Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens
Source abstract
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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Epoxy Resin Curing Processes · Material Properties and Processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Adhesive bonding of aircraft structures10.1016/S0143-7496(00)00006-3 ↗
2. Adams · 1997
3. Effect of material, geometry, surface treatment and environment on the shear strength of single lap joints10.1016/j.ijadhadh.2009.02.012 ↗
4. Mechanical properties of adhesives in situ and in bulk10.1016/0143-7496(94)90018-3 ↗
5. Intrinsic mechanical characterization of structural adhesives10.1016/0143-7496(86)90011-4 ↗
6. Mechanical characteristics of some cold-cured structural adhesives10.1016/0143-7496(92)90054-Y ↗
7. A depth sensing indentation study of the hardness and modulus of adhesives10.1016/j.ijadhadh.2004.02.004 ↗
8. Measurement of the mechanical properties of structural adhesives in tension and shear over a wide range of temperatures10.1163/1568561053148449 ↗
9. Substrate constraint and adhesive thickness effects on fracture toughness of adhesive joints10.1163/156856104322746992 ↗
10. Constraint effects in adhesive joint fracture10.1016/j.jmps.2005.04.009 ↗
11. Determination of triaxial stresses in bonded joints10.1016/S0143-7496(96)00028-0 ↗
12. Fracture and yield behaviour of adhesively bonded joints under triaxial stress conditions10.1023/A:1004769719895 ↗
13. Inorganic particle toughening I: micro-mechanical deformations in the fracture of glass bead filled epoxies10.1016/S0032-3861(00)00397-9 ↗
14. Inorganic particle toughening II: toughening mechanisms of glass bead filled epoxies10.1016/S0032-3861(00)00398-0 ↗
15. Fracture of glass bead/epoxy composites: on micro-mechanical deformations10.1016/S0032-3861(00)00187-7 ↗
16. Preparation and physical properties of hollow glass microspheres-reinforced epoxy matrix resins10.1016/j.msea.2005.05.015 ↗
17. Rate-dependent crack growth in adhesives-II. Experiments and analysis10.1016/S0143-7496(02)00063-5 ↗
18. Evaluating the rate-dependent fracture toughness of an automotive adhesive10.1080/00218460801952825 ↗
19. Effects of temperature and loading rate on the mechanical properties of a high temperature epoxy adhesive10.1163/016942411X580144 ↗
20. Effect of triaxial stress constraint on the deformation and fracture of polymers10.1007/BF02486573 ↗
21. Effects of a composite-like stress state on the fracture of epoxies10.1016/0266-3538(94)00075-1 ↗
22. Deformation and yield of epoxy networks in constrained states of stress10.1023/A:1018693028394 ↗
23. Ductility and toughenability study of epoxy resins under multi-axial stress states10.1023/A:1013222421843 ↗
24. da Silva · 2008
25. Influence of hydrostatic stress on failure of axisymmetric notched specimens10.1016/S0022-5096(98)00060-X ↗
26. Stress concentration factors for round and flat test specimens with notches
27. Strain concentration factor of circumferentially V-notched cylindrical bars under static tension10.1017/S1727719100002537 ↗
28. Characterisation of the fracture behaviour of polyethylene using measured cohesive curves: I: effects of constraints and rate10.1002/pen.20543 ↗