Versatility of Waterjet Technology

Peter H.-T. Liu earned his doctorate from Colorado State University, USA, in 1972 and boasts a distinguished 50-year career in experimental fluid dynamics and waterjet technology. He joined Flow Research/Flow Industries, Inc. in 1973 and spearheaded his R&D efforts in experimental fluid dynamics, focusing on qualitative and quantitative flow visualization for both laboratory and field investigations. Research topics spanned from naval hydrodynamics, turbulence in homogeneous and stratified fluids, transport of pollution in complex terrain, to wake studies of wind turbines and aircraft. Under the mentorship of Dr John H. Olsen, he transitioned his research focus in 1995 to waterjet technology, leading to significant advancements and successful commercialization in waterjet micromachining. Dr Liu’s extensive experience uniquely prepared him to tackle waterjet challenges, fostering collaborations with universities and research institutes, resulting in his numerous publications. Despite retiring from OMAX/Hypertherm in March 2022, he continues his R&D endeavors, currently focusing on precision micromachining, and is working on a second book detailing the history of waterjets.

Part 1 1. Measurements of Water-Droplets and Abrasive Speeds in an Ultrahigh-Pressure Waterjets and Abrasive-Waterjets 2. Near-Net Shaping of Optical Surfaces with UHP Abrasive Suspension Jets 3. Evaluation of Nozzle Health States for AWJ Machining 4. A Vanishing Abrasive Cryogenic Jet for Airframe Depainting 5. Enhancement of Ultrahigh-Pressure Technology with LN2 Cryogenic Jets Part 2 6. CFD and Physical Modeling of UHP AWJ Drilling 7. Hole Drilling with Abrasive Fluidjets Part 3 8. Collateral Damage by Stagnation Pressure Buildup during Abrasive-Fluidjet Piercing 9. Machining Honeycomb Composites with Abrasive-Waterjets 10. Piercing in Delicate Materials with Abrasive-Waterjets 11. Applications of Abrasive-Fluidjets for Precision Machining of Composites Part 4 12. Waterjet Technology for Machining Fine Features Pertaining to Micromachining 13. Micro Abrasive-Waterjet Technology 14. Novel Processes for Improving Precision of Abrasive Waterjet Machining 15. Versatile Micro Abrasive Waterjet Technology for Machining Nanomaterials Part 5 16. Roles of Abrasives in AWJ Meso-Micro Machining 17. Roles of Taper Compensation in AWJ Ultra-Precision Machining 18. Precision Machining of Advanced Materials with Waterjets Part 6 19. Application of Abrasive-Waterjet for 3D Machining 20. Advanced Waterjet Technology for Machining Curved and Layered Structures 21. Advanced Abrasive Waterjet for Multimode Machining Part 7 22. Abrasive-Waterjet Technology for Biomedical Applications 23. Low-Cost Manufacturing of Flow Channels with Multi-Nozzle Abrasive-Waterjets: A Feasibility Investigation 24. Applications of Abrasive-Waterjets for Machining Fatigue-Critical Aerospace Aluminum Parts 25. Fatigue Performance Enhancement of AWJ-Machined Aircraft Aluminum with Dry-Grit Blasting 26. Machining of Aircraft Titanium with Abrasive-Waterjets for Fatigue Critical Applications Part 8 27. Economic and Technical Efficiency of High Performance Abrasive Waterjet Cutting 28. "7M" Advantage of Abrasive Waterjet for Machining Advanced Materials Part 9 29. Performance Comparison on Meso-Micro Machining of Waterjet, Lasers, EDM, and CNC Milling 30. Performance Comparison of Subtractive and Additive Machine Tools for Meso-Micro Machining Part 10 31. Review of Accomplishments in Abrasive-Waterjet Technology from Macro to Micro Machining: Part 1 32. Review of Accomplishments in Abrasive-Waterjet Technology from Macro to Micro Machining: Part 2