Application of lasers and pulsed power to coating removal

Chris M. Young; William M. Moeny; Randy D. Curry; Ken McDonald; John T. Bosma

doi:10.1117/12.204995

3 March 1995 Application of lasers and pulsed power to coating removal

Chris M. Young, William M. Moeny, Randy D. Curry, Ken McDonald, John T. Bosma

Proceedings Volume 2374, Novel Applications of Lasers and Pulsed Power; (1995) https://doi.org/10.1117/12.204995
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

Lasers and other pulsed power systems are uniquely suited for removal of coatings from a wide variety of substrates. Coatings which can be removed by these systems include paint, adhesives, epoxies, dips, rust, scale, and bird droppings. Suitable substrates include wood, metal, cloth, stone, ceramic, plastics, and even skin. These systems have the advantage over chemical stripping or mechanical abrasion in that the substrate is left virtually unharmed and in many cases the residue is reduced to a form that is more easily disposed of without toxic byproducts or expensive refurbishment. Furthermore, laser and other pulsed power based systems can be operated using only local containment without the need for special operator protective gear or complete enclosure of the substrate structure. Additional advantages are gained in these systems because they typically combine multiple removal mechanisms for greater effectiveness. For example, pulsed lasers create rapid heating of the coating. This rapid heating can result in chemical breakdown of the coating, thermomechanical stress induced dislocation, shock wave agitation, and physical ablation. This paper presents some of the latest research findings on coating removal using these systems. A comparative survey of the system technology, effectiveness, cost, and application is presented. Also presented is a survey of the commercial potential for the systems. Systems which are presented include lasers (CW, pulsed, Infrared, UV, etc.), flashlamps, electro-cathodic debonders, electron beams, and glow discharges.

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Chris M. Young, William M. Moeny, Randy D. Curry, Ken McDonald, and John T. Bosma "Application of lasers and pulsed power to coating removal", Proc. SPIE 2374, Novel Applications of Lasers and Pulsed Power, (3 March 1995); https://doi.org/10.1117/12.204995

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KEYWORDS

Coating

Pulsed laser operation

Pulsed power

Lead

Abrasives

Nd:YAG lasers

Bridges

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