What is the major damage to aluminum structures caused by exposure to the weather?

Corrosion is the major damage to aluminum structures resulting from exposure to the weather because aluminum is particularly susceptible to environmental factors such as moisture, salt, and other corrosive elements present in the atmosphere. When aluminum reacts chemically with oxygen, it forms aluminum oxide, which usually creates a protective layer; however, if this layer is compromised, the underlying metal can corrode more rapidly.

Exposure to the elements can accelerate the corrosion process, particularly in coastal areas where salt water is prevalent. This can lead to significant structural weakening over time, affecting the integrity and safety of the aluminum structures.

While cracking, fatigue, and warping can also affect aluminum, they are typically not primarily caused by weather exposure. Cracking often results from stress and improper fabrication rather than environmental conditions. Fatigue is associated with cyclic loading and unloading, which may happen in operational contexts rather than due to weather exposure. Warping is generally linked to temperature changes or improper storage and handling rather than direct weather exposure. Therefore, corrosion stands out as the primary concern when discussing weather damage to aluminum structures.