1. Surface Texturing to Control Friction
Presenter: Jyhwen Wang, TAMU
PIs: Jyhwen Wang, Chao Ma, Hong Liang, TAMU
Jian Cao, Jane Wang, Yip-Wah Chung, Northwestern

2. 8. Surface Texturing to Control Friction
Industrial Need and Relevance: Metal deformation is strongly influenced by contact friction between workpiece and tooling surfaces. Surface texturing can be an effective means of controlling friction.
(2015)
NSF I/UCRC Planning Meeting

3. 8. Surface Texturing to Control Friction
Project Objectives:
To develop laser surface texturing techniques to generate composite textures on tooling surface; and
To understand their tribological effects during metal forming.
Negative Feature
(~10 to 100 mm)
J. Phys. D: Appl. Phys. 47 (2014)
Positive Feature
(~500 mm to 1 mm)
NSF I/UCRC Planning Meeting

4. 8. Surface Texturing to Control Friction
Punch displ.: 18 mm (onset of 1st rupture)
Pure Ni after laser melting at 0.18 mJ
Ni/Al2O3 after laser melting at 0.18 mJ
Thermocapillary flow fully developed
Thermocapillary flow slightly initiated
Ni/Al2O3 before laser melting
Pure Ni before laser melting
Approach/Methodologies:
Track spacing
Fiber Laser PC
DC Power Supply
Scan Head
J. Manuf. Sci. E (2016)
NSF I/UCRC Planning Meeting

5. 8. Surface Texturing to Control Friction
Punch displ.: 18 mm (onset of 1st rupture)
Steel-to-Steel contact
Approach/Methodologies:
Meng, F., Zhou, R., Davis, T., Cao, J., Wang, Q., Hua, D., Liu, J., (2010) “Study on Effect of Dimples on Friction of Parallel Surfaces Under Different Sliding Conditions”, Applied Surface Science, 256, no. 9:

6. 8. Surface Texturing to Control Friction
Approach/Methodologies: Texturing Capabilities at Northwestern

7. 8. Surface Texturing to Control Friction
Deliverables:
Knowledge required to develop advanced surface texture
Effects of designed surface textures on friction
Performance of the designed surface textures in sheet metal forming processes
NSF I/UCRC Planning Meeting

8. 8. Surface Texturing to Control Friction
Budget and Timeline: Estimated cost of the project is $300K.
Task / Milestone
Year 1
Year 2 Q1 Q2 Q3 Q4
Design Surface Texture
Develop Laser Texturing Techniques
Conduct Friction Tests
Forming Experiments
NSF I/UCRC Planning Meeting

9. 8. Surface Texturing to Control Friction
Discussion:
Are the industrial need and relevance accurately captured?
Are the objectives realistic and complete?
Are the approaches technically sound and appropriate?
Are there alternative implementation paths or better approaches?
Are the deliverables impactful to industrial partners?
Are the budget and timeline reasonable?
Are there conflicts with intellectual property or trade secrets?
List additional project specific questions are appropriate.
NSF I/UCRC Planning Meeting