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Geometry and damage effects in a composite marine T-joint

机译：复合海洋T型接头的几何形状和损伤效应

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The structural integrity and damage tolerance of typical composite T-joints found in ships constructed from glass fibre reinforced plastic was the subject of this investigation. The effect of the geometry of the T-joint on the strain distribution was investigated using finite element (FE) analysis. The results, reported in this paper, showed that the critical strains were significantly affected by the joint geometry. Results of the FE analysis conducted to investigate the effect of disbonds between the filler and overlaminate are also reported. This showed that particular defects led to large changes in the strains in the T-joint structure, which would encourage disbond progression. The FE model was validated by mechanical tests on a representative T-joint, instrumented with surface strain gauges and displacement transducers, into which a range of defects was progressively introduced.
机译：本研究的主题是在玻璃纤维增​​强塑料建造的船舶中发现的典型复合T型接头的结构完整性和损伤耐受性。使用有限元（FE）分析研究了T型接头的几何形状对应变分布的影响。本文报道的结果表明，关键应变受到接头几何形状的显着影响。还报道了为调查填料和覆膜之间的剥离作用而进行的有限元分析的结果。这表明特定的缺陷导致T形接头结构中的应变发生较大变化，从而促进了脱键的进行。 FE模型通过在具有代表性的T型接头上的机械测试进行了验证，该T型接头配有表面应变仪和位移传感器，在其中逐渐引入了一系列缺陷。

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