Advanced Manufacturing Laboratory    

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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 GFRP—Part I: Bonding Improvement Through Diffusion and Precipitation (2017) D. Bian, B.R. Beeksma, D.J. Shim, M. Jones, Y.L. Yao.

A low concentrated polystyrene (PS) additive to epoxy is used, since it is able to reduce the curing reaction rate but not at the cost of increasing viscosity and decreasing glass transition temperature of the curing epoxy. The modified epoxy is cocured with a compatible thermoplastic interleaf during the vacuum assisted resin transfer molding (VARTM) to toughen the interlaminar of the composites. The diffusion and precipitation process between the most compatible polymer PSU and epoxy formed semi-interpenetration networks (semi-IPN). Uniaxial tensile tests were performed to quantify the effects of diffusion and precipitation regions on composite delamination resistance and toughness. Crack paths were observed to characterize crack propagation and arrest mechanism.

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

 

Tom Zhang has joined AML in September 2018 to start his MS/PhD program in manufacturing research.  Tom received his BS in Mechanical Engineering from Mississippi State University.

Prof. Yao attended MSEC/NAMRC Conference in Texas A&M June 18 to 21, 2018.  He presented a paper “Interlaminar Toughening of Fiber Reinforced Polymers by Synergistic Modification of Resin and Fiber,” which is based on collaboration with GE Global Research 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.

Prof. Yao was invited to attend Editors-in-Chief Summit of Scientific Journals sponsored by the Chinese Association of Science and Technology in China May 2018.  He delivered a keynote speech.  Other invitees include EICs of Science, Nature, and other leading journals.

Conner Finn and Breanna Johnson started their 8-week summer research with AML late May, 2018.  They were supported by Research Experience for Undergraduates (REU) program of National Science Foundation.  Each of them was involved in an active research project going on in the AML.

Nikita Lisenko successfully passed his doctoral qualifying exam May 2018.  Congratulations, Nikita!

Prof. Juan Pou joined AML as a Visiting Professor from Spain in December 2017 to conduct research in laser materials processing.  Prof. Pou runs the largest industrial laser research center in Spain and served as the Dean of Engineering at University of Vigo for six years.

Prof. Yao attended the ASME Technical Committee on Publications and Communications/Board of Editors meeting held in Tampa, FL on November 4-5, 2017.  He currently serves as Editor, ASME Journal of Manufacturing Science and Engineering.  He exchanged views with editors of other ASME journals.

Dakai Bian successfully defended his doctoral dissertation on September 22, 2017.  The title is Interlaminar Toughening of Fiber Reinforced Polymers.  Dakai is currently with ASM International, an elite semiconductor equipment company in Phoenix, AZ as a Senior Mechanical Engineer.

Nikita Lisenko joined AML in September 2017 to start his MS/PhD program in manufacturing research.  Nikita received his BSE in Materials Science and Engineering and BA in Physics from University of Pennsylvania.

 

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[This site was last updated on 10/22/2018]                                                                              | Department of Mechanical Engineering | SEAS | Columbia University |