US 11,867,582 B2
Assembly and method for measuring strain in a washer
Sigbjørn Kolberg, Oslo (NO); Magnus Hjelstuen, Trondheim (NO); and Tor Arne Reinen, Trondheim (NO)
Assigned to SINTEF TTO AS, Trondheim (NO)
Appl. No. 17/275,063
Filed by SINTEF TTO AS, Trondheim (NO)
PCT Filed Sep. 5, 2019, PCT No. PCT/NO2019/050175
§ 371(c)(1), (2) Date Mar. 10, 2021,
PCT Pub. No. WO2020/055261, PCT Pub. Date Mar. 19, 2020.
Claims priority of application No. 20181195 (NO), filed on Sep. 12, 2018.
Prior Publication US 2022/0057282 A1, Feb. 24, 2022
Int. Cl. G01L 5/24 (2006.01); F16B 31/02 (2006.01); G01N 29/12 (2006.01); G01N 29/34 (2006.01); G01N 29/07 (2006.01); G01N 29/32 (2006.01)
CPC G01L 5/243 (2013.01) [F16B 31/028 (2013.01); G01L 5/246 (2013.01); G01N 29/12 (2013.01); G01N 29/343 (2013.01); F16B 2031/022 (2013.01); G01N 29/07 (2013.01); G01N 29/326 (2013.01); G01N 2291/044 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A strain measuring washer assembly comprising:
a plate shaped washer body, at least provided with a washer body central opening extending through the plate shaped washer body, a washer body outer peripheral surface, and a closed internal cavity surrounding the washer body central opening;
sound emitting means, positioned on the washer body outer peripheral surface and configured to emit a sound signal into the plate shaped washer body; and
sound detecting means positioned on the washer body outer peripheral surface and configured to detect an echo response of the sound signal from the plate shaped washer body.