:51:03","slug":"from-body-scan-to-should-pads","status":"publish","type":"post","link":"https:\/\/oewf.org\/en\/2012\/03\/from-body-scan-to-should-pads\/","title":{"rendered":"From body scan to should pads"},"content":{"rendered":"

Before Dachtein Mars simulation, Humans factors are being taken in account in the Aouda.X suit design, especially in the shoulder region: exploring 3D body scans to develop new generation shoulder pads to bear Hard-Upper-Torso (HUT) and Portable Life Support System (PLSS) weight.<\/strong><\/p>\n

As current pads are not especially designed for the suit use and suit tester’s morphology (they are made to have extra heavy layers under), a preliminary work has been conducted to design a proper mould for the hard shoulder pad layer.<\/p>\n

\"Original

Original left shoulder (lef) & self intersecting faces in red (front view) (right) (c) OEWF (Marc Rodriguez)<\/p><\/div>\n

\"final<\/a>

Final shoulder pad simulation over the shoulder: hard layer (blue), foam (red) and original shoulder (green) (c) OEWF (Marc Rodriguez)<\/p><\/div>\nThe full shoulder pads (SP) project is also dealing with mechanical external solicitations (HUT parts in direct contact with the external layer) while the part discussed there is only oriented on human factors, in other words: how can we optimize the weight spread over the shoulder?
\nA part of the answer resides in the shape of the shoulder pads dictated by its hard layer (fiber glass fabric layer) itself coming from the actual shoulder shape of a suit tester. After looking at NASA STD-3000 standards to check astronauts measurements in the shoulder area, a 3D body scan (Polygon Mesh) has been selected from a bank to have approximately theses measurements. Then the shoulder part has been extracted.<\/p>\n

The shoulder is a joint between the arm and the torso so body scanners have difficulties to render this area properly, it was necessary to clean the virtual shoulder in order to get a smooth shape. Self intersecting faces are the expression of these errors in joint areas. Appropriate software to deal with polygon meshes is \u201cMeshlab\u201d, its function \u201cremove self intersecting faces\u201d was used to perform this job.<\/p>\n

\"3D<\/a>

3D printing of the mould<\/p><\/div>Furthermore, to print a mould with a 3D printer, ones need a watertight shape, and because faces have been withdrawn, a reconstruction function has been used in Meshlab, there: \u201cSurface Reconstruction : Poisson\u201d, the output of the function is a watertight object assuring the surface\u2019s continuity. The Mesh can now be exported to \u201cAutocad\u201d format (there, \u201c.dxf\u201d), it will then be sliced to fit in the 3D printer dimensions. The virtual mould is then exported to \u201c.stl\u201d to build it in reality.<\/p>\n

The blue layer is the final fiber glass fabric layer, it is obtained after laying down the fabric over the mould, building a rigid structure able to resist the weight of the HUT and PLSS and providing comfort to suit testers by being more adapted to their morphology.<\/p>\n","protected":false},"excerpt":{"rendered":"

Marc Rodriguez OEWF intern & textile engineer Student reports about his first two week at the PolAres spacesuit laboratory.<\/p>\n","protected":false},"author":2,"featured_media":2559,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,45,3,41],"tags":[13],"class_list":["post-2556","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-polares-suit","category-oewf-internships","category-oewf-news","category-research-projects","tag-aouda-en"],"yoast_head":"\nFrom body scan to should pads - Austrian Space Forum (OeWF)<\/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:\/\/oewf.org\/en\/2012\/03\/from-body-scan-to-should-pads\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"From body scan to should pads - Austrian Space Forum (OeWF)\" \/>\n<meta property=\"og:description\" content=\"Marc Rodriguez OEWF intern & textile engineer Student reports about his first two week at the PolAres spacesuit laboratory.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oewf.org\/en\/2012\/03\/from-body-scan-to-should-pads\/\" \/>\n<meta property=\"og:site_name\" content=\"Austrian Space Forum (OeWF)\" \/>\n<meta property=\"article:published_time\" content=\"2012-03-27T19:50:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2012-03-27T19:51:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/oewf.org\/wp-content\/uploads\/2012\/03\/shoulder-pad-simulation.png\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"502\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"OeWF\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@oewf\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"OeWF\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/oewf.org\\\/en\\\/2012\\\/03\\\/from-body-scan-to-should-pads\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/oewf.org\\\/en\\\/2012\\\/03\\\/from-body-scan-to-should-pads\\\/\"},\"author\":{\"name\":\"OeWF\",\"@id\":\"https:\\\/\\\/oewf.org\\\/#\\\/schema\\\/person\\\/d33b1cc5e9a431b7ad8c32cefeaa4aa7\"},\"headline\":\"From body scan to should pads\",\"datePublished\":\"2012-03-27T19:50:11+00:00\",\"dateModified\":\"2012-03-27T19:51:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/oewf.org\\\/en\\\/2012\\\/03\\\/from-body-scan-to-should-pads\\\/\"},\"wordCount\":472,\"image\":{\"@id\":\"https:\\\/\\\/oewf.org\\\/en\\\/2012\\\/03\\\/from-body-scan-to-should-pads\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/oewf.org\\\/wp-content\\\/uploads\\\/2012\\\/03\\\/shoulder-pad-simulation.png\",\"keywords\":[\"aouda\"],\"articleSection\":[\"Aouda Spacesuit Simulator\",\"Internships at the OeWF\",\"OeWF News\",\"Research\\\/Projects\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/oewf.org\\\/en\\\/2012\\\/03\\\/from-body-scan-to-should-pads\\\/\",\"url\":\"https:\\\/\\\/oewf.org\\\/en\\\/2012\\\/03\\\/from-body-scan-to-should-pads\\\/\",\"name\":\"From body scan to should pads - 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