Advanced Materials for Applied Science and Technology by Edited by Arshad Munir Zaffar M. Khan

By Edited by Arshad Munir Zaffar M. Khan

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In analysis using ANSYS software, 10 rigid regions were used which were equally spaced along beam. The permissible values of Edge Sizes are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60. Graph of mesh sensitivity analysis has been shown in Fig. 5. It is obvious that solution has converged. Results and Discussion According to Ref. 084 mm. This value of warping will now be used as a yardstick to measure the error in various analyses. Results have been indicated in Table 3. It can be seen that original published results are for 70 rigid regions, and increasing number of rigid regions from one to seventy, reduces error.

The effectiveness of the fatigue damage model is tested by the finite element simulations of mode I, mode II and mixed-mode delamination tests. Two dimensional four nodes solid quadrangles are used to generate the finite element meshes to model the beam arms. Interface elements [19] are used for the modelling of debonding process at the interface. 2 mm is used along the length of the arm and four elements are employed in thickness. The material used is unidirectional HTA/6376C carbon/epoxy laminate and its properties are given in Table 1.

To limit temperature gradients through the thickness of sample, the heating rates are limited. This mould is placed between two plates of an electric press to move the piston. The pressure is adjustable in real time to keep it constant. Two heat flux sensors are placed in the bottom of the mould and in the piston. They are developed in our laboratory and each of them is composed of three thermocouples placed at different locations from the surface. Data treatment with a Beck inverse sequential algorithm provides temperature and heat flux density at the surface of the sensor.

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