摘要 :
Sandwich structures are state of the art for construction of lightweight structures with high mechanical load capacity. Beside established core materials like foams, honeycombs or wood, napcore material is an interesting option wh...
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Sandwich structures are state of the art for construction of lightweight structures with high mechanical load capacity. Beside established core materials like foams, honeycombs or wood, napcore material is an interesting option when economic production costs or the possibility to integrate extra functionality are criteria in addition to specified mechanical values. Napcore material is made from a two-dimensional resin-impregnated knitted fabric that is shaped into a three-dimensional nap structure and stabilized by the cured resin matrix. In this paper the mechanical behavior under low velocity impact loads of sandwich structures made with napcores from aramide textile and phenolic resin is investigated and compared with components containing honeycomb cores.
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摘要 :
This paper highlights the results of the TN-ITS GO project focusing on the deployment and evaluation of data sharing services, set-up by road authorities in 13 EU countries, making (changes of) road attributes on the TEN-T network...
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This paper highlights the results of the TN-ITS GO project focusing on the deployment and evaluation of data sharing services, set-up by road authorities in 13 EU countries, making (changes of) road attributes on the TEN-T network available and accessible to map providers in a standardized way (CEN TS 17268). We present the types of data exposed, the choice for Open Data licenses, the mobility data chain, the relation to mobility data standardization initiatives and the context of EU directives. The project showed that the deployment of TN-ITS services is feasible, organizationally and technically, that multi-stakeholder cooperation and a supporting platform is needed. Some of the key challenges relate to the unavailability of data sources/feeds and processes beyond the TEN-T, authorities in some EU countries not taking action, compliance to technical specifications (TS) for data exchange, the level of trust map makers as data users can attribute to the provided changes. The NAPCORE project and revised ITS Directive will address these challenges.
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