In the last few years, the use of adhesive joints for structural applications hasrapidly 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 upto 10^9 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.
An innovative testing technique for assessing the VHCF response of adhesively bonded joints / Tridello, A.; Paolino, D. S.; Chiandussi, G.; Goglio, L.. - In: FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES. - ISSN 8756-758X. - STAMPA. - 42:1(2019), pp. 84-96. [10.1111/ffe.12874]
An innovative testing technique for assessing the VHCF response of adhesively bonded joints
Tridello, A.;Paolino, D. S.;Chiandussi, G.;Goglio, L.
2019
Abstract
In the last few years, the use of adhesive joints for structural applications hasrapidly 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 upto 10^9 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.File | Dimensione | Formato | |
---|---|---|---|
Tridello_et_al-2019-Fatigue_&_Fracture_of_Engineering_Materials_&_Structures.pdf
non disponibili
Descrizione: Articolo "An innovative testing technique for assessing the VHCF response of adhesively bonded joints"
Tipologia:
2a Post-print versione editoriale / Version of Record
Licenza:
Non Pubblico - Accesso privato/ristretto
Dimensione
1.37 MB
Formato
Adobe PDF
|
1.37 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2731894
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo