This paper describes the age-related warp of carbon fiber reinforced plastic (CFRP) asymmetric laminated beams due to the viscoelasticity, anisotropy, and nonhomogeneity of CFRP laminates. Asymmetric orthogonally laminated CFRP beams held at a high curing temperature were cooled at various rates with and without constraints against warping during cooling. Furthermore, the warping of CFRP beams with the constraint lifted after cooling was measured during the aging processes. The age-related warping generated under various conditions was predicted using the viscoelastic and thermal properties of the CFRP laminates. The results were compared with measured data. The results were interpreted as follows. The age-related warping of CFRP beams depends strongly on the process conditions of the cooling rate and constraint, and the thermal and physical age-related shrinkage and viscoelasticity in the transverse direction of unidirectional CFRP affect the age-related warp of CFRP beams. Thermoviscoelastic analysis with physical age-related shrinkage is effective for this prediction.

本文描述了由于碳纤维增强塑料（CFRP）层压板的粘弹性，各向异性和非均质性而引起的与年龄相关的翘曲。保持在高固化温度下的不对称正交层压CFRP梁以各种速率进行冷却，并且不受冷却过程中翘曲的限制。此外，在时效过程中，测量了CFRP梁在冷却后解除约束后的翘曲。使用CFRP层压板的粘弹性和热性能可以预测在各种条件下产生的与年龄相关的翘曲。将结果与测量数据进行比较。结果解释如下。CFRP梁与年龄有关的翘曲在很大程度上取决于冷却速率和约束条件的工艺条件，单向碳纤维增强塑料在横向上的热和物理的与年龄相关的收缩和粘弹性会影响碳纤维增强塑料梁的与年龄相关的翘曲。具有与年龄相关的物理收缩的热粘弹性分析对于该预测是有效的。