2026-04-30T07:02:54Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/60572024-03-04T17:22:09Zcom_20.500.11984_473col_20.500.11984_478

00925njm 22002777a 4500 dc Rodríguez Bogajo, Iñigo author Soriano Moreno, Denis author Ortiz-de-Zarate, Gorka author CUESTA ZABALAJAUREGUI, MIKEL author ARRAZOLA, PEDRO JOSE author 2022 Lightweight materials like Carbon Fiber Reinforced Polymers (CFRPs) present certain challenges, mainly regarding the resultant surface integrity of the holes. Different techniques such as optimized tool geometries, machining techniques and cooling/lubricating techniques have been tested for improving surface integrity on CFRPs. Unfortunately using coolants presents certain challenges when machining CFRPs, as the moisture absorption can degrade the mechanical properties of the composite, on top of the environmental and health hazards created by water and oil based metalworking fluids. Therefore, this study aims to evaluate the influence of environmentally friendly liquid carbon dioxide (LCO2) based cooling/lubricating conditions and Polycrystalline Diamond (PCD) drill bit geometries (point angle) on the delamination when drilling CFRP composites. The results showed significant influence of the tool geometry and cooling condition on the surface integrity of CFRPs, especially in the case of the former. 2212-8271 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=169103 https://hdl.handle.net/20.500.11984/6057 LCO2 cooling Drilling composite Sustainable machining Surface integrity Effect of Tool Geometry and LCO2 Cooling on Cutting Forces and Delamination when Drilling CFRP Composites Using PCD Tools