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Experimental failure analysis of mechanically fastened joints with clearance in composite laminates under preload
AbstractA failure investigation was performed to determine the failure mode and bearing strength of mechanically fastened bolted-joints in glass fiber reinforced epoxy laminated composite plates, experimentally. Two different geometrical parameters those are the edge distance-to-hole diameter ratio (E/D) and plate width-to-hole diameter ratio (W/D) were considered. For this purpose, E/D ratio was selected from 1 to 5, whereas W/D ratio was chosen from 2 to 5. Due to determining material parameters effect, laminated plates were stacked as three different group which are [0°/0°/45°/−45°]s, [0°/0°/45°/45°]s and [0°/0°/30°/30°]s, symmetrically. In addition, the preload moments were applied as 0, 3 and 6nm, since an important target of this study is to observe the changing of failure mechanism under various preloads. The experiments were also performed under a clearance, for this reason the diameters of the bolt and the circular bolt hole were fixed 5 and 6mm, respectively. Results showed that failure modes and bearing strengths were considerable affected by the increasing of preloads. Furthermore, when the material and geometrical parameters of composite bolted-joints were changed, the failure behavior and the values of bearing strengths were fully influenced from this changing.
Experimental failure analysis of mechanically fastened joints with clearance in composite laminates under preload
AbstractA failure investigation was performed to determine the failure mode and bearing strength of mechanically fastened bolted-joints in glass fiber reinforced epoxy laminated composite plates, experimentally. Two different geometrical parameters those are the edge distance-to-hole diameter ratio (E/D) and plate width-to-hole diameter ratio (W/D) were considered. For this purpose, E/D ratio was selected from 1 to 5, whereas W/D ratio was chosen from 2 to 5. Due to determining material parameters effect, laminated plates were stacked as three different group which are [0°/0°/45°/−45°]s, [0°/0°/45°/45°]s and [0°/0°/30°/30°]s, symmetrically. In addition, the preload moments were applied as 0, 3 and 6nm, since an important target of this study is to observe the changing of failure mechanism under various preloads. The experiments were also performed under a clearance, for this reason the diameters of the bolt and the circular bolt hole were fixed 5 and 6mm, respectively. Results showed that failure modes and bearing strengths were considerable affected by the increasing of preloads. Furthermore, when the material and geometrical parameters of composite bolted-joints were changed, the failure behavior and the values of bearing strengths were fully influenced from this changing.
Experimental failure analysis of mechanically fastened joints with clearance in composite laminates under preload
Sen, Faruk (author) / Pakdil, Murat (author) / Sayman, Onur (author) / Benli, Semih (author)
2007-05-23
11 pages
Article (Journal)
Electronic Resource
English
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