AM software boosts quality

InfiniAM Sonic acoustic process monitoring software has been launched by Renishaw to complement the company’s existing InfiniAM suite of additive manufacturing (AM) monitoring tools. The software enables engineers to detect acoustic events within the AM build chamber and turn this data into useful information about build quality. The software is said to be the first of its kind in the AM industry.

Renishaw’s InfiniAM Sonic is installed into the RenAM 500Q system as a factory-fit option and includes four acoustic energy sensors to detect vibration in the build. These sensors detect minute vibrations and collect sound waves so that they can be heard, viewed and analysed. Using four high-frequency sensors in different locations results in a slight time difference, due to the speed of sound. The software uses this time difference to triangulate the position of noise on the build plate. In addition, the software presents a level of certainty regarding where the noise occurred, and the magnitude. This data can then be combined graphically with other sensor data to build a comprehensive view of the part and the conditions at time of build.
The software works alongside InfiniAM Central and InfiniAM Spectral, which provide improved understanding of build quality, increased confidence in the build process and accelerated process development, reports Renishaw. A mobile app, InfiniAM Central, is also available, so that users can receive notifications on their build process in near real-time.
David Ewing, AM product manager at Renishaw, says: “The rapid heating and cooling that takes place during an AM build leads to residual stress in the part. While each laser weld results in a small amount of stress, residual stress can build up within the part, and if it increases past the strength of the metal it may lead to a fracture in the support material or part itself.”
For further information www.renishaw.com

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