41952 Nondestructive evaluation of adhesively bonded joints using acousto-ultrasonics : Tanary, S.; Fahr, A.; Haddad, Y. Journal of Acoustic Emission, Vol. 8, Nos. 1–2, pp. 5314–5316 (Jan. – Jun. 1989). Special Supplement - Extended Summaries of Papers to be presented at the World Meeting on Acoustic Emission, Charlotte, North Carolina, USA, 20–23 Mar. 1989

Abstract

This paper describes a review of programmatic and experimental activities as well as study work of DFVLR-Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt. Intending to achieve a consensus among those concerned with energy in the Federal Republic of Germany, a programmatic paper entitled “Hydrogen as a secondary energy carrier” was presented in 1981 by DFVLR as a proposal for a research and development programme. The programme outlines the objectives and indicates the technological problems of introducing hydrogen into the energy scenario of a national economy; it recommends appropriate research and development activities as well as study and demonstration work. The programme accepts the fact that non-fossil hydrogen, produced from water, will not be a competitive secondary energy carrier within the next few decades. It is, however, important to open up the secondary energy carrier options which are compatible with any of the development paths and thus to maximise maneuvrability in future energy policies. A review of this programme is given, including some results of DFVLR research activities and the more important promotional steps already taken. Finally, a suggestion is made for future research, development and demonstration activities in the international arena.