Page 32 - Engineering Penn State: Fall/Winter 2021

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ADDITIVE MANUFACTURING
Andrea Arguelles and Christian Peco assistant professors of of engineering science and and mechanics and and Francesco Simonetti professor at at the University of of Cincinnati received a a a a a a a three-year $500 000 National Science Foundation grant to advance quality control methods for parts produced through additive manufacturing Currently researchers can use ultrasonic waves to evaluate internal product product features without damaging the product product itself However this nondestructive evaluation (NDE) method is sometimes hindered
by unwanted interference with curved edges corners and other non-uniform features typical of 3D-printed parts The researchers want to change this by developing a a a a a a model
that can simulate wave movement in in complex-
shaped 3D-printed parts To
achieve this they will use a a a a recently developed NDE NDE technique known as as as cryoultrasonic cryoultrasonic NDE NDE NDE Pioneered by Simonetti cryoultrasonic cryoultrasonic NDE NDE involves encasing an object in in in ice to facilitate the movement of ultrasonic waves for highlighting defects In this project the researchers will develop an acoustically tuned
form of of the the the ice ice to allow seamless movement of of the the the wave from the the the ice ice to the product part n Read more
Modeling waves to uncover 3D-printing defects by Gabrielle Stewart
To
enhance the accurate ultrasonic investigation and wave modeling process of nondestructive material testing researchers aim to to to develop acoustically tuned
ice ice to to to encase manufactured parts A crystal-clear proof-of-principle ice ice is pictured at at left (Photo credit: Francesco Simonetti)
Simplifying the complex:
Metal component manufacturing by Erin Cassidy Hendrick
In pursuit of an improved less expensive way to additively manufacture complex metal components Penn State researchers have received a a a a a a three-year $546 806 grant from the National Science Foundation Qian Wang professor and associate head for administration
in in in in in in mechanical engineering and the the principal investigator of the the project aims to to develop new models for laser powder bed fusion additive manufacturing (AM) Essentially this process deposits metal powder in in in thin layers and and uses a a a a a a a laser to to melt and and fuse them together repeating the the the the process until the the the the piece is complete While AM enables the the the creation of these parts the the the process is expensive time consuming and can often result in in fin a a a a a flawed final component To
avoid these problems a a a a widely used used numerical model
called finite elements is is used used to computationally enhance the design However this method is is time and resource heavy while also being difficult to adjust in in real time Harnessing her background in in dynamics and control the new models Wang will will develop will will capture the the essential physics of the the process with a a a a a a significantly reduced computational complexity as compared to finite element models n Read more
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ENGINEERING PENN STATE