{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T09:20:29Z","timestamp":1777800029253,"version":"3.51.4"},"reference-count":34,"publisher":"SAGE Publications","issue":"14","license":[{"start":{"date-parts":[[2011,10,21]],"date-time":"2011-10-21T00:00:00Z","timestamp":1319155200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Composite Materials"],"published-print":{"date-parts":[[2012,7]]},"abstract":"<jats:p>The characteristics of carbon fiber-reinforced plastics allow a very broad range of uses. Drilling is often necessary to assemble different components, but this can lead to various forms of damage, such as delamination which is the most severe. However, a reduced thrust force can decrease the risk of delamination. In this work, two variables of the drilling process were compared: tool material and geometry, as well as the effect of feed rate and cutting speed. The parameters that were analyzed include: thrust force, delamination extension and mechanical strength through open-hole tensile test, bearing test, and flexural test on drilled plates. The present work shows that a proper combination of all the factors involved in drilling operations, like tool material, tool geometry and cutting parameters, such as feed rate or cutting speed, can lead to the reduction of delamination damage and, consequently, to the enhancement of the mechanical properties of laminated parts in complex structures, evaluated by open-hole, bearing, or flexural tests.<\/jats:p>","DOI":"10.1177\/0021998311421690","type":"journal-article","created":{"date-parts":[[2011,10,21]],"date-time":"2011-10-21T23:03:20Z","timestamp":1319238200000},"page":"1649-1659","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":38,"title":["Comparative analysis of drills for composite laminates"],"prefix":"10.1177","volume":"46","author":[{"given":"Lu\u00eds Miguel P","family":"Dur\u00e3o","sequence":"first","affiliation":[{"name":"Instituto Superior de Engenharia do Porto (ISEP) \/ Centro de Investiga\u00e7\u00e3o e Desenvolvimento em Engenharia Mec\u00e2nica (CIDEM) \u2013 R. Dr. Ant\u00f3nio Bernardino de Almeida, 431-4200-072 Porto, Portugal"}]},{"given":"Daniel JS","family":"Gon\u00e7alves","sequence":"additional","affiliation":[{"name":"Faculdade de Engenharia da Universidade do Porto (FEUP) \/ Instituto de Engenharia Mec\u00e2nica e Gest\u00e3o Industrial (INEGI) \u2013 R. Dr. Roberto Frias, 400-4200-465 Porto, Portugal"}]},{"given":"Jo\u00e3o Manuel RS","family":"Tavares","sequence":"additional","affiliation":[{"name":"Faculdade de Engenharia da Universidade do Porto (FEUP) \/ Instituto de Engenharia Mec\u00e2nica e Gest\u00e3o Industrial (INEGI) \u2013 R. Dr. Roberto Frias, 400-4200-465 Porto, Portugal"}]},{"given":"Victor Hugo C","family":"de Albuquerque","sequence":"additional","affiliation":[{"name":"Faculdade de Engenharia da Universidade do Porto (FEUP) \/ Instituto de Engenharia Mec\u00e2nica e Gest\u00e3o Industrial (INEGI) \u2013 R. Dr. Roberto Frias, 400-4200-465 Porto, Portugal"},{"name":"Universidade de Fortaleza (UNIFOR), Centro de Ci\u00eancias Tecnol\u00f3gicas (CCT), N\u00facleo de Pesquisas Tecnol\u00f3gicas (NPT), Brazil"}]},{"given":"A Torres","family":"Marques","sequence":"additional","affiliation":[{"name":"Faculdade de Engenharia da Universidade do Porto (FEUP) \/ Instituto de Engenharia Mec\u00e2nica e Gest\u00e3o Industrial (INEGI) \u2013 R. 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