Numerical Modeling of Non-destructive Testing of Composites

• DOI: 10.1016/j.procs.2016.08.272
• Publication Date: 2016-09-08T03:41:27Z
• Authors: Igor Petrov; Alexey Vasyukov; Katerina Beklemys...; Alexey Ermakov; Alena Favorskaya
• Keywords: Delamination; Orthotropic material; Matrix (chemical analysis)

Low-velocity strikes are considered as one of the most dangerous load types for composites, especially in aviation. They do not lead to an immediate destruction a whole detail, but inner damage, provoking delamination between layers or fiber and matrix, lowers material strength may cause during flight. This damage can only be noticed via complex study, which increases exploitation cost. Numerical modeling help interpret results obtained from common portable devices, currently used metals. The modification known methodology reliably composites. In this research, hybrid grid-characteristic method 1-2 order on irregular tetrahedral grid is used. A carbon polymer matrix unidirectional composite modeled homogeneous orthotropic media with single distinguished direction along fiber. As result, one-dimensional graphics, correspond A-scans real were obtained. detailed analysis received data confirms rationality proposed methodoly.