EP 4056296 C0 20240424 - METHOD FOR CONTROLLING THE QUALITY OF INSTALLATION OF A BLIND FASTENER
Title (en)
METHOD FOR CONTROLLING THE QUALITY OF INSTALLATION OF A BLIND FASTENER
Title (de)
METHODE ZUR ÜBERPRÜFUNG DER QUALITÄT DER INSTALLATION EINER BLINDBEFESTIGUNG
Title (fr)
MÉTHODE POUR CONTRÔLER LA QUALITÉ DE L'INSTALLATION D'UNE FIXATION AVEUGLE
Publication
Application
Priority
FR 2102451 A 20210312
Abstract (en)
[origin: US2022288670A1] 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.
IPC 8 full level
B21J 15/04 (2006.01); B21J 15/28 (2006.01)
CPC (source: EP US)
B21J 15/043 (2013.01 - EP US); B21J 15/28 (2013.01 - US); B21J 15/285 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Participating member state (EPC – UP)
AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI
DOCDB simple family (publication)
EP 4056296 A1 20220914; EP 4056296 B1 20240424; EP 4056296 C0 20240424; FR 3120552 A1 20220916; FR 3120552 B1 20240412; US 11826816 B2 20231128; US 2022288670 A1 20220915
DOCDB simple family (application)
EP 22161522 A 20220311; FR 2102451 A 20210312; US 202217688546 A 20220307