Additive manufacturing with laser and powder-bed

One of the most applied additive manufacturing method for metals is based on a laser scanner and a powder-bed where the metal powder is distributed over a tray and the processing laser melts it according to the desired pattern. After the pattern is created, a new layer of powder is added and the process repeats. The process enables accurate processing and elimination of spatter is essential. High-speed imaging with CAVILUX laser illumination provides high-quality images of the process.

Video material is courtesy of Nobby Tech Ltd. In Japan.

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Comparison video: Halogen light vs. CAVILUX laser illumination

Comparison video: Halogen light vs. CAVILUX laser illumination

Visualization of a discharge of an electrical switch (16 A, B curve) at 2000 frames per second. Electrical switches are key safety components in many systems. High-speed imaging is used to study their operation. Choosing the right lighting matters. The left video shows the process illuminated with a halogen light. Motion blur and the arc are visible reducing the quantity and quality of information. With CAVILUX laser illumination the arc is suppressed and motion blur eliminated thus providing clear images.

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Submillimeter ice crystal formation at 6 km altitude

Image of ice chrystal

Image of submillimeter ice crystal formation at 6 km altitude. The image is taken with special measurement system installed at the wing of an airplane. Due to the high velocity of the plane, capturing the ice crystals without motion blur requires a very short camera shutter or light pulse. CAVILUX is used in the setup as illumination because of its ability to create very short light pulses.

Image courtesy of Dr. Emma Järvinen and Dr. Martin Schnaiter, Karlsruhe Institute of Technology.

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Great experience from short course on high-speed imaging at MIT Edgerton Center

Cavitar would like to thank MIT Edgerton Center for organizing the Short Course about high-speed imaging in June this year and the possibility to share our knowledge about laser illumination.

During the 4-day course the participants gained a wide knowledge about high-speed imaging and motion analysis. The topics covered cameras, optics, illumination, software and other relevant topics. After the theory lessons the participants were able get hands on experience with imaging systems in different lab works.

During the lab session about strobe lights, course participants were able to take an image of their business cards shot by a rifle bullet. With a digital camera, a power full strobe light and the correct triggering one got fascinating images.

More information on 2017 course can be found on the organiser’s website:
http://professional.mit.edu/programs/short-programs/high-speed-imaging

Picture Courtesy of Dr. Jim Bales, MIT Edgerton Center

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