What effect does moisture have on wood structures?

Moisture can significantly affect the structural integrity and performance of wood used in aviation applications. The presence of moisture in wood can lead to warping, which is the distortion of the wood from its original shape. This happens because wood is an organic material with a cellular structure that can swell or shrink depending on the moisture content.

When wood absorbs moisture, its fibers expand, which can cause it to bow, twist, or cup. Such changes can compromise the fit and function of wooden components in an aircraft. In aviation, where precision and reliability are critical, any warping or damage caused by moisture can result in severe operational issues.

Moreover, excessive moisture can lead to other forms of damage, such as mold growth, decay, and increased susceptibility to insect infestations. Therefore, it is essential to control moisture levels to maintain the durability and safety of wood structures in aviation. This understanding helps inform wood treatment practices and the selection of materials for aircraft manufacturing and maintenance.