Ultrasonic Testing of HPC with Mineral Admixtures

Hamid, Rahmani; Mohd‐Yusof, Khairiyah; Zain, Muhammad Fauzi Mohd.

doi:10.5772/35649

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…However, it is not possible to solve the parallel singularity problem. Hamid [11] utilizing the geometric characteristics of the Stewart mechanism, which is the hexagonal shape formed by the six hinge points of the moving platform, and the hexagonal shape formed by the six hinge points of the static platform are similar hexagons, the pose of the mechanism can be obtained using this similarity. However, this solution has certain requirements about the parameters of the solution.…”

Section: Theoretical Calculation Of Forward Kinematics Model Based On...mentioning

confidence: 99%

Design and kinematic simulation of ankle joint rehabilitation parallel robot

Ling,

Wang

2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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The person can easy to cause ankle injuries in daily activities. Therefore, the demand for ankle rehabilitation treatment is increasing. Due to the long rehabilitation cycle of the ankle joint and there is a shortage of rehabilitation therapists in China, making it difficult to receive timely rehabilitation treatment. Therefore, designing an ankle rehabilitation robot can alleviate the above situation. This thesis first studies the movement space that human ankles can reach. Secondly, determine the robot mechanism as the Stewart mechanism. To calculate the inverse solution of Stewart joint length by Matlab, using Newton method and PSO algorithm to perform forward solution to verify the accuracy of the inverse solution. Finally, the designed Stewart mechanism is imported into Simscape for dynamic simulation and its joint extension is controlled through a PID controller. The simulation results verify that the rehabilitation robot can stably achieve the required posture under PID control.

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Section: Theoretical Calculation Of Forward Kinematics Model Based On...mentioning

confidence: 99%

Design and kinematic simulation of ankle joint rehabilitation parallel robot

Ling,

Wang

2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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“…Untuk melindungi pantai dari permasalahan tersebut telah dibangun bangunan pantai detached breakwater dan groin di Pantai Pasir Panjang Singkawang. Bangunan pelindung pantai tersebut belum efektif menanggulangi permasalahan pantai karena perubahan hidrodinamis pantai tersebut (Hamid & Danial, 2016).…”

Section: Pendahuluanunclassified

Efektivitas Detached Breakwater Dan Groin Terhadap Perubahan Morfologi Pantai Pasir Panjang Singkawang

Nikodemus,

Wardani,

Wijaya

et al. 2023

dekons

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Pantai Pasir Panjang merupakan destinasi wisata di Provinsi Kalimantan Barat yang sedang berkembang dicirikan oleh proses erosi dan sedimentasi pantai. Untuk melindungi pantai dari permasalahan tersebut telah dibangun struktur pelindung pantai. Tujuan dalam penelitian ini yaitu mendapatkan karakteristik gelombang signifikan, pasang surut, dan arus; mendapatkan laju erosi dan sedimentasi; dan mengetahui efektivitas bangunan pantai eksisting terhadap erosi dan sedimentasi. Penelitian ini diawali dengan survei identifikasi kondisi bangunan pantai selanjutnya dilakukan model numerik Delft3D dengan coupling modul flow-morphology dan wave dengan mempertimbangkan dua musim, yaitu muson barat dan muson timur; kondisi tidak ada struktur dan adanya struktur; dan waktu simulasi dari tanggal 17 September hingga 1 Oktober 2022. Berdasarkan hasil simulasi numerik dalam waktu yang relatif singkat, perbedaan perubahan topografi setelah mengerahkan gelombang muson barat deposisi sedimen terjadi di belakang detached breakwater karena transpor sedimen menuju laut terhambat oleh bangunan detached breakwater, sementara itu penumpukan sedimen di sekitaran Groin tidak terlalu signifikan. Sedimen bergerak sepanjang pantai ke arah Barat Daya pada masing-masing struktur tergantung pada perubahan musim arah gelombang lepas pantai. Struktur detached breakwater dan groin terlihat efektif pada saat mengerahkan gelombang muson timur dengan cenderung terjadi keseimbangan pada pantai. Sedangkan setelah mengerahkan gelombang muson barat struktur groin terlihat kurang efektif cenderung terjadi erosi pada pantai dan sedimentasi terjadi di belakang struktur detached breakwater.

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