Periodic Reporting for period 2 - WIBOND (WING BOX BONDING)
Período documentado: 2020-05-01 hasta 2021-09-30
Possibility to bond aerospace structure using paste adhesive have several potential advantage like avoiding drilling and fasteners installation and in the mean time fill the gap among part to be assembled . in addition paste adhesive work also to seal structures that are filled with fuel as in the case of wing box. This would means a significant reduction of assembly cost and flow time. Moreover the substantial reduction of fasteners reduce the weight of structure with potential fuel saving during service.
In spite of these advantages structural bonding by paste adhesive has not yet applied on commercial aircraft for the concern of Airworthiness agency about reliability and repeatability of bonding process.
WIBOND process has the ambition to overcome these concern developing, fabricating and delivery a bonding jig on which critical parameters of bonding process like part positioning, application of pull up load and bonding pressure are applied in a controlled and repeatable mode.
Using this jig after a series of simulated bonding necessary to set up all the relevant parameters, the subscale box has been bonded. In this phase fiber optic sensor for structural Health Monitoring have been embedded in the bond line in support of a task of OPTICOM project also if this was not included in the WIBOND gap.
After dimensional inspection the subscale box will be structurally tested and then returned to IAI for final.
In parallel full scale jig design is progressing.