Mohamad Mali, Mohd Azhari Mohd Rodzi, Mochamad Arif Irfa’i, Quang Nguyen Ho, Jamaluddin Mahmud
Composites are materials designed to achieve superior mechanical or physical properties, and understanding both their failure and dynamic behavior is essential. Despite numerous past studies on understanding this behavior of composite materials, information on the interrelationship between these two aspects remains limited. The study aims to conduct a process innovation and provide detailed understanding of the effect of fiber orientation on the Graphite epoxy and E-glass epoxy composite laminates failure behavior and natural frequency and the relationship between the failure and dynamic behavior of these two materials. To achieve this, a process innovation of the simulation of failure analysis and vibration analysis of these composite laminates under uniaxial tensile loading was conducted on 8-ply composite laminates under a lamination scheme of (-θ/45/-45/θ/-θ/45/-45/θ), where θ from 0° to 90°. Finite element models for simulation were developed and validated to ensure the reliability and validity of findings in this study are trustworthy and useful. The results show that both failures loads, and natural frequencies are not much affected by the fiber orientation under this lamination scheme. These two behaviors are also identified to be closely related under specific modes of natural frequency. The detailed effects of failure and natural frequency under fiber orientation and its relation are successfully acknowledged. The findings are expected to support the optimization of laminate design and enhance the structural performance of composite materials in engineering applications and contribute to more informed material selection. © 2026 Trans Tech Publications Ltd, All Rights Reserved.
Faculty of Engineering and Quantity Surveying, INTI International University, Persiaran Perdana BBN, Putra Nilai, Negeri Sembilan, Nilai, 71800, Malaysia; Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Surabaya, Lidah Wetan, Kec. Lakarsantri, Jawa Timur, Surabaya, 60213, Indonesia; Institute of Engineering and Technology, Thu Dau Mot University, Binh Duong, 820000, Viet Nam; Faculty of Mechanical Engineering, Universiti Teknologi MARA, Selangor, Shah Alam, 40450, Malaysia
