Welcome to the Advanced Manufacturing Laboratory
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.
Interface Geometry for Laser Joining of NiTi to
Stainless Steel Wires (2013).
G. Brandal, G. Satoh, Y.L. Yao, S. Naveed
By using a cup and
cone geometry at the interface, the tensile
strength of laser joined nickel titanium and
stainless steel wires can be increased.
Precise heat input is necessary in order to
prevent the formation of brittle intermetallic
Joining of Continuous Glass Fiber Composite
Preforms (2013). H. Tan, Y.L. Yao
A two step laser process is developed to form
fusion bonds between fibers within a single
bundle and between adjacent fiber bundles.
Coupled heat transfer and viscous flow modeling
is carried out to investigate the temperature
and dynamics of the joining process under three
experimentally observed conditions.
of hydrogen on surface texturing and
crystallization of a-S:H thin film irradiated by
excimer laser (2012). H. Wang, F.
Lusquinos, Y.L. Yao
Excimer laser processing of amorphous silicon
thin films produces micron size spikes formation
on its surface, and simultaneous crystallization
occurs in a one-step process. Optical absorption
is enhanced by light trapping via multiple
reflections through the surface geometry
changes, and partial crystallization may
increase the overall stability.
Grant Brandal gave a guest lecture to an
introductory mechanical engineering class.
The talk was aimed at exposing the students
to various manufacturing methods, and the
fundamental science behind these processes.
Professor Yao was invited to visit and give
a seminar at The Institute of Optics,
University of Rochester, on November 4,
2013. The topic of the presentation
was "Laser Surface Texturing,
Crystallization and Scribing of Thin Films
in Solar Cell Applications."
Master's student Jenny Ardelean recently
traveled to Baltimore, Maryland to attend
the Society of Women Engineers National
Conference. As a representative of Columbia
University, Jenny was able to talk with both
undergraduate women and professional
engineers in an effort to recruit graduate
students to the university. (10/25/13)
Dr. Damir Kolich
and Jesús del Val García have recently
joined our lab as Visiting Scholars. Damir
received his PhD from University of Rijeka,
Croatia. His doctoral thesis is on lean
manufacturing and Monte Carlo simulation.
He in fact was born near New York and has
now returned to the US. Jesus is with the
laser materials processing group within the
Applied Physics at University of Vigo,
Spain. His areas of research include laser
micro-cladding. Welcome to both (9/9/13)