A rapid durability test method for adhesives

Knox, E.M; Cowling, M.J.

doi:10.1016/s0143-7496(99)00045-7

Cited by 33 publications

(17 citation statements)

References 6 publications

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“…Recently, many studies have focused on improving the durability of grit blasting by using silane coupling agents, for example [105,[112][113][114][115][116][117]. Silanes improve…”

Section: Effect Of Surface Treatment In the Presence Of Moisturementioning

confidence: 99%

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Environmental durability of adhesively bonded FRP/steel joints in civil engineering applications: State of the art

Heshmati

Haghani

Al‐Emrani

2015

Composites Part B: Engineering

194

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“…Recently, many studies have focused on improving the durability of grit blasting by using silane coupling agents, for example [105,[112][113][114][115][116][117]. Silanes improve…”

Section: Effect Of Surface Treatment In the Presence Of Moisturementioning

confidence: 99%

“…Although the effectiveness of silane is well established, it does not necessarily increase the interface corrosion resistance [117]. For this purpose, chemical conversion coatings [118][119][120][121][122] have been widely adapted for steels.…”

Section: Effect Of Surface Treatment In the Presence Of Moisturementioning

confidence: 99%

Environmental durability of adhesively bonded FRP/steel joints in civil engineering applications: State of the art

Heshmati

Haghani

Al‐Emrani

2015

Composites Part B: Engineering

194

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“…Stress of the adhesive during diffusion can cause a more rapid absorption. [7][8][9][10][11][12]. Moisture diffusion causes a change of adhesive mechanical properties and the failure stress of adhesives reducing with increasing moisture [2,3,13,14].…”

Section: Introductionmentioning

confidence: 99%

Simultaneously Effect of Envinronment and Sustained Load on the Degradation of Aluminium Bonded Joint

Snr¹,

Ad²

2013

IJMSA

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Abstract:Bonded aluminium single lap joints have been exposed to a fully reversed ageing environment (immersion followed by withdrawal both at 50 o C) in both loaded and unloaded conditions with time dependent. Monitoring of these specimens and testing at key points on this reversed ageing environment has led to the stress rupture and moisture dependence of joint mechanical response included creep effect. Moisture cycling and stress influenced the tensile strength of the joints, with some apparent irreversible degradation. However, the effect of environmental exposure, time exposure, pre-treatment and constant stress was significant for the single lap joints damage.

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“…Although the subject has been investigated since long, it is still extensively studied at present [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Moisture degradation of open-faced single lap joints

Goglio

Rezaei

Rossetto

2012

Journal of Adhesion Science and Technology

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To obtain experimental data in short time on the degradation of adhesives exposed to moisture, a valuable technique is represented using the open-face configuration. With this technique, a layer of adhesive is first applied on one adherend and exposed to the humid environment; then, the second adherend is bonded and the joint can now undergo mechanical testing. Apart from the acceleration of moisture uptake which is obtained due to the larger area exposed, a further advantage is the uniformity of degradation. A further acceleration can be obtained by adding a hygroscopic contaminant at the adhesive/adherend interface, which speeds up moisture uptake and accentuates the interfacial nature of the failure. The main aim of this work was to evaluate the decay of the mechanical strength in the absence or presence of a contaminating agent. The specimens studied were single lap joints, tested under static shear loading. Two sets of specimens were considered; in the first set, the adhesive was applied in standard way and in the second set, the adhesive/adherend interface was contaminated with droplets of CaCl 2 aqueous solution. Both sets were subjected to humid and warm environment (100% relative humidity, 50°C). After the desired exposure times in the range 1-5 weeks, groups of specimens were dried and bonding of the second adherend was carried out. Then, mechanical testing was performed; the fractured surfaces were examined by scanning electron microscopy. The results show that before degradation the failure type is cohesive, but it changes to interfacial failure as the degradation proceeds. Uncontaminated specimens exhibit gradual degradation during the exposure time; contaminated specimens achieve almost half of the degradation in less than one week; after that, the process continues at lower speed and at the end of the observed period both methods show similar values of failure loads. Additional tests were carried out to assess the moisture absorption in the adhesive layer and relate it to the exposure time.

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A rapid durability test method for adhesives

Cited by 33 publications

References 6 publications

Environmental durability of adhesively bonded FRP/steel joints in civil engineering applications: State of the art

Environmental durability of adhesively bonded FRP/steel joints in civil engineering applications: State of the art

Simultaneously Effect of Envinronment and Sustained Load on the Degradation of Aluminium Bonded Joint

Moisture degradation of open-faced single lap joints

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