TY - CONF A1 - Erhard, Anton A1 - Völzke, Holger A1 - Droste, Bernhard A1 - Wolff, Dietmar A1 - Wille, Frank T1 - Nuclear power plant waste management strategy in Germany N2 - The shut-down of eight nuclear power plants and the phase out of the nuclear energy genera� tion in Germany, due to a decision of the German government after the Fukushima accident, has rapidly forced the need for transportation and storage of spent nuclear fuel (SNF) from shut-down reactors in this country. In accordance with the present strategy in Germany, which is characterized by searching for appropriate final repository areas, only the dry interim stor� age facilities are available for storage nuclear waste of the decommissioned plants as well as the operating plants. Therefore, the transportation and the storage casks must be available for both types of light water reactors. But for the time being this is the bottleneck. Unfortunately the prognoses are neglecting the fact, that such a high number of casks are needed in a very short space of time. This requires the acceleration of formal activeness in relation to the li� censes but also an increase of the production. In the meanwhile to get this process started, the only possibility is the storage in the pools at the plant site. Anyway, for the time being, this is one of the problems for dismantling the eight plants which have been shut down due to the decision of the Government, which is now fixed in the last amended German Atomic Energy Act dated 24th of February 2012. Starting to dismantle in the radioactive regions of the plants requires empty pools. For emptying the pools of damaged SNF special procedures regarding the transportation and storage are necessary. The transportation of damaged SNF requires special casks or at least special procedures and therefore also a special licenses. This paper describes the challenge for the management in transportation and storage of SNF in Germany after the shut-down of the nuclear power plants by reason of the Fukushima acci� dent. T2 - PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials CY - San Francisco, CA, USA DA - 18.08.2013 PY - 2013 SP - 1 EP - 11 PB - Omnipress AN - OPUS4-30135 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gaal, Mate A1 - Bovtun, Viktor A1 - Stark, Wolfgang A1 - Erhard, Anton A1 - Yakymenko, Y. A1 - Kreutzbruck, Marc T1 - Viscoelastic properties of cellular polypropylene ferroelectrets N2 - Viscoelastic properties of cellular polypropylene ferroelectrets (PP FEs) were studied at low frequencies (0.3–33 Hz) by dynamic mechanical analysis and at high frequencies (250 kHz) by laser Doppler vibrometry. Relaxation behavior of the in-plane Young’s modulus (Y´ 11~1500 MPa at room temperature) was observed and attributed to the viscoelastic response of polypropylene matrix. The out-of-plane Young’s modulus is very small (Y´33≈0.1 MPa) at low frequencies, frequency- and stress-dependent, evidencing nonlinear viscoelastic response of PP FEs. The highfrequency mechanical response of PP FEs is shown to be linear viscoelastic with Y´33≈0.8 MPa. It is described by thickness vibration mode and modeled as a damped harmonic oscillator with one degree of freedom. Frequency dependence of Y*33 in the large dynamic strain regime is described by the broad Cole-Cole relaxation with a mean frequency in kHz range attributed to the Dynamics of the air flow between partially closed air-filled voids in PP FEs. Switching-off the relaxation contribution causes dynamic crossover from the nonlinear viscoelastic regime at low frequencies to the linear viscoelastic regime at high frequencies. In the small strain regime, contribution of the air flow seems to be insignificant and the power-law response, attributed to the mechanics of polypropylene cell walls and closed air voids, dominates in a broad frequency range. Mechanical Relaxation caused by the air flow mechanism takes place in the sound and ultrasound frequency range (10 Hz–1MHz) and, therefore, should be taken into account in ultrasonic applications of the PP FEs deal with strong exciting or receiving signals. KW - Viscoelastic KW - Cellular polypropylene KW - Ferroelectret PY - 2016 DO - https://doi.org/10.1063/1.4944798 SN - 0021-8979 SN - 1089-7550 SN - 1520-8850 VL - 119 SP - Article Number: 125101 PB - AIP Publishing AN - OPUS4-35956 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erhard, Anton T1 - Defect Sizing using Ultrasonic Phased Array Techniques and SAFT T2 - 11th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components CY - Jeju Island, South Korea DA - 2015-05-19 PY - 2015 AN - OPUS4-33911 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wüstenberg, Hermann A1 - Erhard, Anton T1 - Anwendung spezieller Ultraschall-Prüfköpfe unter besonderer Beachtung von Kriechwellen PY - 1981 SP - 1 EP - 22 PB - Koninklijk Instituut Van Ingenieurs (KIVI) CY - Twente AN - OPUS4-33958 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Erhard, Anton A1 - Wüstenberg, Hermann A1 - Schulz, Eduard A1 - Möhrle, Walter T1 - The inservice inspection of austenitic pipe welds, with special emphasis on the sizing of near surface defects by acoustic holography T2 - 6th ASM International Conference on NDE in the Nuclear Industry CY - Zurich, Switzerland DA - 1983-11-28 PY - 1985 SN - 0148-7191 SN - 0096-5170 IS - 8310-013 SP - 249 EP - 255 PB - Society of Automotive Engineers CY - Warrendale, Pa. AN - OPUS4-34207 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erhard, Anton A1 - Wüstenberg, Hermann A1 - Schulz, Eduard A1 - Möckel, U. T1 - Ultrasonic flaw detection and sizing methods for cracks in the nozzle corner area at boiling water reactor vessels T2 - 7th International Conference on NDE in the nuclear industry CY - Grenoble, France DA - 1985-01-28 PY - 1985 SP - 55 EP - 58 CY - Grenoble AN - OPUS4-34209 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erhard, Anton A1 - Wüstenberg, Hermann A1 - Schenk, Gottfried A1 - Möhrle, Walter T1 - Calculation and construction of phased array-UT probes T2 - 3rd Japanese-German joint seminar on structural strength and NDE problems in nuclear engineering CY - Stuttgart, Germany DA - 1985-08-29 PY - 1985 SP - 1 EP - 22 AN - OPUS4-34210 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jaffrey, D. A1 - Wüstenberg, Hermann A1 - Bertus, Norbert A1 - Ludwig, Bernd A1 - Erhard, Anton T1 - Improved detection of near-surface defects with new ultrasonic probes and signal analysis techniques T2 - Fifth international conference on pressure vessel technology CY - San Francisco, CA, USA DA - 1984-09-09 PY - 1984 VL - 2 SP - 693 EP - 702 PB - ASME CY - New York AN - OPUS4-34231 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Wüstenberg, Hermann A1 - Erhard, Anton ED - Dorn, L. T1 - Neuere Ultraschallprüfverfahren für die Fehlerklassierung und -analyse and Schweißnähten PY - 1985 SN - 3-88508-962-9 N1 - Serientitel: Kontakt & Studium – Series title: Kontakt & Studium IS - 145 SP - 136 EP - 158 PB - Expert-Verl. CY - Sindelfingen AN - OPUS4-34234 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wüstenberg, Hermann A1 - Ludwig, Bernd A1 - Bertus, Norbert A1 - Erhard, Anton A1 - Jaffrey, D. T1 - Time displacement pictures with multi-mode probes from circumferential welds PY - 1985 SN - 0148-7191 SN - 0096-5170 IS - 8310-014 SP - 173 EP - 180 PB - Society of Automotive Engineers CY - Warrendale, Pa. AN - OPUS4-34238 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -