Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Waleed Al-Ashtari"'
Autor:
Waleed Al-Ashtari
Publikováno v:
Journal of Engineering, Vol 30, Iss 10 (2024)
A new model for the non-linear propeller-pendulum system is derived in this study. The model takes into consideration the effects of external disturbances and the properties of the pendulum elements. Two systems with PID controllers are simulated. In
Externí odkaz:
https://doaj.org/article/e2720b16c19a4cdeb14fb8e656870030
Autor:
Waleed AL-ASHTARI
Publikováno v:
International Journal of Applied Mechanics and Engineering, Vol 28, Iss 3, Pp 13-27 (2023)
In this paper, the Active Suspension System (ASS) of road vehicles was investigated. In addition to the conventional stiffness and damper, the proposed ASS includes a fuzzy controller, a hydraulic actuator, and an LVDT position sensor. Furthermore, t
Externí odkaz:
https://doaj.org/article/c017c1eff6314a4b92ea6bd2734bb47a
Autor:
Haider Jaafar Chilabi, Hanim Salleh, Waleed Al-Ashtari, E. E. Supeni, Luqman Chuah Abdullah, Azizan B. As’arry, Khairil Anas Md Rezali, Mohammad Khairul Azwan
Publikováno v:
Energies, Vol 14, Iss 11, p 3098 (2021)
Rotational Piezoelectric Energy Harvesting (RPZTEH) is widely used due to mechanical rotational input power availability in industrial and natural environments. This paper reviews the recent studies and research in RPZTEH based on its excitation elem
Externí odkaz:
https://doaj.org/article/890f748520c049129645a8bb7a0b735f
Autor:
Waleed Al-Ashtari
Publikováno v:
Journal of Engineering, Vol 22, Iss 6, Pp 117-136 (2016)
In this paper, an analytical solution describing the deflection of a cracked beam repaired with piezoelectric patch is introduced. The solution is derived using perturbation method. A novel analytical model to calculate the proper dimensions of piezo
Externí odkaz:
https://doaj.org/article/bff286063c794c688ec18c3c6fd3257e
Autor:
Waleed Al-Ashtari
Publikováno v:
Journal of Engineering, Vol 21, Iss 7, Pp 1-16 (2015)
A cantilevered piezoelectric beam with a tip mass at its free end is a common energy harvester configuration. This paper introduces a new principle of designing such a harvester which increases the generated voltage without changing the natural frequ
Externí odkaz:
https://doaj.org/article/a1aa109f9e7f40acb7c6695918d135d4
Publikováno v:
Journal of Engineering, Vol 21, Iss 9 (2015)
Autonomous systems are these systems which power themselves from the available ambient energies in addition to their duties. In the next few years, autonomous systems will pervade society and they will find their ways into different applications rela
Externí odkaz:
https://doaj.org/article/4b341c7aff194508b1148f038d59b7d4
Autor:
Azizan As’arry, Luqman Chuah Abdullah, Eris Elianddy Supeni, Hanim Salleh, Mohammad Khairul Azwan, Khairil Anas Md Rezali, Haider Jaafar Chilabi, Waleed Al-Ashtari
Publikováno v:
Energies, Vol 14, Iss 3098, p 3098 (2021)
Rotational Piezoelectric Energy Harvesting (RPZTEH) is widely used due to mechanical rotational input power availability in industrial and natural environments. This paper reviews the recent studies and research in RPZTEH based on its excitation elem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7c7cb909537a3a14be8e9ca1b5b34f1
https://www.mdpi.com/1996-1073/14/11/3098
https://www.mdpi.com/1996-1073/14/11/3098
Publikováno v:
Journal of Intelligent Material Systems and Structures. 24:1332-1342
A piezoelectric cantilever beam with a tip mass at its free end is a common energy harvester configuration. This article introduces a new principle of designing such a harvester that increases the generated power without changing the resonance freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42c4c8a6943c110f868d5ee9ccfd11a6
https://doi.org/10.1177/1045389x13483021
https://doi.org/10.1177/1045389x13483021
Publikováno v:
Smart Materials and Structures. 21:035019
A piezoelectric energy harvester is an electromechanical device that converts ambient mechanical vibration into electric power. Most existing vibration energy harvesting devices operate effectively at a single frequency only, dictated by the design o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c9d2e7c49ab14bd953a155108a03f6b
https://doi.org/10.1088/0964-1726/21/3/035019
https://doi.org/10.1088/0964-1726/21/3/035019
Autor:
Waleed Al-Ashtari
Publikováno v:
Waleed Al-Ashtari
مجلة النهرين للعلوم الهندسية, Vol 11, Iss 1, Pp 43-51 (2008)
مجلة النهرين للعلوم الهندسية, Vol 11, Iss 1, Pp 43-51 (2008)
In this research, the governing equation of the thin smart beam transverse deflection was derived by the same procedure that the Bernoulli-Euler equation derived but with some additional mathematical terms to be valid for describing the smart beam. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::afbc8e8c99fb1a5971e29123734271d3
https://nahje.com/index.php/main/article/view/495
https://nahje.com/index.php/main/article/view/495
