Pamela King Benicewicz

Laser shock peening plasma diagnostics sensors for real time process monitoring

A system for monitoring a laser shock event includes a detector (20,74,110) connected to a controller (14). The controller (14) includes an input configured to receive a signal from the detector (20,74,110) that is indicative of an emission (36,75,128) associated with a laser shock event at a workpiece (26,56,120). A processor (16,76,140) is connected to the input and is configured to determine a cause of an unacceptable peen event from the signal associated with the emission (36,75,128).

In situ evaluation of metallic coatings via laser plasma spectroscopy

We present a method and apparatus that provides in situ, near real-time evaluation of metallic coatings used as protective barriers for various industrial applications. Identification of the elemental constituents of the coating and substrate is accomplished using the technique of laser plasma spectroscopy, whereby optical emissions from the plasma formed by focusing a high energy pulsed laser onto a part coating or substrate surface uniquely identify the elements present in the vaporized material. We present several applications, including use of this technique to determine coating presence, coating composition, coating thickness, coating composition as a function of depth, and identification of deposits on metallic surfaces.We present a method and apparatus that provides in situ, near real-time evaluation of metallic coatings used as protective barriers for various industrial applications. Identification of the elemental constituents of the coating and substrate is accomplished using the technique of laser plasma spectroscopy, whereby optical emissions from the plasma formed by focusing a high energy pulsed laser onto a part coating or substrate surface uniquely identify the elements present in the vaporized material. We present several applications, including use of this technique to determine coating presence, coating composition, coating thickness, coating composition as a function of depth, and identification of deposits on metallic surfaces.

Industrial applications of laser micro/nano material processing

As a high density and precision energy source, laser has been a powerful tool in microscale material processing, such as micro channel fabrication, micro hole drilling, micro milling of 3D structures, 3D micro deposition, etc. This paper reviews how to achieve the desired spatial resolutions, highlights some of the emerging industrial applications of laser micro/nano material processing, followed by the discussion of practical challenges.As a high density and precision energy source, laser has been a powerful tool in microscale material processing, such as micro channel fabrication, micro hole drilling, micro milling of 3D structures, 3D micro deposition, etc. This paper reviews how to achieve the desired spatial resolutions, highlights some of the emerging industrial applications of laser micro/nano material processing, followed by the discussion of practical challenges.