Mohammed, R.H. and Salih, R.M. 2026. Effect of Walnut Shell Powder and Nano-TiO2 on the Mechanical, Thermal, and Water Absorption Properties of Polyester Composites. Kufa Journal of Engineering. 17, 3 (Aug. 2026), 665–688. DOI:https://doi.org/10.30572/2018/KJE/170338.