1. LASER AUGMENTED DIAMOND DRILLING WESTERN MICHIGAN UNIVERSITY

2. John Patten John Mueller Hossein Mohammadi Eric Carlo Derek Hines Barkin Bakir *This team could be improved by strategic partners LADD TEAM TECHNICAL TEAM COMMERCIALIZATION TEAM Joseph McCarty Previous team members: Alexa DeVos, Macey Putnam, …. Previous team members: Isaac Trumper (University of Rochester), Akshay Darekar, Eeshan Bhagwat, ….

4. LASER AUGMENTED DIAMOND DRILLING (LADD): -Concept -Advantages -Applications -Current Prototype -Road Map

5. 4 Laser Augmented Diamond Drilling (LADD) technique is a recent development for drilling of hard and brittle materials. The LADD process utilizes the high compressive and shear stresses (reducing brittle fracture) induced by the tool tip and laser heating to reduce the hardness and brittleness of the workpiece LADD increases the Material Removal Rate, decreases the tool wear, improves the edges and surface finish, and minimizes or eliminates sub-surface damages during the drilling process; increasing productivity and improving quality. LADD

6. 4 LADD current prototype The LADD system is coupled to a modified Universal Micro-Tribometer (UMT) which is a load/position controlled device to perform the drilling operation. An IR CW fiber laser with wavelength of 1070 nm and max. power of 100 W is used. A single edge diamond drilling bit with a 0.5 mm radius with -30° rake angle was used for this drilling operation.

7. 6 LADD Unique Advantages: Laser heats and thermally softens the material through an optically transparent diamond tool which leads to: - Less cutting forces - Less tool wear; Reduced machine down time - Higher material removal rate (MRR) - Increases productivity; Reduces overall cost - Reduces brittle fracture and decreases surface and subsurface damages - Healing or repairing surface and subsurface damages Compatible to use cutting fluid: - No laser interruption because of cutting fluid, compared to other laser or thermal assisted processes. - Benefits from Laser (Heat and thermally soften) and Cutting fluid (Lubrication) simultaneously. - Allows for chemical benefits

8. 6 LADD Applications: Drilling hard and brittle materials such as: - Ceramics - Composites (fiber reinforced) - Semiconductors - Glass and optical materials - Rocks/minerals Can be used in: - Auto industry - Aerospace industry - Optics and microelectronics - Oil and Gas www.morgantechnicalceramics.com www.theresanaanaquartey.com www.semiceramic.com www.dowelectronicmaterials.com global.kyocera.com compositesmanufacturingmagazine.com

9. 2017 – 2019 2017 2016 2015 2014 Micro-LAM 2005 - 2010 Science, Engineering, Technology (understanding) 2010-2014 Rotating Work piece Proof of concept, Demonstration Start Filing Patent Working prototype Rotating Spindle & Prototype File for Full Patent Industrial Testing and Evaluation Begin Research on Handheld/Portable Unit LADD Product Roadmap