A blind pull type fastener includes a pin, a sleeve, a collar, and a bulb-forming portion. The pin includes a head. The pin is pulled so that the head applies force to the bulb-forming portion. The bulb-forming portion is deformed to form a bulb. The collar is deformed into a void of the sleeve. The pin includes locking rings. The collar is deformed to lock with the locking rings.

A device for setting a temporary fastener. The temporary fastener includes a body with an expandable/retractable end and a rotary element capable of being driven in rotation so as to cause the expandable/retractable end to expand/retract. The device includes a support module that is able to house a temporary fastener and has a holder for holding the temporary fastening inside the module. The holder is movable between at least: a locking position in which the holder is deployed inside the module so as to cooperate with a temporary fastener placed in the module in order to prevent it from moving in translation inside the module, and a rest position in which the holder is retracted so as to allow a temporary fastener to pass through the module.

A device for setting a temporary fastener. The temporary fastener includes a body with an expandable/retractable end and a rotary element capable of being driven in rotation so as to cause the expandable/retractable end to expand/retract. The device includes a support module that is able to house a temporary fastener and has a holder for holding the temporary fastening inside the module. The holder is movable between at least: a locking position in which the holder is deployed inside the module so as to cooperate with a temporary fastener placed in the module in order to prevent it from moving in translation inside the module, and a rest position in which the holder is retracted so as to allow a temporary fastener to pass through the module.

According to a first aspect of the invention there as provided a method of forming a riveted joint comprising a UHSS layer and a non-UHSS layer using a self-piercing rivet comprising a head and a shank, an outer diameter of a top of the shank being greater than an outer diameter of a bottom of the shank before insertion of the rivet, the method comprising pushing the self-piercing rivet into the UHSS layer such that the lower portion of the shank flares outwards and cuts a slug from the UHSS, and pushing the flared shank of the self-piercing rivet and the slug into the non-UHSS layer such that the non-UHSS layer deforms into a die recess and flows around an outer surface of the flared shank.

According to a first aspect of the invention there as provided a method of forming a riveted joint comprising a UHSS layer and a non-UHSS layer using a self-piercing rivet comprising a head and a shank, an outer diameter of a top of the shank being greater than an outer diameter of a bottom of the shank before insertion of the rivet, the method comprising pushing the self-piercing rivet into the UHSS layer such that the lower portion of the shank flares outwards and cuts a slug from the UHSS, and pushing the flared shank of the self-piercing rivet and the slug into the non-UHSS layer such that the non-UHSS layer deforms into a die recess and flows around an outer surface of the flared shank.

Disclosed are systems and methods for coupling a first panel to a second panel via a fastening system. The fastening system comprises fastener, a doghouse structure, and a seal assembly. The fastener includes a head assembly coupled to a collar. The head assembly is configured to engage a doghouse structure positioned on the first panel and the collar is configured to pass through and to retain the second panel via an opening formed in the second panel. The seal assembly includes a seal and a seal carrier. The seal carrier is coupled to the fastener via a frangible connection.

Disclosed are systems and methods for coupling a first panel to a second panel via a fastening system. The fastening system comprises fastener, a doghouse structure, and a seal assembly. The fastener includes a head assembly coupled to a collar. The head assembly is configured to engage a doghouse structure positioned on the first panel and the collar is configured to pass through and to retain the second panel via an opening formed in the second panel. The seal assembly includes a seal and a seal carrier. The seal carrier is coupled to the fastener via a frangible connection.

This relates to a method for the quality control of a blind fastener installation in a structure comprising a sleeve and a core bolt, with a deformation of a rear side of the structure, a signal being generated during the installation process. The process includes a) identification of two notable points of the signal, chosen among: pulling start point (S1); buckling (B1) of the sleeve; contact (B2, S2) of the sleeve or of the core bolt; force setpoint (B3) or fracture (S3) of a portion of the core bolt; b) estimation of a first parameter as a function of a notable point, characterizing a bulb in contact with the rear side; c) estimation of a second parameter as a function of a notable point, characterizing a tension applied in the core bolt; and d) for each estimated parameter, comparison with a condition that indicates the proper installation of the fastener.

This relates to a method for the quality control of a blind fastener installation in a structure comprising a sleeve and a core bolt, with a deformation of a rear side of the structure, a signal being generated during the installation process. The process includes a) identification of two notable points of the signal, chosen among: pulling start point (S1); buckling (B1) of the sleeve; contact (B2, S2) of the sleeve or of the core bolt; force setpoint (B3) or fracture (S3) of a portion of the core bolt; b) estimation of a first parameter as a function of a notable point, characterizing a bulb in contact with the rear side; c) estimation of a second parameter as a function of a notable point, characterizing a tension applied in the core bolt; and d) for each estimated parameter, comparison with a condition that indicates the proper installation of the fastener.

Methods, systems and tools for securing to a panel an expandable fastener having a threaded component and a mushrooming component, the tool including a sleeve having a cylindrical body with a hollow inside portion and an internal spline configured to match a splined shoulder of the mushrooming component, a drive shaft having a driving portion configured to engage and rotate the threaded component, the driving portion positioned within the hollow portion of the sleeve, and a driven portion configured to be driven by an arbor, the arbor having a first shaft portion configured to engage with the driven portion and drive the drive shaft, and a second shaft portion configured to connect to a drill or nut driver to drive the drive shaft to turn the threaded component relative to the mushrooming component and collapse the mushrooming component.