-
公开(公告)号:US20210140924A1
公开(公告)日:2021-05-13
申请号:US17151171
申请日:2021-01-17
Applicant: Elbit Systems Ltd.
Inventor: Oran WEISS , Oleg NAIGERTSIK
Abstract: A system and a method of monitoring physical properties of a physical medium over time are provided herein. The method may include the following steps: embedding a plurality of acoustic sensors into a physical medium before curing thereof; transmitting an acoustic wave by at least one transmitter coupled to or embedded within said physical medium; repeatedly calculating, over different points of time, a travel time of said acoustic wave between the at least one transmitter and the plurality of acoustic sensors; and analyzing said travel times, to detect a change over time in physical properties of said physical medium associated with said travel time.
-
公开(公告)号:US20210131883A1
公开(公告)日:2021-05-06
申请号:US16769915
申请日:2018-12-04
Applicant: Elbit Systems Ltd.
Inventor: Oleg NAIGERTSIK , Orit HAREL , Shlomi TURGEMAN , Tomer FROIMOVICH
IPC: G01L1/12 , H01L41/193 , G01N33/38 , G01N3/08 , H01L41/113 , G01L1/24
Abstract: A method and an apparatus for detecting a modification of a compound, the modification occurring during a transient period. The method may include: coupling at least one substance portion comprising ferro elastic material to a compound, the substance portion being configured to change a polarization level thereof continuously in response to a strain gradient applied thereto over the a transient period which results in said modification; sensing a physical property of said substance portion affected by the polarization level of the substance portion, due to the modification; and determining, using a computer processor, the modification, based on the sensed physical property of the substance portion.
-