Mechanical Characterisation of Polyester-Based Fibreglass Composites with Aluminium Phosphate via FEA and Experimental Validation. - Saat, Asmalina Mohamed; Zulkarnain, Muhammad; Khairussaleh, Nor Ashikin Muhamad; Khalid, Norfadhlina; Rosli, Syarah Nabihah; Mukhtar, Zaimi Zainal; Zakaria, Zainul Azhar (IAENG International Journal of Applied Mathematics, 2026)