Development of Characterization Controls for 3D-Printed Implants by Direct Energy Deposition

目前，生物医学植入物的最大市场份额包括使用传统铸造工艺由钛、**和钴铬合金等金属材料制成的设备。虽然这些金属生物材料的植入在牙科、口腔颌面和关节置换手术中已经很常见，但仍有10-15%的矫形手术和2%的牙科植入物在使用中失败。缺乏具有适当机械、材料和生物特性的患者专用设备是导致这种失败的原因之一。现在的仪器能够打印金属、增材制造或3d打印，**是一项有前途的技术，用于制造定制的医疗植入设备，可以优化以获得更好的成功。然而，在增材制造过程中，仍存在一些与材料优化相关的挑战，以满足医疗植入物严格的材料和机械性能法规。全面而强大的高分辨率材料表征和对局部机械性能的理解将有助于推进增材制造生产的生物医学植入物。Liburdi工程公司有兴趣开发用于生物医学植入物增材制造的制造仪器，因为他们目前的直接能量沉积技术与传统的粉末床增材制造相比有几个优势。通过与麦克马斯特大学合作，该项目将通过了解和优化安大略省生产的材料，在开发3d打印技术方面取得重大进展

Currently, the largest market share of biomedical implants consists of devices fabricated from metallic materials such as titanium,**and cobalt-chromium alloys using conventional casting processes. While the implantation of these metallic biomaterials has**become common place in dentistry, oral maxillofacial, and joint replacement surgeries, between 10-15% of orthopaedic and 2% of**dental implants still fail in service. The lack of patient specific devices with both appropriate mechanical, materials and biological**properties is one of the causes for this failure. With instruments now capable of printing metals, additive manufacturing, or 3Dprinting,**is a promising technology for manufacturing customized medical implant devices that can be optimized for better success.**However, there remains several challenges related to the materials optimization during additive manufacturing to meet the**stringent materials and mechanical properties for medical implant regulations. A thorough and robust high-resolution materials**characterization and understanding of local mechanical properties will help to advance biomedical implants produced by additive**manufacturing. Liburdi Engineering is interested in developing their manufacturing instrumentation for applications in additive**manufacturing of biomedical implants, since their current direct energy deposition technology has several advantages to**conventional powder-bed additive manufacturing. By partnering with McMaster University, this project will provide significant**advancements in developing the 3D-printing technology by understanding and optimizing the materials produced.**.**Ontario