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Laser peening (LP), or laser shock peening (LSP), is a surface engineering process used to impart beneficial residual stresses in materials. The deep, high-magnitude compressive residual stresses induced by laser peening increase the resistance of materials to surface-related failures, such as fatigue, fretting fatigue, and stress corrosion cracking.
Dr. Allan Clauer, an original patent holder of the laser peening process, [3] and a Battelle inventor of the laser shock peening process, joined LSPT as Vice-President later in 1995. In 1996 to 1999, LSPT assembled and delivered three high power ND: Glass laser peening systems to General Electric Aviation in Cincinnati, Ohio.
In metallurgy, peening is the process of working a metal's surface to improve its material properties, usually by mechanical means, such as hammer blows, by blasting with shot (shot peening), focusing light (laser peening), or in recent years, with water column impacts (water jet peening) and cavitation jets (cavitation peening). [1]
Metal Improvement Company LLC, part of Curtiss-Wright, is a company specializing in metal surface treatments.. MIC provides multiple technical services for the metal treatment industry, including thermal spray, solid film lubricant and parylene coatings, and materials testing services; but is best known for its legacy shot peening technology, which can enhance the performance of metal ...
This technique is part of the High Frequency Mechanical Impact (HFMI) processes. Other acronyms are also equivalent: Ultrasonic Needle Peening (UNP), Ultrasonic Peening (UP). Ultrasonic impact treatment can result in controlled residual compressive stress, grain refinement and grain size reduction.
Laser peening; P. Peening; S. Shot peen forming; Shot peening of steel belts; Steel abrasive This page was last edited on 14 January 2011, at 18:55 (UTC). Text is ...
Thermal shock resistance measures can be used for material selection in applications subject to rapid temperature changes. The maximum temperature jump, , sustainable by a material can be defined for strength-controlled models by: [4] [3] = where is the failure stress (which can be yield or fracture stress), is the coefficient of thermal expansion, is the Young's modulus, and is a constant ...
Laser-induced incandescence (LII) is an in situ method of measuring aerosol particle volume fraction, primary particle sizes, and other thermophysical properties in flames, during gas-phase nanoparticle synthesis, and in aerosol streams more broadly.