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Optimized Strength of Chopped Strand Mat Glass Fiber-Reinforced Polyester Laminates with Single-Edge Notch under the Effects of Notch Shape/Size and Strain Rate

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Abstract

The chopped strand mat (CSM) glass fiber-reinforced polyester composite is commonly used for building and repairing in various industrial fields. Its sensitivity to the edge notches has not been considered well in the literature. This paper studies the notch tensile strength (NTS) and fracture characteristics of the proposed composite under the influence of each of the strain rate, notch shape and size with three levels. Nine tests have been designed according to the Taguchi’s orthogonal array. Then, analysis of variance (ANOVA) has been applied to analyze the experimental results of the NTS. Different models of SEN specimens were simulated to predict the stress distribution and concentration. Results reveal that the notch size, notch shape and strain rate have the effectiveness of 46.7, 40 and 6.4% on the failure stress, respectively. The smallest U-shape notch and lowest strain rate conditions achieve highest notch tensile stress. The numerical simulation results confirm the experimental results.

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Data Availability

The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The author would like to acknowledge the Mechanical Engineering Department of Sulaimani Polytechnic University for their support. Special thanks to the Mechanical Department of Koya University for their Assistance.

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  1. Mechanical Engineering Department, College of Engineering, Sulaimani Polytechnic University, Sulaimani, Kurdistan, Iraq

    Rzgar M. Abdalrahman

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  1. Rzgar M. Abdalrahman
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Correspondence to Rzgar M. Abdalrahman.

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Abdalrahman, R.M. Optimized Strength of Chopped Strand Mat Glass Fiber-Reinforced Polyester Laminates with Single-Edge Notch under the Effects of Notch Shape/Size and Strain Rate. Trans Indian Inst Met 76, 2857–2864 (2023). https://doi.org/10.1007/s12666-023-02979-1

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