{"id":33547,"date":"2024-11-05T20:00:13","date_gmt":"2024-11-05T19:00:13","guid":{"rendered":"https:\/\/www.hilase.cz\/?p=33547"},"modified":"2024-10-31T15:46:26","modified_gmt":"2024-10-31T14:46:26","slug":"miniature-spur-gears-lsp","status":"publish","type":"post","link":"https:\/\/www.hilase.cz\/en\/miniature-spur-gears-lsp\/","title":{"rendered":"Influence on micro-geometry and surface characteristics of laser powder bed fusion built 17-4 PH miniature spur gears in laser shock peening"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[176],"class_list":["post-33547","post","type-post","status-publish","format-standard","hentry","category-paper"],"acf":{"obrazek":{"ID":33545,"id":33545,"title":"Thumbnails (41)","filename":"Thumbnails-41.png","filesize":70522,"url":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","link":"https:\/\/www.hilase.cz\/iminiature-spur-gears-lsp\/thumbnails-41\/","alt":"","author":"15","description":"","caption":"","name":"thumbnails-41","status":"inherit","uploaded_to":33542,"date":"2024-10-31 12:46:37","modified":"2024-10-31 12:46:37","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.hilase.cz\/wp-includes\/images\/media\/default.png","width":314,"height":166,"sizes":{"thumbnail":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41-175x166.png","thumbnail-width":175,"thumbnail-height":166,"medium":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","medium-width":314,"medium-height":166,"medium_large":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","medium_large-width":314,"medium_large-height":166,"large":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","large-width":314,"large-height":166,"1536x1536":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","1536x1536-width":314,"1536x1536-height":166,"2048x2048":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","2048x2048-width":314,"2048x2048-height":166,"image":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","image-width":314,"image-height":166,"gallery":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41-273x166.png","gallery-width":273,"gallery-height":166,"card":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","card-width":314,"card-height":166,"square":"https:\/\/www.hilase.cz\/wp-content\/uploads\/Thumbnails-41.png","square-width":314,"square-height":166}},"obsah":[{"acf_fc_layout":"text","text":"<p>Read a new article in the <em><a href=\"https:\/\/www.sciencedirect.com\/journal\/advances-in-industrial-and-manufacturing-engineering\">Advances in Industrial and Manufacturing Engineering<\/a><\/em> journal co-authored by HiLASIANS from the <strong><a href=\"https:\/\/www.hilase.cz\/en\/vyzkumne-programy\/industrial-laser-applications\/\">Industrial Laser Applications<\/a><\/strong> department. The study investigated the effect of underwater <a href=\"https:\/\/www.hilase.cz\/en\/produkty\/laser-shock-peening-lsp\/\">Laser Shock Peening<\/a> on the quality of laser powder bed fusion built 17-4\u00a0PH small-size spur gears.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.hilase.cz\/wp-content\/uploads\/Influence-on-micro-geometry-and-surface-characteristics-of-laser-powder-bed-fusion-built-17-4-PH-miniature-spur-gears-in-laser-shock-peening.png\" \/><\/p>\n<p>Kudos to the study\u2019s authors!<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/sunil-pathak-34a53814\/\">Sunil Pathak<\/a><\/strong> | HiLASE Centre &#8211; LSP Scientist<\/li>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/ondrejstransky\/\">Ond\u0159ej Str\u00e1nsk\u00fd<\/a><\/strong> | HiLASE Centre \u2013 Ph.D. student, LSP<\/li>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/jan-smaus\/\">Jan \u0160maus<\/a><\/strong> | HiLASE Centre \u2013 LSP technologist<\/li>\n<li>Jarom\u00edr Kope\u010dek | Institute of Physics of the Czech Academy of Sciences<\/li>\n<li>Jinoop Arackal\u00a0Narayanan | Teesside University<\/li>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/jan-kaufman-69869089\/\">Jan Kaufman<\/a><\/strong> | HiLASE Centre \u2013 team leader of LSP<\/li>\n<li>Libor Ber\u00e1nek | Czech Technical University in Prague<\/li>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/marek-b%C3%B6hm-0b5a30127\/\">Marek B\u00f6hm<\/a><\/strong> | HiLASE Centre \u2013 Graduate student: Technical support<\/li>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/janbrajer\/\">Jan Brajer<\/a><\/strong> | HiLASE Centre \u2013 Head of Industrial Laser Applications<\/li>\n<li><strong><a href=\"https:\/\/www.linkedin.com\/in\/tomas-mocek-1ab6951a1\/\">Tom\u00e1\u0161 Mocek<\/a><\/strong> | HiLASE Centre \u2013 Head of the Centre<\/li>\n<\/ul>\n<p>Micro-geometrical errors, surface roughness, and surface integrity (microstructure, residual stresses, microhardness) play an important role in defining the quality of the gears as they directly affect their noise, vibration characteristics and service life during their use. In the present work, underwater laser shock peening (LSP) is employed to improve the quality of the laser powder bed fusion built 17-4 PH small-size spur gears (12 mm outside diameter). LSP was employed near the spur gear root, and effects were measured in terms of residual stresses, variation in microgeometry errors, surface roughness, porosity, microstructure, and microhardness. It was observed that LSP could impart compressive residual stresses up to 0.4 mm of measured depth, while the surface roughness has improved by 32%. Microgeometry and microhardness of gears showed minor variations. Additionally, LSP has shown an impact on the microstructure as the grain orientation was altered and grain size reduced by 15.6% due to shock wave transmission. The study paves the way to use LSP as a post-processing technique to modify the surface characteristics of LPBF-built miniature spur gears with minimal impact on the gear microgeometry.<\/p>\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2666912924000163\">Read the full article.<\/a><\/p>\n","oddelovace":"none"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Influence on micro-geometry and surface characteristics of laser powder bed fusion built 17-4 PH miniature spur gears in laser shock peening - HiLASE<\/title>\n<meta name=\"description\" content=\"Read a new article in the Advances in Industrial and Manufacturing Engineering journal co-authored by HiLASIANS from the Industrial Laser Applications department.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hilase.cz\/en\/miniature-spur-gears-lsp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Influence on micro-geometry and surface characteristics of laser powder bed fusion built 17-4 PH miniature spur gears in laser shock peening\" \/>\n<meta property=\"og:description\" content=\"Read a new article in the Advances in Industrial and Manufacturing Engineering journal co-authored by HiLASIANS from the Industrial Laser Applications department.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hilase.cz\/en\/miniature-spur-gears-lsp\/\" \/>\n<meta property=\"og:site_name\" content=\"HiLASE\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-05T19:00:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-31T14:46:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.hilase.cz\/wp-content\/uploads\/Influence-on-micro-geometry-and-surface-characteristics-of-laser-powder-bed-fusion-built-17-4-PH-miniature-spur-gears-in-laser-shock-peening.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Lucka \u0160t\u011bp\u00e1nkov\u00e1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Lucka \u0160t\u011bp\u00e1nkov\u00e1\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.hilase.cz\/en\/miniature-spur-gears-lsp\/\",\"url\":\"https:\/\/www.hilase.cz\/en\/miniature-spur-gears-lsp\/\",\"name\":\"Influence on micro-geometry and surface characteristics of laser powder bed fusion built 17-4 PH miniature spur gears in laser shock peening - 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