Experimental investigation of an alternative approach to temporarily repair Nomex honeycomb sandwich structures in aerospace applications

Younes Djemaoune; Branimir Krstic; Stefan RasicDaniel RadulovicMarjan Dodic

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Experimental investigation of an alternative approach to temporarily repair Nomex honeycomb sandwich structures in aerospace applications

机译：Experimental investigation of an alternative approach to temporarily repair Nomex honeycomb sandwich structures in aerospace applications

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摘要

In this study, the effectiveness of an alternative approach to temporarily repair an open-hole damaged Nomex honeycomb sandwich structure is experimentally investigated. The repair process consists of a resin-infused carbon fabric wet layup patch adhesively bonded to the facesheets and Airex structural foam used as a core replacement plug. The specimens of intact, damaged and repaired Nomex honeycomb sandwich panels are subjected to the quasi-static three-point bending test. The panel's flexural performances are determined by analyzing the obtained load-displacement responses. The effectiveness of the proposed repair technique is evaluated by comparing the responses of the repaired panels with the ones obtained from the intact and damaged panel specimens. The comparison is effectuated in terms of mean values of flexural elastic modulus, peak force, energy absorption, and specific energy absorption. In addition, the observed failure modes of the different panel configurations are pointed out and discussed.

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《Proceedings of the Institution of Mechanical Engineers, Part L. Journal of Materials: Design and Application》 |2023年第5期|1215-1228|共14页
作者
Younes Djemaoune; Branimir Krstic; Stefan RasicDaniel RadulovicMarjan Dodic;
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作者单位

Department of Aerospace Engineering, University of Defence in Belgrade;

Department of Aerospace Engineering, University of Defence in Belgrade||Department of Aerospace Engineering, Military Technical Institute in Belgrade;

Department of Anatomical Pathology, Monash Health;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Sandwich panel; Nomex honeycomb; carbon/epoxy prepreg; UAV repair; damage degradation; repaired honeycomb sandwich structure; airex structural foam; scarf repair; three-point bending test; flexural performances;

Experimental investigation of an alternative approach to temporarily repair Nomex honeycomb sandwich structures in aerospace applications

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