Static and fatigue behaviour of room temperature vulcanising silicone adhesives for high temperature aerospace applications

• Type: Article in International Scientific Journal
• Date: 2010

Authors

M. D. Banea (Author) FEUP; L. F. M. da Silva (Author) FEUP

Journal

Title: Materialwissenschaft und Werkstofftechnik

Vol. 41 No. 5

Pages: 325-335

ISSN: 0933-5137

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 27 Citations

Scopus - 43 Citations

INSPEC

Other information

Authenticus ID: P-003-74X

DOI: 10.1002/mawe.201000605

Abstract (EN): This paper focuses on the mechanical properties of room temperature vulcanising (RTV) silicone adhesives for aerospace applications. In view of the very limited amount of published data on this subject, we analyzed the performances of two RN silicone rubber adhesives through adhesive joint tests. The standard Thick Adherend Shear Test (TAST) was performed in order to measure the shear properties of the adhesives. Single lap joints (SLJs) were fabricated and tested to assess the adhesive performance in a joint. The influence of temperature on the lap-shear strength of the adhesives was investigated. It is shown that the lap-shear strength of both adhesives decreased with increasing of temperature. The effect of bondline thickness and overlap length on the lap-shear strength of the adhesives was also studied. The reduction of failure load with an increase of the bondline thickness is a very common situation when dealing with structural adhesives. However, for the tested RN silicone adhesives the failure loads increased as the bondline was made thicker. Also, the failure loads of RN silicone adhesive joints increased almost proportionally with increasing the overlap length. Fatigue tests were also performed and show a low dispersion of the results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11