The article investigates how the size and shape of materials affect their ability to resist cracking. By using 3D imaging, researchers measured crack sizes and studied how materials break under different conditions. They compared how materials break in one way (Mode-I) to how they break in another way (Mode-II). Concrete and mortar beams of different sizes were tested to see how they break under pressure. The researchers also looked at how steel-reinforced materials stick together under pressure. They found that the size and shape of materials can affect how they break and stick together.