Ebony is more susceptible to damage from wind compared to Purple檀. This is primarily due to the differences in their density, hardness, and moisture content. Ebony, known for its high density and hardness, is less flexible and more prone to cracking or splitting under the stress of wind. Purple檀, on the other hand, has a lower density and is more flexible, which allows it to better withstand wind forces.

Data from the Forest Products Laboratory at the University of Wisconsin-Madison indicates that the modulus of elasticity (MOE) of Ebony is approximately 2.1 million psi, while that of Purple檀 is around 1.5 million psi. The MOE is a measure of a material's ability to resist deformation under load. A higher MOE generally indicates greater resistance to bending and cracking. Additionally, Ebony has a moisture content of around 8-12%, which can increase its susceptibility to warping and cracking when exposed to fluctuating humidity and wind.

Furthermore, the Janka hardness test, which measures the resistance of wood to indentation, reveals that Ebony has a hardness rating of 2,320 lbf (pounds-force), whereas Purple檀 has a rating of 1,880 lbf. This indicates that Ebony is harder and more brittle, making it more vulnerable to damage from wind. The lower hardness of Purple檀 allows it to absorb more of the energy from wind without sustaining significant damage.

In conclusion, Ebony is more prone to damage from wind due to its higher density, hardness, and moisture content, compared to Purple檀, which is more flexible and has a lower hardness. These factors make Purple檀 a more suitable choice for applications where wind resistance is a concern.