... ,” International Journal of Surface Science and Engineering , 2 ( 3/4 ), pp. 252 – 264 . 10.1504/IJSURFSE.2008.020497 Molian , R. , Shrotriya , P. , and Molian , P. , 2008 , “ Thermal Stress Fracture Mode of CO2 Laser Cutting of Aluminum Nitride ,” Int. J. Adv. Manuf. Technol. 0268-3768...

...B. S. Yilbas; S. S. Akhtar; A. Matthews; C. Karatas; A. Leyland The results of experiments into laser assisted gas carbonitriding of a Ti–6Al–4V alloy are reported. The temperature and thermal stress fields were simulated using finite element analysis. Microstructural changes in the laser treated...

...J. Harris; R. Akarapu; A. E. Segall Despite the many advantages of using lasers for welding ceramics (alumina in particular), cracks induced by the resulting and severe thermal stresses are often detrimental to weld quality and strength. While many factors contribute to the formation...

...Salman Nisar; M. A. Sheikh; Lin Li; Andrew J. Pinkerton; Shakeel Safdar In laser cleaving of brittle materials using the controlled fracture technique, thermal stresses are used to induce a single crack and the material is separated along the cutting path by extending the crack. One of the problems...

... ceramics. 13 10 2006 08 11 2007 06 05 2008 brittleness ceramics fracture hardness laser beam cutting thermal stress cracking water jet cutting wear laser cutting water-jet ceramics thermal stresses precision machining In this paper, we present the results...

... industrial activity with applications in critical engineering systems such as heat exchangers, hydraulic systems, boilers, etc. Laser tube bending utilizes the thermal stresses generated during laser scanning to achieve the desired bends. The parameters varied to control the process are usually laser power...

... stresses is highly desirable. This paper examines the effect of deposition patterns and phase transformation kinetics on induced thermal stresses. The proposed model is based on the metallo-thermo-mechanical theory for sequentially coupled temperature, phase transformation, and stress/strain fields. Finite...

... is needed. In this part, a three-dimensional finite element (FE) model of machining hardened 52100 steel is constructed, and coupled thermal-stress analysis is performed to obtain the material thermal history. Then the material softening model uses the computed thermal history as input to predict...

... optical fibre fabrication drawing (mechanical) optical fibre cladding glass temperature distribution thermal stresses thermal stress cracking finite volume methods Optical fibers are drawn from preforms (melting fused silica glass rods) typically made up of two concentric cylinders...

...Ching-Kong Chao; Shih-Yu Hung; Cheng-Ching Yu The concept of rapid thermal processing has many potential applications in microelectronics manufacturing, but the details of chamber design remains an active area of research. In this work the influence of lamps radius on the thermal stresses...

... a nonconduction laser heating model, in which the phase change is accommodated. Temperature dependent nitrogen diffusion coefficient is used when computing the nitrogen concentration distribution in the substrate material. Thermal stresses due to temperature gradient are predicted in the solid region...

...S. Z. Shuja; A. F. M. Arif; B. S. Yilbas Laser repetitive pulse heating of the workpiece surfaces results in thermal stresses developed in the vicinity of the workpiece surface. In the present study, laser repetitive pulse heating with a gas assisting process is modelled. A two-dimensional...