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Biomedical Engineering and Bioengineering Commons

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Mechanical Engineering

All Graduate Theses, Dissertations, and Other Capstone Projects

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Full-Text Articles in Biomedical Engineering and Bioengineering

Studying And Troubleshooting Lubricity Test On Pressure Wire X Proximal And Distal Coatings, Usama A. Khan Jan 2023

Studying And Troubleshooting Lubricity Test On Pressure Wire X Proximal And Distal Coatings, Usama A. Khan

All Graduate Theses, Dissertations, and Other Capstone Projects

Coatings of guidewires used in medical device manufacturing industry are one of the most important element aspects. It defines its efficiency to penetrate through tightest of canals and curves. Guidewires are put through controlled environment to accelerate its age and tested for its mechanical features. Pressure Wire X failed the lubricity testing after being tested by multiple operators and at alternate sites. A cause-and-effect diagram shows all potential causes of test failure. The human factor involved in the test failure was investigated through multiple Gage R&R and training records. Calibration error with the lubricity tester DL1000 was identified and solved …


Binder Saturation, Layer Thickness, Drying Time And Their Effects On Dimensional Tolerance And Density Of Cobalt Chrome - Tricalcium Phosphate Biocomposite, John Ruprecht Jan 2020

Binder Saturation, Layer Thickness, Drying Time And Their Effects On Dimensional Tolerance And Density Of Cobalt Chrome - Tricalcium Phosphate Biocomposite, John Ruprecht

All Graduate Theses, Dissertations, and Other Capstone Projects

Traditional metals such as stainless steel, titanium and cobalt chrome are used in biomedical applications (implants, scaffolds, etc.) but suffer from issues such as osseointegration and compatibility with existing bone. One way to improve traditional biomaterials is to incorporate ceramics with these metals so that their mechanical properties can be similar to cortical bones. Tricalcium phosphate is such a ceramic with properties such that it can be used in the human body. This research explores the use of the Binder Jetting based additive manufacturing process to create a novel biocomposite made of cobalt chrome and tricalcium phosphate. Experiments were conducted …