Determination of residual stress in composite laminates using the incremental hole-drilling method
作者： Olivier Sicot , Xiao-Lu Gong , Abel Cherouat , Jian Lu
关键词: Stress (mechanics) 、 Composite laminates 、 Hole drilling method 、 Residual stress 、 Materials science 、 Finite element method 、 Forming processes 、 Calibration coefficient 、 Composite material
摘要: The cooling conditions used in the forming process of composite materials play an important role creation ofresidual stress. In this study, a new method for measuring residual stress laminates is presented. Three were to produce different levels. Residual stresses [02/902]s and [08] laminate have been measured by incremental holedrilling combined with 3-D finite element modelling. A software which quickly calculates all coefficients each increment was developed. automatic procedure can be calculate calibration coefficient any type oflaminate (ply number, mechanic characteristics,...) whatever number increments their depths. results show that provides access in-depth distribution through thickness good accuracy practicality.
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