公开(公告)号：US20210131981A1

公开(公告)日：2021-05-06

申请号：US17041963

申请日：2018-09-27

Applicant: Topcon Corporation ,  RIKEN

Inventor： Yuichi YOSHIMURA ,  Maki MIZUTA ,  Hideyuki SUNAGA ,  Yoshie OTAKE

IPC: G01N23/05 ,  G01N33/38 ,  G01N23/02 ,  G01N23/09

Abstract: The non-destructive inspection method includes: a water absorbing or drying step of changing a water-content state of a test piece; a transmission image capturing step of irradiating, with a radiation, the test piece absorbed water or dried for a predetermined time in the water absorbing or drying step and capturing a transmission image created by visualizing the radiation transmitted through the test piece; and an evaluation step of evaluating the test piece on the basis of the water-content state of the test piece determined from the transmission image captured in the transmission image capturing step.

公开(公告)号：US20230213462A1

公开(公告)日：2023-07-06

申请号：US18008747

申请日：2021-06-18

Applicant: RIKEN

Inventor： Yoshie OTAKE ,  Yoshimasa IKEDA ,  Yuichi YOSHIMURA ,  Takao HASHIGUCHI ,  Maki MIZUTA ,  Hirokazu KITAGAWA ,  Kenta KATO

IPC: G01N23/20008 ,  G01N33/2045

CPC classification number: G01N23/20008 ,  G01N33/2045

Abstract: A cable inspection device non-destructively inspects a cable used for supporting a bridge. The cable inspection device includes a neutron source and a neutron detection device. The neutron source emits neutrons to the cable. The neutron detection device includes a detection surface arranged outside the cable, and detects target neutrons and measures the number of the detected target neutrons when neutrons are emitted to the cable. The target neutrons are among the neutrons released from the cable and incident on the detection surface, and each have an energy equal to or lower than a predetermined value that is lower than an energy of a fast neutron.