The electrification of transport implies a strong increase in power and voltage in on-board networks (particularly in aeronautics). The risk of damages due to arcing faults is thus increased. The arc fault is unavoidable, so it must be detected. The arc detection involves a minimum delay during which the damages generated by the arc must be minimized. The objective of the DESMARC project is to propose a passive protection of embedded systems, based on polymer materials, which would mitigate the consequences of the arc on its environment. This protection consists in a layer of materials deposited on the usual cables whose degradation products by the arc would modify the characteristics of the arc and reduce the consequences. For that, the project focuses on the defects at the level of cables. Several challenges are identified. It is necessary to identify the key parameters between the nature of the polymers that are stable at cable operating temperatures, the nature of their degradation products and the behavior of the arc in their presence. To reach these objectives we propose to model the arc-material interaction and to develop an approach (test/selection criteria) to ensure the beneficial effects of the proposed material. It will be necessary to define a validation process and success/failure criteria based on existing materials and standards and the expertise of the partners. In this project, two laboratories (GeePs and UMET) and two industrial companies (Protavic and Safran) have complementary roles in interaction. UMET and Protavic are developing and characterizing functionalized polymeric materials resistant to extreme conditions. GeePS and UMET characterize the materials during and after the arc in terms of arc resistance. Safran, GeePS and UMET are modeling the arc/material interaction and degradation modes (validation will be done by experiment) to propose material design options.