Abstract
This paper focuses on fracture toughness measured using end-notched flexure tests under Mode II static loading in aluminium alloy (5052-H34), glass fibre-reinforced polypropylene matrix composite (GF/PP) and carbon fibre-reinforced epoxy matrix composite (CF/EP) adherends bonded with DP8005 adhesive. Traction–separation relations are also presented using a cohesive zone model to estimate the fracture toughness under mixed-mode loading. The experimental results show that the fracture toughness values of the aluminium alloy, GF/PP and CF/EP specimens are 2398, 2474 and 2428 Jm−2, respectively. Fracture surface observations reveal that failure types for the aluminium alloy, GF/PP and CF/EP specimens are mainly cohesive. It can be concluded that Mode II fracture toughness shows a low degree of dependence on the different adherends bonded with an acrylic-based adhesive when cohesive failures are dominant. By assigning the experimental parameters in the failure criteria, the fracture toughness can be estimated under different mixed modal ratios.
| Original language | English |
|---|---|
| Pages (from-to) | 1795-1808 |
| Number of pages | 14 |
| Journal | Fatigue and Fracture of Engineering Materials and Structures |
| Volume | 40 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2017 Nov |
| Externally published | Yes |
Keywords
- acrylic
- aluminium alloy
- cohesive
- composites
- fracture mechanics
- mode II
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering