DETERMINATION OF THE STRUCTURE OF THE SELF-INTERSTITIAL ATOM IN SOLID ARGON FROM DIFFUSE X-RAY SCATTERINGBALZER R; KROGGEL O; SPALT H et al.1980; J. PHYS. C: SOLID STATE PHYS.; ISSN 0022-3719; GBR; DA. 1980; VOL. 13; NO 34; PP. 6349-6358; BIBL. 17 REF.Article

Untersuchung des Verankerungsbereichs von Hinerschnitt-Dübeln mit Röntgendurch strahlung = Examen de la portée d'ancrage de vis couplées et ancrées grâce à la radiographie = Examination of the anchoring range of undercut screw anchors by means of radiographyKROGGEL, O; STEIN, H. D.Der Stahlbau. 1991, Vol 60, Num 2, pp 41-42, issn 0038-9145, 2 p.Article

Die zerstörungsfreie Prüfung von Betonbauteilen mit dem Ultra-Schall-Impuls-Echo-Verfahren = Non-Destructive Testing of Concrete Structures Utilising Ultrasonic Impulse. Echo-Technique = Contrôle non destructif d'éléments en béton armé, par méthode d'ultrasons à impulsions d'échoGRÜBL, P; KROGGEL, O; JANSOHN, R et al.Beton- und Stahlbetonbau. 1996, Num 12, pp 297-303, issn 0005-9900Article

A new method of base isolation against earthquake damage using natural materialSHENGWEI TANG; KÖNIG, G; KROGGEL, O et al.International journal of pressure vessels and piping. 1991, Vol 47, Num 2, pp 207-215, issn 0308-0161Article

Improved ultrasonic wave reflection technique to monitor the setting of cement-based materialsÖZTÜRK, T; KROGGEL, O; GRÜBL, P et al.NDT & E international. 2006, Vol 39, Num 4, pp 258-263, issn 0963-8695, 6 p.Article

Comparison of pulse-echo methods for testing concreteKRAUSE, M; BÄRMANN, M; SCHMITZ, V et al.NDT & E international. 1997, Vol 30, Num 4, pp 195-204, issn 0963-8695Conference Paper

DGZfP Merkblatt B11 ― A Guideline Describing Fundamentals and Applications of the Impact-Echo MethodSCHICKERT, M; NEISECKE, J; WILLMES, M et al.Actes des journées scientifiques du LCPC. 2009, pp 807-813, issn 1628-4704, isbn 978-2-7208-2542-5, 1Vol, 7 p.Conference Paper