Researchers used 3-D computer simulations to study how stress is distributed in composite plates with holes when they are loaded. They looked at how the orientation of fibers in the material affects stress levels around the hole. The study found that the way the fibers are aligned can change how much stress is concentrated near the hole. The thickness of the plate and the size of the hole also play a role in stress levels. The results were shown in graphs and discussed, showing that the orientation of fibers and plate dimensions can impact stress concentration in composite materials.