文章基本信息

标题：The relation of crack propagation behaviour and delamination on Fibre Acrylic Laminates under various cyclic conditions
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作者：Anindito Purnowidodo ; Khairul Anam ; Bagus Maulidika 等
期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2018
卷号：4
期号：12
页码：6-15
DOI：10.15587/1729-4061.2018.139219
语种：English
出版社：PC Technology Center
摘要：The investigation of the crack propagation behaviour associating with the delamination in the interface of the laminate of the fibre acrylic laminates (FALs) composite is carried out by subjecting the composite to cyclic loads. The cyclic load is controlled by the displacement provided by a fatigue testing machine. The cyclic load was carried out with various displacement ratios, R, values, these are, 0, –1, –3, and –5 in which the displacement amplitude was also varied as high as 0.15, 0.20, 0.30 mm, for every value of R. In the present study, the investigation to the crack propagation behaviour is focused on the negative cyclic of R leading to the composite to be cycled under compressive load. The results obtained in the present study shows that in these cases of the lower value of the displacement ratio of –3 and –5, the fatigue life and the crack length of the FALs increase, and the increasing of the displacement amplitude to 0.30 mm causes both the fatigue life and the crack length to be shorter. The delamination propagation rate is higher in the R=0 case than those in the negative value of R. In addition, the lateral contraction of material to outward over the crack region may contribute to the development of the delamination when the ratio of the displacement cycles is negative, and the lateral contraction is higher when the displacement ratio is more negative. Moreover, the delamination may take place in front of the crack tip when the maximum displacement is 0.20 mm or higher, and it causes the crack propagation to be accelerated.
关键词：Crack propagation;delamination;cyclic conditions;Fibre Acrylic Laminates