###### Abstract
The influence of the thickness on the deformation behavior was also confirmed examining the stiffness of the specimens during the impact. In contrast with previous literature, samples show high sensitivity to the impact energy level (considering the studied conditions). The impact damage was more extensive in the thin laminates than in the thick ones. Damage assessment is an important evaluation for the after-impact life of components. [PERSON] et al. [16] evaluated damage by several techniques such as eye observation, back face relief, terahertz spectroscopy, laser vibrometry, X-ray microtomography, and microscopic observations. Except for microscopic observation, all of the other techniques can be categorized as non-destructive techniques (NDTs). However, just X-ray tomography can assure enough precision and accuracy for damage quantification. [PERSON] et al. [17; 18] confirmed this assumption. In fact, in their works, they compared energy absorption and damage quantification for GFRP by eye-observation, infrared observation, and X-ray tomography. Specific energy absorption (SEA) was calculated and compare among these NDTs. However, the working environmental conditions must be taken into account as the fundamental boundary condition. In fact, unavoidable degradation processes could lead to catastrophic failure of the structure. A common scientific practice to evaluate the degradation state is the evaluation of moisture percentage retained by samples related to the hours of aging. [PERSON] et al. [19] have correlated the water diffusion coefficient of the material and its degree of saturation to the degradation of the mechanical properties. Furthermore, [PERSON] et al. [20] and [PERSON] et al. [21] combined the mechanical tests respectively compression and tensile to the chemical analysis, such as FTIR spectroscopy, in order to evaluate the effects of hygothermal and UV exposure on the polymer composites. In fact, it has been found that the degradation of the material at the fiber/matrix interface contributes to increase the fiber buckling and the matrix ductility. Many literature articles report the impact characteristics of composite materials [13; 14; 15; 16; 17; 18], but it is more difficult to find the evaluation of impact properties after aging. A first approach was studied by [PERSON] et al. [22] in which the energy absorption property has been analyzed related to the effect of humidity and temperature. It was found that the variation of the composite behavior is mostly due to the modification of the Tg of the matrix. This characteristic is due to the strong plasticization that the matrix undergoes with liquids (not necessarily just water) [23]. Furthermore, the presence of dissolved salts and the temperature variation during the cycle tend to create micro-cracks due to the formation of solids: The matrix structure is affected by volume variation in the solid-liquid transition of liquid water to ice or by the salt's segregation from the liquid, due to a lowering of temperature and meniscus. Many researchers have focused on studying the response to the impact of aged composites in the climatic chamber. Its use has allowed to obtain more data on the impact performance of materials thanks to a greater speed of aging and the possibility of varying humidity and temperature at will [24; 25; 26]. [PERSON] et al. [27] stated that there is a change in the type of break, going from delamination to a set of debonding, fiber breakage and multiple cracking of the matrix, as the aging conditions change. [PERSON] et al. [28] evaluated the parameters that influence aging (hygroscopic temperature, the ratio between matrix volume and volume of fiber, thickness, and lay-up) and so, the diffusion in the various directions. They arrived at the conclusion that the lay-up or the thickness do not influence the diffusion as much as the hygroscopic temperature and the presence of voids or the fiber/matrix interface. [PERSON] et al.