公开(公告)号：US20240287380A1

公开(公告)日：2024-08-29

申请号：US18571298

申请日：2022-06-15

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Weng Heng Liew ,  Kui Yao ,  Shuting Chen

IPC: C09K11/02 ,  C09K11/56 ,  C09K11/57 ,  C09K11/58 ,  H04R3/04 ,  H05B33/14 ,  H05B44/00

CPC classification number: C09K11/025 ,  C09K11/565 ,  C09K11/57 ,  C09K11/58 ,  H04R3/04 ,  H05B33/14 ,  H05B44/00 ,  H04R2430/01

Abstract: Devices and method for synchronized light and sound emission are disclosed. The device comprises: a first electrode layer; a second electrode layer; and a composite material layer disposed between the first electrode layer and the second electrode layer, the composite material layer having an electromechanical active matrix and an electroluminescent component; and wherein the electroluminescent component comprises a plurality of particle sets dispersed in the electromechanical active matrix, each particle set being continuous and having two ends each in contact with a respective one of the first and second electrode layers.

公开(公告)号：US12038270B2

公开(公告)日：2024-07-16

申请号：US17436685

申请日：2020-03-26

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Lei Zhang ,  Weng Heng Liew ,  Huajun Liu

IPC: G01B11/16

CPC classification number: G01B11/162 ,  G01B11/167

Abstract: A non-contact non-destructive testing method includes spatially and/or temporally controlling a laser excitation light based on a predetermined pattern. The laser excitation light is projected onto a surface of a test object to generate acoustic waves on the test object. The acoustic waves apply stress loading to the test object. The method also includes imaging the test object with and without stress loading using shearography imaging, and analyzing shearography imaging data to determine a presence of a defect in the test object.

公开(公告)号：US20230236155A1

公开(公告)日：2023-07-27

申请号：US18011214

申请日：2021-05-31

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Kui Yao ,  Weng Heng Liew ,  Qingqing Ke

IPC: G01N29/34 ,  G01N29/04

CPC classification number: G01N29/348 ,  G01N29/043 ,  G01N2291/0422

Abstract: A light-acoustic system and method for detecting an anomaly in a structure are provided. The system includes a light source configured to emit an excitation light and at least one excitation element attached to a surface of a structure. The at least one excitation element includes a photostrictive material and is configured to receive the excitation light for generating an oscillating strain. The oscillating strain generates an acoustic wave in the structure. The system also includes a detector configured to detect the acoustic wave.

公开(公告)号：US20220146252A1

公开(公告)日：2022-05-12

申请号：US17436685

申请日：2020-03-26

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Lei Zhang ,  Weng Heng Liew ,  Huajun Liu

IPC: G01B11/16

Abstract: A non-contact non-destructive testing method includes spatially and/or temporally controlling a laser excitation light based on a predetermined pattern. The laser excitation light is projected onto a surface of a test object to generate acoustic waves on the test object. The acoustic waves apply stress loading to the test object. The method also includes imaging the test object with and without stress loading using shearography imaging, and analyzing shearography imaging data to determine a presence of a defect in the test object.