Torsional shear strength of steel joined with high performance aerospace adhesives at cryogenic and elevated temperatures

Gurdial Blugan; Gustavo Mata-Osoro; Simon Fecht; Jolanta Janczak-Rusch; Jakob Kuebler

doi:10.1371/journal.pone.0206981

Torsional shear strength of steel joined with high performance aerospace adhesives at cryogenic and elevated temperatures

PLoS One. 2018 Nov 7;13(11):e0206981. doi: 10.1371/journal.pone.0206981. eCollection 2018.

Authors

Gurdial Blugan¹, Gustavo Mata-Osoro¹, Simon Fecht², Jolanta Janczak-Rusch³, Jakob Kuebler¹

Affiliations

¹ Laboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland.
² Department of Adhesive Bonding Technology, Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Bremen, Germany.
³ Laboratory for Joining Technologies and Corrosion, Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland.

Abstract

Pure torsional shear tests of joints glued with two different aerospace grade adhesives were performed using a specifically designed and constructed torsional shear test equipment. The developed test equipment allows for measuring of pure torsional shear strength under cryogenic and at elevated temperature conditions. The adhesives Hysol EA 9321 and 3M Scotch-Weld EC-9323-2 B/A were used to join steel torsional shear test specimens. Torsional shear tests were performed from -180°C to 150°C. In addition torsional shear fatigue tests were also performed at various loads and the effect of cryogenic aging (cyclic cooling and warming) on the torsional strength of the joints was investigated. The results showed that both sets of adhesive joints achieved three times higher torsional shear strength at -180°C compared to room temperature.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adhesives / chemistry*
Elastic Modulus
Materials Testing
Shear Strength
Steel / chemistry*
Temperature

Substances

Adhesives
Steel

Grants and funding

The research leading to these results has received funding from the European Community’s 7th Frame-work Programme FP7 2007-2013 under the grant agreement No. 609188. ADMACOM (Advanced Manufacturing Routes for Metal/Composite Components for Aerospace). G.B., G. O.-M., J. J.-R. and J.K. all received funding. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.