US 12,117,417 B2
Method for producing a fiber-reinforced plastic comparison body and testing method
Helmuth Hoeller, Ried im Innkreis (AT); Anna Carina Spindler, Ried im Innkreis (AT); and Stefan Kroissmayr, Ried im Innkreis (AT)
Assigned to FACC AG, Ried im Innkreis (AT)
Appl. No. 17/268,073
Filed by FACC AG, Ried im Innkreis (AT)
PCT Filed Sep. 10, 2019, PCT No. PCT/AT2019/060292
§ 371(c)(1), (2) Date Feb. 11, 2021,
PCT Pub. No. WO2020/051609, PCT Pub. Date Mar. 19, 2020.
Claims priority of application No. A 50765/2018 (AT), filed on Sep. 10, 2018.
Prior Publication US 2021/0316516 A1, Oct. 14, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 70/30 (2006.01); B29C 70/06 (2006.01); G01N 25/72 (2006.01); G01N 29/04 (2006.01)
CPC G01N 29/043 (2013.01) [B29C 70/06 (2013.01); B29C 70/30 (2013.01); G01N 25/72 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for producing a fibre-reinforced plastic (FRP) comparison body, wherein the comparison body can be used for modelling a layer porosity and for the non-destructive testing of FRP components, the method comprising:
i. Producing a first part of the FRP comparison body by
a. arranging a first FRP layer, the first FRP layer including a hole;
b. arranging at least one second FRP layer on said first FRP layer; and
c. pre-hardening the arrangement of said first FRP layer and said at least one second FRP layer to obtain said first part of the FRP comparison body, wherein a placeholder separate from the first FRP layer is inserted into the hole after the hole is produced and before the pre-hardening of the arrangement of said first FRP layer and said at least one second FRP layer, wherein the placeholder is a plate, wherein the placeholder remains in the hole when the arrangement of said first FRP layer and said at least one second FRP layer is pre-hardened, wherein the placeholder prevents the at least one second FRP layer of the arrangement of said first FRP layer and said at least one second FRP layer from projecting into the hole, and wherein the placeholder is removed from the hole before the hardening of an arrangement of the first part and a second part of the FRP comparison body;
ii. producing the second part of the FRP comparison body by
a. arranging at least one further FRP layer; and
b. pre-hardening the arrangement of said at least one further FRP layer in order to obtain said second part of the FRP comparison body;
iii. connecting said first part to said second part, wherein the hole on said first part is facing said second part; and
iv. hardening the arrangement of said first part and said second part, wherein a layer porosity is formed on the hole in the first FRP layer.