An innovative testing technique for assessing the VHCF response of adhesively bonded joints

In the last few years, the use of adhesive joints for structural applications has rapidly increased and adhesives are more often subject to fatigue loads during their in‐service life. In presence of a rapidly varying load, such as a high‐frequency vibration, adhesively bonded joints may undergo fati...

Full description

Saved in:
Bibliographic Details
Published in:Fatigue & fracture of engineering materials & structures 2019-01, Vol.42 (1), p.84-96
Main Authors: Tridello, A., Paolino, D.S., Chiandussi, G., Goglio, L.
Format: Article
Language:English
Subjects:
accelerated test
Adhesion tests
Adhesive bonding
Adhesive joints
bonded butt‐joints
Bonded joints
Butt joints
Compression tests
cyanoacrylate adhesive
Fatigue life
Fatigue tests
High cycle fatigue
Materials fatigue
Service life
Test equipment
Testing time
ultrasonic testing machine
Very High Cycle Fatigue (VHCF)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the last few years, the use of adhesive joints for structural applications has rapidly increased and adhesives are more often subject to fatigue loads during their in‐service life. In presence of a rapidly varying load, such as a high‐frequency vibration, adhesively bonded joints may undergo fatigue lives in the Very High Cycle Fatigue (VHCF) region that are significantly larger than those investigated in usual high‐cycle fatigue tests. The present paper proposes an innovative testing technique for performing accelerated fully reversed tension‐compression VHCF tests on adhesive butt‐joints. The procedure for the design of the adherends is described and then experimentally validated. Ultrasonic VHCF tests are finally carried out on a cyanoacrylate butt‐joint up to 109 cycles: experimental results show that the proposed testing equipment permits an effective assessment of the VHCF response of the adhesive in a limited testing time.
ISSN:8756-758X
1460-2695
DOI:10.1111/ffe.12874