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Pemodelan Wahana Rintang Bola untuk Meningkatan Kerja Sama Anak di Taman Mekarsari, Boyolali Santoso, Budi; Imaduddin, Fitrian; Triyono, Joko; Widodo, Purwadi Joko; Lambang G H, Raymundus Lullus; Sukanto, Heru; Ubaidillah, Ubaidillah; Arifin, Zainal; Prasojo, Yudin Joko; Prasetyo, Singgih Dwi
Jurnal PADAMU NEGERI (Pengabdian pada Masyarakat Bidang Eksakta) Vol. 4 No. 2 (2023)
Publisher : Perkumpulan Dosen Muda (PDM) Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37638/padamunegeri.v4i2.816

Abstract

Anak-anak usia dini merupakan masa dimana bermain masih menjadi rutinitas yang dilakukan setiap saat. Untuk memfasilitasi bermain anak, perlu adanya taman bermain agar anak-anak dapat berinteraksi satu sama lain. Taman bermain merupakan lingkungan yang menyediakan kesempatan bermain, belajar, rekreasi, dan berinteraksi bagi anak-anak. Taman bermain tidak hanya merupakan tempat hiburan semata, tetapi juga berperan sebagai ruang pendidikan yang mendukung perkembangan fisik, kognitif, sosial, dan karakteristik anak-anak. Maka dari itu, dilakukan Pengabdian dengan tujuan untuk meningkatkan kerja sama dari anak-anak yang bermain. Melalui kerjasama ini diharapkan dapat terbentuk sifat saling percaya dalam diri anak-anak yang masih dalam masa perkembangan. Pengabdian ini dilakukan dengan merancang wahana bermain untuk anak berupa rintang bola di Taman Mekarsari Desa Kaligentong, Kecamatan Gladagsari, Kabupaten Boyolali. wahana bermain rintang bola adalah sumber daya berharga untuk memfasilitasi perkembangan keterampilan motorik anak usia prasekolah. Penggunaan wahana bermain rintang bola dalam taman bermain dapat menjadi sarana yang efektif untuk meningkatkan keterampilan fisik dan perkembangan anak-anak secara menyenangkan dan interaktif. Hasil Pengabdian ini diharapkan dapat memberikan sumbangan yang berarti bagi pengembangan lebih lanjut dari wahana bermain yang mendukung perkembangan anak secara menyeluruh.
An MR Damper Parametric Model with luz(...) Projection Function and Its Application in an Open-loop Force Tracking Control System Hidajat, Raymundus Lullus Lambang Govinda; Imaduddin, Fitrian; Santoso, Budi; Irianto, Irianto; Putra, Azma; Ubaidillah, Ubaidillah
Mekanika: Majalah Ilmiah Mekanika Vol 23, No 2 (2024): MEKANIKA : Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v23i2.90437

Abstract

This research discusses a parametric model with a luz(...) projection function for an outer bypass Magnetorheological (MR) damper with a meandering type valve and its application in an open-loop force tracking control system. This parametric model with the luz(…) projection function has been developed previously. The MR damper force can be controlled with open-loop force as a standard control strategy. Research on the performance of the MR damper model in open-loop control systems usually uses non-parametric models. Thus, the novelty of this research is that it uses a parametric model, i.e., the model of the luz(...) projection function as the model of the outer bypass MR damper with a meandering type valve. The proposed open-loop control system uses an inverse model that produces an electric current according to the desired force. The force tracking control scheme was realized with computer simulations using a state space approach. These simulation results show that the model with the luz(…) projection function can efficiently and accurately track the desired force in an open-loop force-tracking control system. The desired force is sinusoidal, square, and sawtooth waveform. Relative Error (RE) of 0.000, 0.0123, and 0.0563, respectively, are achieved. 
An Examination of the Fe₃O₄ nanomaterial impact in conjunction with Magnetorheological Elastomer material Priyandoko, Gigih; Ubaidillah, Ubaidillah; Imaduddin, Fitrian; Suwandono, Purbo; Sasongko, Muhammad Ilman Nur
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.006

Abstract

Magnetorheological elastomer (MRE) is an advanced material class that can be used for vibration damping. This material possesses the ability to reduce vibration disturbances through adjustment of its mechanical properties in response to a magnetic field applied from an external source. The objective of this study is to ascertain the effect of incorporating Magnetite (Fe₃O₄) nanomaterials into MRE. It is expected that this new material will be more sensitive to magnetic fields in damping vibrations, which would be a significant improvement. MRE is composed of carbonyl iron powder (CIP), silicone oil, and silicone rubber, with weight proportions of 30%, 5%, and 65%, correspondingly. The addition of magnetite nanomaterials to MRE occurred at weight ratios of 0.5%, 1%, 1.5%, and 2%. Observations of this new material included elemental composition analysis and viscoelastic testing of various mixture formulations in the laboratory. From this research, it can be concluded that an MRE containing Fe₃O₄ nanomaterials has been created. For the attenuation of vibrations within the 1–100 Hz frequency range. MRE-2 (MRE with 0.5% Fe₃O₄ added) is the best choice as the primary material, as it exhibited the highest tan delta value and strong damping performance at an intermediate frequency. MRE-1 sample was used as a base material mixture without added Magnetite also an excellent choice, offering high stiffness and good damping capability at low frequencies. It is shown by the results of this experiment that the effectiveness of MRE in reducing vibration can be increased by adding Magnetite, even in the limited mid-frequency range of 0 to 100 Hz.