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Welcome to the Advanced Manufacturing Laboratory

Here we focus on the scientific investigation of advanced manufacturing processes to improve quality and productivity in industry, as well as advanced robotic techniques for industrial and health care applications.  Much of our work accomplishes this via laser technologies.

Recent Publications

Laser Forming of Sandwich Panels with Metal Foam Cores, (2018)T. Bucher, S. Cardenas, R. Werma, W. Li, Y.L. Yao.

Laser forming allows bending metal foam sandwich panels up to large angles without reducing the shock-absorption capacity of the foam core or delaminating the metallic facesheets. This technology opens up many potential applications in the aerospace, automotive, and energy industries.

 

Interlaminar Toughening of Fiber-Reinforced Polymers by Synergistic Modification of Resin and Fiber, (2019). Bian, D., Tsui, J.C., Kydd, R.R., Shim, D.J., Jones, M., Yao, Y.L.

The synergistic effect of combining different modification methods was investigated in this study to improve the interlaminar toughness and delamination resistance of fiber reinforced polymers (FRP). Epoxy-compatible polysulfone (PSU) was end-capped with epoxide group through functionalization, and the fiber surface was chemically grafted with an amino functional group to form a micron-size rough surface. Consequently, the long chain of PSU entangles into cross-linked thermoset epoxy network, additionally, epoxide group on PSU further improves the bonding through chemical connection to the epoxy network and amino group on the fiber surface. The feasibility of using this method in vacuum-assisted resin transfer molding was determined by rheometry. The chemical modifications were characterized by Raman spectroscopy to determine the chemical structures. Synergistic effect of the modification was established by mode I and mode II fracture tests, which quantify the improvement on composites delamination resistance and toughness.

Laser Shock Peening for Suppression of Hydrogen-Induced Martensitic Transformation in Stress Corrosion Cracking (2017).  G. Brandal, Y.L.Yao      

Laser shock peening (LSP) improves the resistance of a material to stress corrosion cracking. The increased resistance is not just attributed to compressive residual stresses, but is also due to microstructural changes that occur during LSP. Dislocations created during LSP reduce the hydrogen concentration, thereby preventing the phase transformation from austenite to martensite.

 

 

 

Recent News

 

AML welcomed two new PhD students in Fall 2019. Veronica Over is no stranger.  She received her BS and is completing her MS degree, both in Mechanical Engineering at Columbia University.  In the past summer, She interned at the premiere semiconductor equipment manufacturer, ASML in CT.  Estefania Bohorquez joined us from University of Central Florida, where she received a BS in Civil Engineering.  She had research experience in Germany and MIT Lincoln Lab and is a recipient of the NSF Graduate Research Fellowship Program (GRFP).  A warm welcome to both again!

Prof. Yao attended MSEC/NAMRC Conference in Erie, PA June 10-13, 2019.  He presented a paper 3D Laser Forming of Metal Foam Sandwich Panels, which is based on a collaboration with Boeing Company and funded by a GOALI grant from National Science Foundation.  He also hosted an editorial board meeting of ASME Journal of Manufacturing Science and Engineering, of which he is the editor.

Tanzim Azad and Conner Evans started their 8-week summer research with AML June 3, 2019.  They were supported by Research Experience for Undergraduates (REU) program of National Science Foundation.  Each of them is involved in an active research project going on in the AML.

Tom Zhang successfully passed his doctoral qualifying exam May 2019.  Congratulations, Tom!

Dr. Grant Grandal, a recent alumni of AML, received the prestigious Outstanding Young Manufacturing Engineer Award from SME https://www.sme.org/2018-outstanding-young-manufacturing-engineers/ during the 46th North American Manufacturing Research Conference held June 18-22, 2018 at Texas A&M University.  The award was conferred partially based on his work at GE Global Research since he graduated from AML. The award is to recognize accomplished individuals at age of 35 or younger.

 

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[This site was last updated on 11/08/2019]                                                                              | Department of Mechanical Engineering | SEAS | Columbia University |