相关题目
a line of damage of any depth and length in the material which causes a cross-sectional area change. A sharp object usually causes it
a damage area of any size which results in a cross-sectional area change. It is usually caused by contact with a relatively sharp object which produces a continuous, sharp or smooth channel-like groove in the material.
a partial fracture or complete break in the material.
a damaged area which is pushed in, with respect to its usual contour. There is no cross-sectional area change in the material, area edges are smooth.
A small decrease of material due to a knock etc. at the edge of a member or skin.
Any twisting, bending or permanent strain which results in misalignment or change of shape. May be caused by impact from a foreign object, but usually results from vibration or movement of adjacent attached components. This group includes bending, buckling, deformation, imbalance, misalignment, pinching, and twisting.
The destruction of metal by chemical or electro-chemical effect. Rust is oxidation or corrosion of metallic alloy part containing ferrous materials.
A damaged area which is pushed in or folded back on itself. The edges are sharp or well specified lines or ridges.
a damage area of all sizes which causes change in a cross-sectional area because of scuffing, rubbing, scraping or other surface erosion. It is usually rough and irregular.
when a separation of materials occurs due to an adhesive failure.
