Flexural Motion Due to Laser Heating Applications


Yilbas B. S. , Al-Zaharnah I., Sahin A. Z.

FLEXURAL TESTING OF WELD SITE AND HVOF COATING CHARACTERISTICS, pp.15-101, 2014 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Publication Date: 2014
  • Doi Number: 10.1007/978-3-642-54977-9_2
  • Title of Journal : FLEXURAL TESTING OF WELD SITE AND HVOF COATING CHARACTERISTICS
  • Page Numbers: pp.15-101
  • Keywords: Laser heating, Temperature, Stress, Flexural motion, WAVE GENERATION, EVAPORATION PROCESS, STEEL SURFACE, PULSE, ABLATION, LOCATION, FORCE

Abstract

Laser evaporative heating of solid surfaces involves phase change process and recoil pressure generation in between the vapor and liquid phases. Recoil pressure remains high during a short period of time, which in turn causes mechanical vibration of the body irradiated by a laser beam. When the body resembles a cantilever arrangement and if the laser radiation takes place at the free end of the cantilever beam, the body undergoes a flexural motion. Depending on the laser pulse intensity and duration, the displacement characteristics of the cantilever beam provide information on the mechanical properties of the irradiated beam. In this chapter, laser pulse heating is formulated and thermal stress developed in the heated region is analyzed. In addition, flexural behavior of the cantilever beam is presented in detail.