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Experimental characterisation of textile compaction response: A benchmark exercise
Composites Part A: Applied Science and Manufacturing ( IF 8.1 ) Pub Date : 2020-12-14 , DOI: 10.1016/j.compositesa.2020.106243
A.X.H. Yong , A. Aktas , D. May , A. Endruweit , S.V. Lomov , S. Advani , P. Hubert , S.G. Abaimov , D. Abliz , I. Akhatov , M.A. Ali , S. Allaoui , T. Allen , D.C. Berg , S. Bickerton , B. Caglar , P. Causse , A. Chiminelli , S. Comas-Cardona , M. Danzi , J. Dittmann , C. Dransfeld , P. Ermanni , E. Fauster , A. George , J. Gillibert , Q. Govignon , R. Graupner , V. Grishaev , A. Guilloux , M.A. Kabachi , A. Keller , K. Kind , D. Large , M. Laspalas , O.V. Lebedev , M. Lizaranzu , A.C. Long , C. López , K. Masania , V. Michaud , P. Middendorf , P. Mitschang , S. van Oosterom , R. Schubnel , N. Sharp , P. Sousa , F. Trochu , R. Umer , J. Valette , J.H. Wang

This paper reports the results of an international benchmark exercise on the measurement of fibre bed compaction behaviour. The aim was to identify aspects of the test method critical to obtain reliable results and to arrive at a recommended test procedure for fibre bed compaction measurements. A glass fibre 2/2 twill weave and a biaxial (±45°) glass fibre non-crimp fabric (NCF) were tested in dry and wet conditions. All participants used the same testing procedure but were allowed to use the testing frame, the fixture and sample geometry of their choice. The results showed a large scatter in the maximum compaction stress between participants at the given target thickness, with coefficients of variation ranging from 38% to 58%. Statistical analysis of data indicated that wetting of the specimen significantly affected the scatter in results for the woven fabric, but not for the NCF. This is related to the fibre mobility in the architectures in both fabrics. As isolating the effect of other test parameters on the results was not possible, no statistically significant effect of other test parameters could be proven. The high sensitivity of the recorded compaction pressure near the minimum specimen thickness to changes in specimen thickness suggests that small uncertainties in thickness can result in large variations in the maximum value of the compaction stress. Hence, it is suspected that the thickness measurement technique used may have an effect on the scatter.



中文翻译:

纺织品压实响应的实验表征:基准测试

本文报告了有关纤维床密实性测量的国际基准测试的结果。目的是确定测试方法的各个方面,这些方面对于获得可靠的结果以及为纤维床密实度测量提供推荐的测试程序至关重要。在干燥和潮湿条件下测试了2/2斜纹玻璃纤维编织法和双轴(±45°)玻璃纤维非卷曲织物(NCF)。所有参与者都使用相同的测试程序,但被允许使用他们选择的测试框架,夹具和样品几何形状。结果表明,在给定目标厚度下,参与者之间的最大压实应力有较大的分散,变异系数范围为38%至58%。数据的统计分析表明,试样的润湿显着影响了机织织物结果的分散性,但对NCF却没有影响。这与两种结构的架构中的光纤移动性有关。由于不可能隔离其他测试参数对结果的影响,因此无法证明其他测试参数具有统计学上的显着影响。记录的压实压力在最小样品厚度附近对样品厚度变化的高度敏感性表明,厚度的较小不确定性可导致压实应力最大值的较大变化。因此,怀疑所使用的厚度测量技术可能对散射有影响。由于不可能隔离其他测试参数对结果的影响,因此无法证明其他测试参数具有统计学上的显着影响。记录的压实压力在最小样品厚度附近对样品厚度变化的高度敏感性表明,厚度的较小不确定性可导致压实应力最大值的较大变化。因此,怀疑所使用的厚度测量技术可能对散射有影响。由于不可能隔离其他测试参数对结果的影响,因此无法证明其他测试参数具有统计学上的显着影响。记录的压实压力在最小样品厚度附近对样品厚度变化的高度敏感性表明,厚度的较小不确定性可导致压实应力最大值的较大变化。因此,怀疑所使用的厚度测量技术可能对散射有影响。记录的压实压力在最小样品厚度附近对样品厚度变化的高度敏感性表明,厚度的较小不确定性可导致压实应力最大值的较大变化。因此,怀疑所使用的厚度测量技术可能对散射有影响。记录的压实压力在最小样品厚度附近对样品厚度变化的高度敏感性表明,厚度的较小不确定性可导致压实应力最大值的较大变化。因此,怀疑所使用的厚度测量技术可能对散射有影响。

更新日期:2020-12-26
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