LAMSS-COMPOSITES. Note: MATLAB compiler runtime 9.1 is required to run LAMSS_COMPOSITES_V1.0. Step2: Download LAMSS-COMPOSITES_V1.zip.

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1 LAMSS-COMPOSITES 1.1 INSTALLATION Note: MATLAB compiler runtime 9.1 is required to run LAMSS_COMPOSITES_V1.0 Step1: Download MCRinstaller91.zip. Unzip and install MCRinstaller.exe. Step2: Download LAMSS-COMPOSITES_V1.zip. Unzip and run LAMSS_COMPOSITES_V1.0.exe. (run as administrator) 1.2 DESCRIPTION The LAMSS-COMPOSITES is a software GUI to retrieve and display the dispersion curves and steering angle from a database. Figure 1 Main interface of LAMSS-COMPOSITES V1.0 1

2 Three isotropic materials, four CFRP with different layups, one woven GFRP, and four new CFRP with different materials and layups are selected to generate the database. Database for other materials and layups can be further extended upon requests. The program LAMSS_COMPOSITES_V1.0 will automatically load the database in the database folder. The user can select the database from the Material-Layup pop-up menu in the control panel. The correspond database contains the phase velocity, group velocity, steering angle, and modeshape. The GUI will update the following figures. The top left figure is the phase velocity. The top right figure shows the group velocity. The bottom left has the Polar plot for phase velocity and Modeshape for wave mode of the selected frequency. The bottom right is steering angle. In the Control Panel, the user can click the button Property to display the detailed material properties (stiffness matrix and density) layups for the composite selected from the database. The user can view the material properties of each layer from the Layer number pop-up menu. Figure 2 shows material properties for the selected quasi-isotropic CFRP [45/-45/0/90]s. In addition, the user can change the Direction by typing the value (0-360) in the textbox or moving the slider. The specific Direction will update all the figures. To display the Modeshape of a certain wave mode at a specific frequency, the user can click the red dot in the phase velocity figure. The red dots on other figures will update automatically. The top right of figures will display the values for the phase velocity, group velocity, and steering angle. 2

3 Figure 2 Material properties for the selected quasi-isotropic CFRP [45/-45/0/90]s 1.3 SUPPORT If you need to contact the developers directly, you can also do so via hmei@ .sc.edu Please support us with your comments, suggestions, feedbacks. 3

4 APPENDIX The materials and layups used in LAMSS-COMPOSITES include: 1. unidirectional CFRP composite (Table 1) 2. crossply CFRP composite [0/90/0/90]s (Table 1) 3. quasi-isotropic CFRP composite [45/-45/0/90]s (Table 1) 4. crossply CFRP composite [0/0/90/90]s (Table 1) 5. woven GFRP composite (Table 2) 6. aluminum alloy 7075-T6, E=71.7 GPa, =0.33, = 2710 kg/m 3 7. steel AISI 4340 normalized, E=205 GPa, =0.29, = 7850 kg/m 3 8. titanium Ti-6Al-4V, E=113.8 GPa, =0.342, = 4430 kg/m 3 9. quasi-isotropic CFRP composite [90/0/45/-45]s (user request from Spain, Table 3) 10. woven GFRP composite [0]6 (user request from Germany, Table 4) 11. unidirectional CFRP composite [0]96 (Table 5) 12. quasi-isotropic CFRP composite [0/90/45/-45]3s (Table 5) Table 1 unidirectional CFRP composite engineering elastic properties and stiffness matrix [1]. 140 GPa GPa GPa GPa 5.7 GPa 3.4 GPa 1560 kg/m C GPa (1) Table 2 woven glass fiber composite properties and stiffness matrix [2] GPa 27.1 GPa 12.1 GPa GPa 4.9 GPa 4.9 GPa 1960 kg/m C GPa (2)

5 Table 3 quasi-isotropic composite properties and stiffness matrix from the Spanish user GPa 10.7 GPa 10.7 GPa GPa 5.8 GPa 3.6 GPa 1572 kg/m C GPa (3) Table 4 woven glass fiber composite properties and stiffness matrix from the German user. 14 GPa 14 GPa 5.3 GPa GPa 1.52 GPa 1.52 GPa 1418 kg/m C GPa (4) Table 5 unidirectional composite properties and stiffness matrix [3] GPa 9.08 GPa 9.08 GPa GPa 5.29 GPa 2.8 GPa 1570 kg/m C GPa (5) REFERENCE [1] Disperse User s Manual, Imperial College London, London, United Kingdom, [2] Pollack, P. and Yu, L. and Sutton, M.A. and Guo, S. and Majumdar, P. and Gresil, M, Full-Field Measurements for Determining Orthotropic Elastic Parameters of Woven Glass-Epoxy Composite Using Off-Axis Tensile Specimens. Experimental Techniques 38.4 (2012):

6 [3] Leckey, Cara AC, Matthew D. Rogge, and F. Raymond Parker. Guided waves in anisotropic and quasi-isotropic aerospace composites: Three-dimensional simulation and experiment. Ultrasonics 54, no. 1 (2014):

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