Laser-Assisted Positioning for Vertical Pull-Off Tests

Inhalt:
With 3D printing, the rapid production of prototypes and manufacturing of complex geometries is possible with almost no restrictions and is used, for example, in dentistry. With the suitable coatings, such as Parylene-C, the use of these technology can be integrated further into the medical field. However, the adhesion of the coating plays a critical role and must be determined. This paper presents a laser-assisted positioning setup for the determination of coating adhesion specifically for 3D technology, which allows a fast and accurate vertical tensile pull-off test with an angle of exactly 90 deg. The substrates were fabricated from a "Tough" resin and coated with Parylene-C. Prior to coating, the 3D printed sub-strates were pretreated using different methods to investigate the effects of coating adhesion. With the help of the setup, the pretreatment methods could be evaluated in terms of coating adhesion.