Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Janet F.C. Sham"'
Autor:
Wallace W.L. Lai, Janet F.C. Sham
Publikováno v:
Tunnelling and Underground Space Technology. 134:104933
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84ddfefdbd339565cf73d15b4a3ebc00
https://doi.org/10.1016/j.tust.2022.104933
https://doi.org/10.1016/j.tust.2022.104933
Publikováno v:
Journal of Composites for Construction. 25
Good bond and water impermeability in fiber-reinforced polymer (FRP) bonded/coated systems are essential if the durability of FRP-rehabilitated concrete structures is to be ensured. In add...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cac6ab477654e5f524eb6af0ce034f3
https://doi.org/10.1061/(asce)cc.1943-5614.0001158
https://doi.org/10.1061/(asce)cc.1943-5614.0001158
Publikováno v:
Tunnelling and Underground Space Technology. 84:440-450
This paper presents a case study of customizing an in-house built In-pipe Infrared Thermographic System (IPITS), which makes use of thermo-images for imaging and diagnosis of pipe crown condition in underground sewer pipelines. Active and passive inf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c896a20c7df655ac3ed377ba43ce55db
https://doi.org/10.1016/j.tust.2018.11.013
https://doi.org/10.1016/j.tust.2018.11.013
Publikováno v:
Tunnelling and Underground Space Technology. 76:76-91
Estimation of Ground Penetrating Radar (GPR) wave velocity and the real part of dielectric permittivity ( e ′ ) play an important role when assessing the condition of buried objects because e ′ is highly affected by moisture and void content in m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9de9b52342207226cb249f90e8850ee
https://doi.org/10.1016/j.tust.2018.02.005
https://doi.org/10.1016/j.tust.2018.02.005
Publikováno v:
Journal of Applied Geophysics. 149:10-17
Blind test/experiment is widely adopted in various scientific disciplines like medicine drug testing/clinical trials/psychology, but not popular in nondestructive testing and evaluation (NDTE) nor near-surface geophysics (NSG). This paper introduces
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1ba0434a5f3cf49c1c4160ce735d54a
https://doi.org/10.1016/j.jappgeo.2017.12.010
https://doi.org/10.1016/j.jappgeo.2017.12.010
Publikováno v:
Construction and Building Materials. 151:840-847
This paper studies the perturbation patterns of GPR images as a tool for tracing water seepage pathway in a plastic and concealed water pipe in a full-scale concrete wall specimen. Water seepage was triggered with a water circulation system and a pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::111cc3f41608b9fbbb40dc7082ab8b9a
https://doi.org/10.1016/j.conbuildmat.2017.06.148
https://doi.org/10.1016/j.conbuildmat.2017.06.148
Publikováno v:
Proceedings of QIRT Asia 2019.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd71d74fa7d1da997a8cb3a350d7a14
https://doi.org/10.21611/qirt.2019.005
https://doi.org/10.21611/qirt.2019.005
Publikováno v:
Tunnelling and Underground Space Technology. 109:103740
Moisture content contained in any dielectric media is the most influential factor reducing Ground Penetrating Radar (GPR) wave velocity, which can be measured by the gradients of diffractive hyperbolas as a result of any round-shaped object, such as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5987f34be53e7325086482e2b4b85682
https://doi.org/10.1016/j.tust.2020.103740
https://doi.org/10.1016/j.tust.2020.103740
Autor:
Wallace W.L. Lai, Janet F.C. Sham
Publikováno v:
NDT & E International. 83:104-113
The development of a new algorithm to estimate electromagnetic (EM) wave propagation velocity (v) with shielded ground penetrating radar (GPR) antenna with high-frequency of 2 GHz is presented in this paper. Common offset method (fixed transmitter-re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8205923b2d1880e5b11386d9edd74f2c
https://doi.org/10.1016/j.ndteint.2016.05.002
https://doi.org/10.1016/j.ndteint.2016.05.002
Publikováno v:
NDT & E International. 82:36-43
Estimation of ground penetrating radar's wave velocity in materials is a critical step to accurately estimate depth of embedded line objects in concrete structures, and wetness of material. Errors of velocity are defined as the deviations between the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da2e61e17c85da369771819ae0944bd4
https://doi.org/10.1016/j.ndteint.2016.03.003
https://doi.org/10.1016/j.ndteint.2016.03.003