کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1467100 | 1509928 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Meso-scale strain mapping in UD woven composites Meso-scale strain mapping in UD woven composites](/preview/png/1467100.png)
Unidirectional (UD) woven laminates have complex tow geometry due to unbalanced weave architecture. Warp tows are held together by fine weft. Unit cell models for textile composites found in the literature are based on balanced weaves with identical warp and weft specifications. In this paper, unit cell geometry of unbalanced UD weaves has been considered. Unbalanced laminates have complex tow geometry with in-plane tow waviness and a significant overlap between adjacent tows. Main objective of this work is to measure full-field strain distribution at meso-scale or unit cell level and compare the results with FE analysis. Raman spectroscopy is a powerful technique for in situ strain measurement. A UD woven composite laminate with Kevlar fibres is used in this study, as Kevlar fibres exhibit clear Raman band shifts under strain. Influence of in-plane tow waviness on local strain gradients has been demonstrated.
Journal: Composites Part A: Applied Science and Manufacturing - Volume 40, Issue 12, December 2009, Pages 1838–1845