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Experimental Study of Pressure Deformation on Honeycomb Structures With Variations in Hexagonal Size Tested Static Study Of Pressure deformation Experiments On Beehive Structure With Hexagonal Size Variations Tested Static Sudirman Lubis; Chandra A. Siregar; Irpansyah Siregar; Edi Sarman Hasibuan; Munawar A. Siregar; Wawan S. Damanik
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 3 No. 1 (2022): May 2022
Publisher : CERED Indonesia Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.079 KB) | DOI: 10.53695/injects.v3i1.650

Abstract

Since ancient times, humans have tried to create new materials that are strong, rigid, lightweight and inexpensive. The honeycomb structure is a man-made material that has a honeycomb geometry to minimize the amount of material used, to achieve a minimum weight so that a light mass is obtained for the construction. This honeycomb structure is commonly used in aerospace applications, transportation, F1 racing and many other industries. In general, the purpose of this research is to determine the level of deformation, stress-strain that occurs in the honeycomb structure which is tested statically in compression. The honeycomb is made using aluminum material with a thickness of 0.4 mm and then formed with varying hexagonal sizes, namely 2 mm, 4 mm and 6 mm. This compression test is carried out using a Universal Testing Machine with 2 positions, namely horizontal and vertical. The specimen is pressed until it finds a broken point that is visible on the graph. The results obtained from this compressive test are in the form of deformation values and the maximum force acting on the specimen. From the results of the comparison of hexagonal size variations, it can be concluded that the larger the size of the honeycomb hexagon, the greater the deformation that occurs
Bimtek Dan Penyerahan Alat Penyapu Bidang Datar Gerak Mekanik Di Mesjid Taqwa Muhammadiyah Ranting Kedai Durian Cabang Medan Johor Elvy Sahnur Nasution; Ahmad Marabdi Siregar; Chandra A. Siregar; Rizki Efrida; Iqbal Raihan; Mirzal Lubis
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 4 No. 3 (2023): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v4i3.930

Abstract

Di Mesjid Taqwa Muhammadiyah Ranting Kedai Durian/Titi kuning, Cabang Medan Johor Petugas kebersihan masih menggunakan cara yang manual untuk membersihkan sampah. Sehingga merekapun mengalami kesulitan dalam pembersihan sampah setiap harinya. Dibutuhkan waktu yang lama dan energi yang banyak dari petugas kebersihan. Dengan suatu alat yang bekerja secara mekanis melakukan kegiatan menyapu dan mengumpulkan sampah dan dedaunan, dapat memudahkan dan meringankan pekerjaan petugas kebersihan, pelaksanaan dimulai dengan pengadaan alat sapu pembersih mekanik, menyusun rincian bimbingan teknis (BIMTEK), menjadwalkan kegiatan BIMTEK yang meliputi penjelasan cara kerja alat, simulasi dan praktek menggunakan alat, penjelasan perawatan alat, serta penyerahan alat kepada pengurus PRM dan Pengurus Mesjid taqwa kedai durian.