Determination of Bonding Failures in Transparent Materials with Non-Destructive Methods—Evaluation of Climatically Stressed Glued and Laminated Glass Compounds
As part of an international research project—funded by the European Union—capillary glasses for facades are being developed exploiting storage energy by means of fluids flowing through the capillaries. To meet highest visual demands, acrylate adhesives and EVA films are tested as possible bonding materials for the glass setup. Especially non-destructive methods (visual analysis, analysis of birefringent properties and computed tomographic data) are applied to evaluate failure patterns as well as the long-term behavior considering climatic influences. The experimental investigations are presented after different loading periods, providing information of failure developments. In addition, detailed information and scientific findings on the application of computed tomographic analyses are presented.
References
[1]
Comission, E. (2016) Buildings. https://ec.europa.eu/energy/en/topics/energy-efficiency/buildings
[2]
Heiz, B.P.V., Pan, Z., Lautenschlager, G., Sirtl, C., Kraus, M. and Wondraczek, L. (2017) Smart Windows: Ultrathin Fluidic Laminates for Large-Area Facade Integration and Smart Windows. Advanced Science, 4. http://onlinelibrary.wiley.com/doi/10.1002/advs.201600362/full
[3]
Heiz, B.P.V., Pan, Z., Su, L., Le, S.T. and Wondraczek, L. (2018) A Large-Area Smart Window with Tunable Shading and Solar-Thermal Harvesting Ability Based on Remote Switching of a Magneto-Active Liquid. Advanced Sustainable Systems, 2. http://onlinelibrary.wiley.com/doi/10.1002/adsu.201700140/full
Sirtl, C., Kraus, M., Hadlich, C., Osburg, A. and Wondraczek, L. (2017) Zur Bewertung klimatisch beanspruchter geklebter Glasverbindungen. [For the Evaluation of Climatically Stressed Bonded Glass/Glass Connections.] ce/papers, 1, 254-275. http://onlinelibrary.wiley.com/doi/10.1002/cepa.26/full
[8]
Folienwerk Wolfen GmbH (2018) The Clever Laminating Film. http://www.evguard.net/de/
[9]
DELO Industrie Klebstoffe (2014) Delo Photobond GB 310. https://www.delo-adhesives.com/fileadmin/datasheet/DELO%20PHOTOBOND_GB310_%28TIDB-GB%29.pdf
[10]
Folienwerk Wolfen GmbH (2017) Technical Data Sheet. http://www.folienwerk-wolfen.de/fileadmin/upload/downloads/Glass-lamination_films/2017-08_Technical-Data_evguard_EN.pdf
[11]
DIN Deutsches Institut für Normung e.V. (2009) Klebstoffe—Bestimmung der Zugscherfestigkeit von überlappungsklebungen (DIN EN 1465:2009-07) [Adhesives—Determination of Tensile Lap-Shear Strength on Bonded Assemblies]. Beuth Verlag GmbH, Berlin.
[12]
DIN Deutsches Institut für Normung e.V. (2011) Strukturklebstoffe—Bestimmung des Scherverhaltens struktureller Klebungen (DIN EN 14869:2011-07) [Structural Adhesives—Determination of Shear Behavior of Structural Bonds]. Beuth Verlag GmbH, Berlin.
[13]
DELO Industrie Klebstoffe (2014) DELO Norm 5—Bestimmung von Druckscherfestigkeiten [DELO Guideline 5—Determination of Compressive Shear Strength]. DELO Industrie Klebstoffe, Windach.
[14]
DIN Deutsches Institut für Normung e.V. (2012) Begriffe auf dem Gebiet der Alterung von Materialien—Polymere Werkstoffe (DIN 50035:2012-09) [Terms and Definitions Used on Ageing of Materials—Polymeric Materials]. Beuth Verlag GmbH, Berlin.
[15]
Ehrenstein, G.W. and Pongratz, S. (2007) Bestandigkeit von Kunststoffen [Resistance of Plastics]. Carl Hanser Fachverlag, München. https://doi.org/10.3139/9783446411494
[16]
DIN Deutsches Institut für Normung e.V. (2004) Klebstoffe—Auswahlrichtlinien für Labor-und Alterungsbedingungen zur Prüfung von Klebverbindungen (DIN EN ISO 9142:2003) [Adhesives—Guide to the Selection of Standard Laboratory Ageing Conditions for Testing Bonded Joints]. Beuth Verlag GmbH, Berlin.
[17]
DIN Deutsches Institut für Normung e.V. (2013) Kunststoffe—Künstliches Bestrahlen oder Gewittern in Gerate—Teil 2: Xenonbogenlampen (DIN EN ISO 4892-2:2013-06) [Plastics—Methods of Exposure to Laboratory Light Sources—Part 2: Xenon-arc lamps]. Beuth Verlag GmbH, Berlin.
[18]
DIN Deutsches Institut für Normung e.V. (1992) Alterung von Kfz-Bauteilen in Sonnensimulationsanlagen (DIN 75220:1992-11) [Ageing of Automotive Components in Solar Simulation Units]. Beuth Verlag GmbH, Berlin.
[19]
Bundesministerium für Verkehr, Bau und Stadtentwicklung (1998) Bekanntmachung der Leitlinie für die Europaische Technische Zulassung für geklebte Glaskonstruktionen—Teil 1: Gestützte und ungestützte Systeme (ETAG 002) [Structural Sealant Glazing Systems—Part 1: Supported and Unsupported Systems]. Beuth Verlag GmbH, Berlin.
[20]
Katte, H. (2008) Bildgebende Messung der Spannungsdoppelbrechung in optischen Materialien und Komponenten [Imaging Measurement of Stress Birefringence in Optical Materials and Components]. Photonik, 05/2008, 60-63. http://www.ilis.de/de/pdf/photonik_2008_05_60.pdf
[21]
Biermann, H. and Krüger, L. (2015) Moderne Methoden der Werkstoffprüfung [Modern Methods for Material Testing]. Wiley-VCH, Weinheim.