Zobrazeno 1 - 10
of 478
pro vyhledávání: '"Billie F. Spencer"'
Publikováno v:
Sensors, Vol 24, Iss 17, p 5633 (2024)
Of the 100,000 railroad bridges in the United States, 50% are over 100 years old. Many of these bridges do not meet the minimum vertical clearance standards, making them susceptible to impact from over-height vehicles. The impact can cause structural
Externí odkaz:
https://doaj.org/article/75b2718136db4d8bb1fbc8a65dcb7eab
Autor:
Amirali Najafi, Billie F. Spencer Jr.
Publikováno v:
Journal of Applied and Computational Mechanics, Vol 7, Iss Special Issue, Pp 1252-1265 (2021)
Hybrid simulation (HS) is a cost-effective alternative to shake table testing for evaluating the seismic performance of structures. HS structures are partitioned into linked physical and numerical substructures, with actuators and sensors providing t
Externí odkaz:
https://doaj.org/article/7458dbca0fcd41e1be41b9979aaa2579
Publikováno v:
Sensors, Vol 23, Iss 6, p 3330 (2023)
Railroads are a critical part of the United States’ transportation sector. Over 40 percent (by weight) of the nation’s freight is transported by rail, and according to the Bureau of Transportation statistics, railroads moved $186.5 billion of fre
Externí odkaz:
https://doaj.org/article/aa6354ef5a974e75b478b121a009c3a3
Publikováno v:
Engineering, Vol 5, Iss 2, Pp 199-222 (2019)
Computer vision techniques, in conjunction with acquisition through remote cameras and unmanned aerial vehicles (UAVs), offer promising non-contact solutions to civil infrastructure condition assessment. The ultimate goal of such a system is to autom
Externí odkaz:
https://doaj.org/article/37b90bb0cc1244ff92c5d807a386f9a5
Publikováno v:
Sensors, Vol 22, Iss 15, p 5701 (2022)
Bridge strikes by over-height vehicles or ships are critical sudden events. Due to their unpredictable nature, many events go unnoticed or unreported, but they can induce structural failures or hidden damage that accelerates the bridge’s long-term
Externí odkaz:
https://doaj.org/article/222cc38158ad43fdaabcdb9c2a1546d6
Autor:
Omobolaji Lawal, Amirali Najafi, Tu Hoang, Shaik Althaf V. Shajihan, Kirill Mechitov, Billie F. Spencer
Publikováno v:
Sensors, Vol 22, Iss 5, p 1998 (2022)
Civil infrastructure worldwide is subject to factors such as aging and deterioration. Structural health monitoring (SHM) can be used to assess the impact of these processes on structural performance. SHM demands have evolved from routine monitoring t
Externí odkaz:
https://doaj.org/article/079d4b13610241fab53742dc1541e2cf
Autor:
Nathaniel M. Levine, Billie F. Spencer
Publikováno v:
Sensors, Vol 22, Iss 3, p 873 (2022)
Computer vision has shown potential for assisting post-earthquake inspection of buildings through automatic damage detection in images. However, assessing the safety of an earthquake-damaged building requires considering this damage in the context of
Externí odkaz:
https://doaj.org/article/d3ac1729d7c14212bde4ba067b797958
Publikováno v:
Sensors, Vol 22, Iss 2, p 532 (2022)
Manual visual inspection of civil infrastructure is high-risk, subjective, and time-consuming. The success of deep learning and the proliferation of low-cost consumer robots has spurred rapid growth in research and application of autonomous inspectio
Externí odkaz:
https://doaj.org/article/035b277f8c46484ebe642a9993aa3f52
Publikováno v:
Mathematics, Vol 9, Iss 15, p 1758 (2021)
After a major seismic event, structural safety inspections by qualified experts are required prior to reoccupying a building and resuming operation. Such manual inspections are generally performed by teams of two or more experts and are time consumin
Externí odkaz:
https://doaj.org/article/8f4b91c46f124471bfaac982be481c08
Autor:
Vedhus Hoskere, Fouad Amer, Doug Friedel, Wanxian Yang, Yu Tang, Yasutaka Narazaki, Matthew D. Smith, Mani Golparvar-Fard, Billie F. Spencer
Publikováno v:
Applied Sciences, Vol 11, Iss 2, p 520 (2021)
The tremendous success of automated methods for the detection of damage in images of civil infrastructure has been fueled by exponential advances in deep learning over the past decade. In particular, many efforts have taken place in academia and more
Externí odkaz:
https://doaj.org/article/d305c1a5927e4bec88c644b40776dc69