Effects of joint geometry and bolt torque on the structural performance of single bolt tension joints in pultruded GRP sheet material

Effect of Bolt-Hole Clearance on Bolted Connection Behavior for Pultruded Fiber-Reinforced Polymer Structural Plastic Members

“…In general, there are four possible failure modes for pultruded fiber-reinforced polymer plastic (PFRP) singlebolted connections that are subjected to tensile forces [5][6][7][8][9][10][11][12], as shown in Figure 1. Figure 1(a) illustrates net-tension failure, which is attributable to the reduced cross-sectional area of a FRP member that is due to the bolt hole.…”

A review of the behaviour and analysis of bolted connections and joints in pultruded fibre reinforced polymers

“…For completeness the test data collected in Cooper and Turvey [15] for an angle of 0 is also considered. The test set-up is identical to that adopted in previous test series at Lancaster University.…”

“…Several experimental studies [9,15,16,18] have underlined the effect of lateral constraint for torqued bolt conditions, the effect of clamping load and the effect of secondary bending on the potential to shift the failure mode and affect the connection resistance. Some of these contributions are reviewed in this section.…”

“…Cooper and Turvey [15] In their work on double-lap single-bolted connections, Yuan and Liu [16] also investigated the effect of variations of bolt torque. They used the same test configurations described in sub-section 2.1.2.…”

Effect of Hot-Wet Aging on the Pin-Bearing Strength of a Pultruded Material with Polyester Matrix

“…When the connection force is aligned with the longitudinal direction of pultrusion (see It is well-known that bearing strength increases significantly on bolt tightening because a bolt torque provides stiffness constraint to oppose the 'free' through-thickness deformation that will encourage the initiation of delamination cracks (Cooper and Turvey 1995). Because there is no guarantee that bolting will not work loose over the service life of a structure (Mottram 2004), it is prudent to specify that the bearing strength in Equation (1) shall be that of the pin-bearing value.…”