By C. T. Pan, H. Hocheng (auth.), Hong Hocheng, Hung-Yin Tsai (eds.)
Nontraditional machining makes use of thermal, chemical, electric, mechanical and optimum assets of power to bind, shape and lower fabrics. Advanced research of Nontraditional Machining explains in-depth how every one of those complex machining methods paintings, their machining method parts, and procedure variables and commercial purposes, thereby supplying complex wisdom and clinical perception. This booklet additionally files the newest and often pointed out learn result of a couple of key nonconventional machining procedures for the main involved subject matters in commercial purposes, equivalent to laser machining, electric discharge machining, electropolishing of die and mildew, and wafer processing for built-in circuit manufacturing.
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Additional resources for Advanced Analysis of Nontraditional Machining
Though the current test results show that grooving parallel to fiber will produce less thermal damage to material, care should be taken in considering the effects of both Tc and the conductivity corresponding to various grooving directions. The undesired grooving direction resulting in large HAZ is also a function of Tc. It shows that grooving perpendicular to fiber orientation is more severely affected than grooving parallel to fiber orientation in the current experiment. Since carbon fiber has a much higher thermal conductivity (nearly two orders of magnitude higher) than the polymer matrix, the thermal conduction is basically along the fiber direction.
The comparison between the results of experiment and simulation with constant and temperature-dependent thermal conductivity is shown in Figs. 28. It shows that the prediction is improved by considering the temperature-dependent thermal conductivity. (1-89) 2 0 0 15 30 45 60 75 90 Orientation Relative to Fiber Axis (Degree) Fig. 5 Conclusions This chapter deals with an analytical evaluation of the HAZ formed during laser grooving along the principal material-directions with respect to workpiece thickness, immersed heat source, and phase changes.
19 Comparison between experimental and simulation results of HAZ using constant and temperature-dependent thermal conductivity. 1 Thermal Conductivity in Nonprincipal Directions The Laser Flash Method also can be used to measure the thermal conductivity of UD, MatUD, and [0/90] laminates in any direction. However, the experimental setup and preparation for test sample are expensive and time-consuming. In the following section, a general experimental and a theoretical method to determine thermal conductivity is presented.