About the Additive Manufacturing Laboratory (AML)

   Since 2002, the AML at South Dakota School of Mines & Technology (SDSM&T) has been specializing in Laser Powder Deposition (LPD), a technique utilizing a focused laser beam to fuse metal/ceramic powder to a previously existing metal substrate. The AML currently houses a 3kW Nd-YAG laser, a 300W fiber laser, and three multi-axis robotics systems, enabling deposition of metals and ceramics on a wide variety of base materials of many shapes and sizes.

     Laser Powder Directed Energy Deposition is used for solid freeform fabrication [3D printing], brazing, welding, and cladding. Laser cladding is one of the AML’s primary focus areas, where the resulting deposition exhibits superior abrasion and/or corrosion resistance. This is useful in many industrial applications, significantly increasing equipment life in agriculture, aerospace, and mining industries, among many others.

      Using LPD’s solid freeform fabrication capabilities the AML designs and manufactures complex parts for other SDSM&T organizations and for industry. To maximize deposition quality, the AML utilizes advanced temperature sensors, including radiometric instruments, to monitor, diagnose, and control the LPD process. This, coupled with post-process material characterization, is used to enhance the R&D process.

   The AML is currently working to optimize deposition technology for several industrial applications, including internal bore laser cladding and thin-wall rapid-prototyping. In addition, the AML works with industrial partners to develop powdered alloys designed specifically for use in LPD applications. The AML also utilizes Direct Write Manufacturing, a technique that allows direct ‘printing’ of various mesoscale materials, including metals and ceramics for use in electrical and biomedical applications. Furthermore the AML lab also hosts summer camps and demonstrations for the community and future engineers (see STEM Ed. page for more details).