PSI - Issue 83

R.J.B. Rocha et al. / Procedia Structural Integrity 83 (2026) 187–195

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c)

d)

Fig. 5. Experimental and numerical CZM P- δ curves for PLA adherends bonded with 2015: (a, c) SLJ and (b, d) SJ at L O =10 and 20 mm.

a)

b)

c)

Fig. 6. Average experimental P max as a function of L O for SLJ using (a) PLA, (b) ABS and (c) PETG adherends bonded with 2015 and 7752.

Fig. 7 shows the corresponding P max vs. L O results for the SJ. Here the strength scaling is markedly different: P max remains almost constant with increasing L O when bonded with 2015. This is due to the adherend failure initiating at the step edge. The PLA/2015 combination again provides the highest P max (around 2.36-2.40 kN). The 7752 shows a modest increase with the increase of L O , although absolute values stay lower than in SLJ.

a)

b)