Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens

K B Katnam; A J Comer; W F Stanley; M Buggy; T M Young

doi:10.1016/j.ijadhadh.2012.01.007

Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens

K B Katnam, A J Comer, W F Stanley, M Buggy, T M Young

Research output: Contribution to journal › Article › peer-review

Abstract

Toughened epoxy adhesives are frequently used to bond metals and polymer-matrix composite materials in many structural applications. The mechanical properties of adhesives are often characterised by testing either bulk adhesive specimens or bonded joints (i.e. in-situ form). In this paper, cylindrical bulk specimens with circumferential notches were manufactured and tested to investigate the tensile behaviour of an epoxy paste adhesive toughened with hollow glass microspheres. Bulk specimens were manufactured from the paste adhesive using injection moulding. Tensile tests were conducted for strain-rate and stress triaxiality effects by varying displacement rates and notch radii, respectively. Fracture surfaces were examined using optical and scanning electron microscopy to identify failure mechanisms. The results obtained from the toughened paste adhesive indicate that strain-rate and stress triaxiality influence its tensile fracture behaviour. (C) 2012 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	3-10
Number of pages	8
Journal	International Journal of Adhesion and Adhesives
Volume	37
Issue number	0
DOIs	https://doi.org/10.1016/j.ijadhadh.2012.01.007
Publication status	Published - 2012

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10.1016/j.ijadhadh.2012.01.007

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title = "Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens",

abstract = "Toughened epoxy adhesives are frequently used to bond metals and polymer-matrix composite materials in many structural applications. The mechanical properties of adhesives are often characterised by testing either bulk adhesive specimens or bonded joints (i.e. in-situ form). In this paper, cylindrical bulk specimens with circumferential notches were manufactured and tested to investigate the tensile behaviour of an epoxy paste adhesive toughened with hollow glass microspheres. Bulk specimens were manufactured from the paste adhesive using injection moulding. Tensile tests were conducted for strain-rate and stress triaxiality effects by varying displacement rates and notch radii, respectively. Fracture surfaces were examined using optical and scanning electron microscopy to identify failure mechanisms. The results obtained from the toughened paste adhesive indicate that strain-rate and stress triaxiality influence its tensile fracture behaviour. (C) 2012 Elsevier Ltd. All rights reserved.",

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note = "Times Cited: 3 Si 1st International Conference on Structural Adhesive Bonding (AB) Jul 07-08, 2011 Porto, PORTUGAL",

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T1 - Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens

AU - Katnam, K B

AU - Comer, A J

AU - Stanley, W F

AU - Buggy, M

AU - Young, T M

N1 - Times Cited: 3 Si 1st International Conference on Structural Adhesive Bonding (AB) Jul 07-08, 2011 Porto, PORTUGAL

PY - 2012

Y1 - 2012

N2 - Toughened epoxy adhesives are frequently used to bond metals and polymer-matrix composite materials in many structural applications. The mechanical properties of adhesives are often characterised by testing either bulk adhesive specimens or bonded joints (i.e. in-situ form). In this paper, cylindrical bulk specimens with circumferential notches were manufactured and tested to investigate the tensile behaviour of an epoxy paste adhesive toughened with hollow glass microspheres. Bulk specimens were manufactured from the paste adhesive using injection moulding. Tensile tests were conducted for strain-rate and stress triaxiality effects by varying displacement rates and notch radii, respectively. Fracture surfaces were examined using optical and scanning electron microscopy to identify failure mechanisms. The results obtained from the toughened paste adhesive indicate that strain-rate and stress triaxiality influence its tensile fracture behaviour. (C) 2012 Elsevier Ltd. All rights reserved.

AB - Toughened epoxy adhesives are frequently used to bond metals and polymer-matrix composite materials in many structural applications. The mechanical properties of adhesives are often characterised by testing either bulk adhesive specimens or bonded joints (i.e. in-situ form). In this paper, cylindrical bulk specimens with circumferential notches were manufactured and tested to investigate the tensile behaviour of an epoxy paste adhesive toughened with hollow glass microspheres. Bulk specimens were manufactured from the paste adhesive using injection moulding. Tensile tests were conducted for strain-rate and stress triaxiality effects by varying displacement rates and notch radii, respectively. Fracture surfaces were examined using optical and scanning electron microscopy to identify failure mechanisms. The results obtained from the toughened paste adhesive indicate that strain-rate and stress triaxiality influence its tensile fracture behaviour. (C) 2012 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.ijadhadh.2012.01.007

DO - 10.1016/j.ijadhadh.2012.01.007

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JO - International Journal of Adhesion and Adhesives

JF - International Journal of Adhesion and Adhesives

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Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens

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