Adhesion tests are methods used to evaluate how well a coating, paint, or adhesive sticks to a surface. These tests help determine the durability and performance of materials in various applications, ensuring they can withstand environmental factors like moisture, temperature changes, and mechanical stress. Common types of adhesion tests include the cross-hatch test and pull-off test. The results of adhesion tests are crucial for industries such as construction, automotive, and aerospace, where strong bonds are essential for safety and longevity. By assessing adhesion, manufacturers can improve product quality and reduce the risk of failures in their applications.