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Specta Journal of Technology

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Published by Institut Teknologi Kalimantan

ISSN : 25492713 EISSN : 26229099 DOI : https://doi.org/10.0610/specta.v2i3

Core Subject : Science, Social, Engineering,

Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Environmental Science

SPECTA journal is published by Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Teknologi Kalimantan, Balikpapann Indonesia. SPECTA is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in the field of Physics, Mathematics, Mechanical Engineering, Electrical Engineering, Chemical Engineering, Materials and Metallurgy, Civil Engineering, Industrial Engineering, Naval Engineering, Urban Planning, Informatics, Information System, Environmental Engineering, and Ocean Engineering. SPECTA accepts submission from all over the world, especially from Indonesia.

Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)

Articles 10 Documents

Search results for , issue "Vol. 5 No. 1 (2021): SPECTA Journal of Technology" : 10 Documents clear

Kriteria-Kriteria Pemancangan yang Mempengaruhi Pengambilan Keputusan pada Pemilihan Jenis Driven Pile dan Metode Pemancangan Oryza Lhara Sari; Andina Prima Putri; Christianto Credidi Septino Khala
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Pengambilan keputusan membuat praktisi berhadapan dengan berbagai kondisi yang mempengaruhi pemilihan jenis tiang dan metode pemancangan. Penelitian ini bertujuan untuk mengkaji kriteria-kriteria pemancangan yang mempengaruhi pemilihan jenis driven pile dan metode pemancangan yang optimal. Konseptual model disajikan sebagai model teoritis dari literature review yang dilakukan. Survei pendahuluan dilaksanakan dengan mengidentifikasi kriteria dengan wawancara kepada empat expert yang berpengalaman melakukan pekerjaan pemancangan pondasi. Kriteria yang telah diidentifikasi oleh expert digunakan untuk survei kuesioner. Survei kuesioner dilakukan kepada 45 responden praktisi yang pernah melakukan pekerjaan pemancangan pondasi di Balikpapan. Analisis yang digunakan untuk mengetahui kriteria yang berpengaruh adalah analisis deskriptif, uji nonparametrik (Kruskal-Wallis), uji validitas dan reliabilitas. Hasil mendapatkan tiga variabel utama yang meliputi kriteria pemancangan, jenis driven pile dan metode pemancangan. Enam kriteria pemancangan penentu yang didapatkan yaitu karakteristik tanah, kondisi lapangan, karakteristik bangunan, biaya, waktu dan pengalaman sebelumnya.

Comparative Study of Open Frame Structure Modeling with Diagonal Bracing at the Integrated Laboratory of Institut Teknologi Kalimantan Christianto Credidi Septino Khala; Andina Prima Putri; Oryza Lhara Sari
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Generally, brick wall (hebel) is considered as non-structural element, which never be counted to bear structural load. But, if carefully calculated, brick walls take part in structure load bearing. In the purpose of reducing the main structural element properties, the brick wall needs to be considered in bearing structural load. In this article, the brick walls modelled as compressive bracings. Using the structure analysis program, the model showed some significant differences in terms of internal force. From the analysis, the differences of moment, shear, axial and torsional force between open frame model (usual model, OF) and compressive bracing (CB) model were 38.17 kN.m; 58.03 kN; 181.75 kN dan 44.18 kN.m, respectively, where the first model had the bigger numbers than the latter model. Displacement of OF model was quite larger than CB model, with the value of difference was up to 85.35% for the X direction structures, and 70.83% for the Y direction. Final properties used for the design are smaller compared than original design, 30/60 to 40/60 for the beams, 50/50 for the columns with the different reinforcements 16-D22 for the second model compared to 20-D22 for the first one. The depth of slab on the second model was 180 mm, slightly smaller than the first model, 190 mm. It can be concluded that using compressive bracing model, structural properties of ITK Integrated Laboratory Building may greatly be reduced, compared to OF model.

Pembuatan Aplikasi Sinkronisasi Data Akademik dengan Feeder PDDIKTI Berbasis Web Service M. Gilvy Langgawan Putra; Sadriansyah Sadriansyah; Ahmad Maulana Fikri; Hendy Maulana Jaya Saputra; Brianto Rovi Harjanto; Dimas Saputra
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Setiap universitas ataupun Lembaga Pendidikan tinggi di Indonesia, termasuk Institut Teknologi Kalimantan wajib untuk memeperbarui informasi mengenai mahasiswa yang berkuliah. Untuk melakukan pembaruan informasi tersebut, Kementerian Riset, Teknologi, dan Pendidikan tinggi merilis aplikasi Feeder PDDIKTI untuk mempermudah administrasi pembaruan data mahasiswa. Institut Teknologi Kalimantan sebagai perguruan tinggi di Indonesia belum memiliki sistem basis data yang terintegrasi dengan Pangkalan Data Pendidikan Tinggi. Oleh karena itu, Dalam pengembangannya dilakukan dengan identifikasi masalah, studi literaur, analisis kebutuhan yang terdiri dari pembuatan use case diagram, Deskripsi use case, kebutuhan perangkat lunak, kebutuhan perangkat keras, kemudian tahapan desain dan arsitektur terdiri dari pemetaan data, proses data, struktur navigasi dan method web service. Selanjutnya dilakukan coding dan pengujian dengan black box, menghasilkan 2 fitur diujikan sukses.dibutuhkan perancangan dan installasi Feeder PDDIKTI. Hasil dari pengembangan aplikasi ini adalah berupa sistem informasi berbasi website dengan dua fitur, yakni fitur login dan fitur sinkronisasi. Fitur login memungkinkan pengguna untuk melakukan login, dan fitur sinkronisasi memungkinkan untuk memperbarui data atau menambahakan data pada Pangkalan Data Pendidikan Tinggi. Hasil pengujian terhadap fitur login dan fitur sinkronisasi adalah berhasil.

Analisa Tingkat Resiko Ergonomi Terhadap Keluhan MSDs Pada Pekerja Dengan Menggunakan Metode REBA Di PT. Indofood CBP Sukses Makmur Tbk Pekanbaru Muhammad Nur; Pandu Sadewa
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

PT. Indofood CBP Sukses Makmur merupakan perusahaan yang bergerak dibidang industri makanan yaitu memproduksi mi instan. Dilakukannya penelitian di PT. Indofood CBP Sukses Makmur dibagian gudang barang jadi, dimana aktivitas pekerja yang masih dilakukan secara manual dengan postur kerja membungkuk yang menyebabkan keluhan dari anggota tubuh yang ketika bekerja mengurangi kenyamanan pekerja. Penelitian ini menggunakan populasi berjumlah 9 orang pekerja di gudang barang jadi. Pengambilan data mengenai postur kerja akan dinilai dengan menggunakan metode Rapid Entire Body Assessment (REBA). Hasil penelitian dengan menggunakan metode REBA menunjukkan 2 postur kerja dengan level resiko “Sedang” dan 1 Postur kerja dengan level resiko “Tinggi”. Seluruh postur kerja di aktivitas pekerja menunjukkan bahwa belum adanya penerapan penilaian postur kerja menggunakan metode REBA, sebaiknya dari pihak perusahaan melakukan tindakan perbaikan postur kerja karyawan dengan menerapkan metode REBA sebagai upaya meningkatkan produktivitas karyawan dalam bekerja.

Analisis Perbandingan Produktifitas dan Efsiensi Pengiriman Material pada Sistem Aging dan Sistem Scheduling Route Menggunakan Analisis Produktifitas dan Data Envelopment Analysis (DEA) Indro Prakoso; M Baharuddin Wahit Tosaili; Tigar Putri Adhiana
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Productivity and efficiency are two main things that can be used as benchmarks for success from the Delivery section of the SCM department. Productivity is the main point in assessing whether the Delivery system in the warehouse is feasible or has not reached its target. In the last few periods after carrying out a track record of the historical data of the shipment of goods. It was found that in one week there were frequent deliveries to the same user drop point location, meaning that this could lead to waste & waste from inefficient work. In connection with that, a new system is implemented, the scheduling system, which is a delivery system for delivering material with a predetermined schedule every week. This research is intended to produce a productivity analysis that shows whether this new scheduling system can increase productivity and delivery efficiency when compared to an aging system or vice versa by using a productivity analysis methodology and efficiency level benchmarking using data envelopment analysis (DEA). The results of the aging system productivity analysis have a better value, namely 34%, while the scheduling system is 26%, but scheduling has a shorter distance so it can make savings. Meanwhile, in comparison to efficiency using benchmark factors, it is found that the aging system is more efficient with an optimum value of 1, and scheduling of 0.9855535 is considered inefficient.

Konstruksi Model Pengaruh Pertumbuhan Pengangguran terhadap Dinamika Angka Kriminalitas melalui Pemberian Kontrol Optimal Irma Fitria; Nur Hanifa; Annisa Rahmita Soemarsono; Kartika Nugraheni
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Pertumbuhan ekonomi yang melemah berdampak pada sektor ketenagakerjaan, salah satunya yaitu bertambahnya jumlah orang yang menganggur. Pengangguran adalah keadaan dimana seseorang ingin bekerja namun tidak mendapatkan pekerjaan. Penambahan jumlah orang yang menganggur dapat memicu semakin tingginya kasus kriminalitas. Oleh karena itu, diperlukan upaya pengendalian untuk menekan pertumbuhan pengangguran, sehingga tidak memicu penambahan kasus kriminalitas. Dalam penelitian ini, kontrol optimal yang diusulkan berupa kebijakan pemerintah untuk penyediaan lowongan pekerjaan bagi pengangguran. Metode yang digunakan untuk menyelesaikan permasalahan ini, yaitu Prinsip Minimum Pontryagin. Simulasi numerik diberikan untuk menunjukkan keefektifan pemberian kontrol sehingga dapat menurunkan jumlah orang yang menganggur dan jumlah pelaku kriminalitas.

A Study of the Effect of Zinc Organic Metal Composite Layers on the Frequency of Quartz Crystal Sensor Fifin Tresna Juwita; Fadli Robiandi
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

The performance, sensitivity, and corrosion protection on the QCM sensor requirement be improved to maximize the value. Therefore, the functional material coating was carried out. The addition of the polystyrene and ZnPc deposited using the vacuum evaporation method. This study intends to the morphology structure and effect of the coating, to improve performance through the annealing process based on the impedance value at QCM. The frequency measurement before and after the coating process was carried out with a variation of the deposition time, which is 1 minute 30 seconds, 1 minute 45 second, 2 minutes, 2 minute 20 seconds, and 4 minutes. The coating and annealing resulted from the surface structure of the QCM sensor are smooth, small porous, and homogeneous. In addition, the impedance to frequency graph indicates a low damping effect means the QCM sensor does not respond viscoelasticity.

Pendekatan alternatif dalam menghasilkan stability lobes diagram untuk memprediksi getaran chatter pada proses pemesinan berdinding tipis Agus Susanto
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Machining is widely used for finishing process of the entire manufacturing process chain. Machining process of thin plate, however, is not an easy task. This is because excessive vibration (chatter) can rise during operation. To predict the chatter vibration, a stability lobe diagram (SLD) is usually utilized which is strongly dependent on the frequency response function (FRF). This paper proposes an alternative approach for analyzing modal analysis by finite element method (FEM) to obtain FRF during machining thin-walled plate. The result showed that simulation result has good enough agreement to experimental result with slight differences caused by the assumed boundary conditions in the FEM process. This approach can be used to reduce the use of hammering tests and can be used to get FRF of multi stage working.

Perancangan Ulang Signage dan Wayfinding untuk Meningkatkan Brand Image pada Studi Kasus di Owabong Waterpark Anggis Rizky Wiyaringtyas; Donny Trihanondo; Siska Noviaristanti
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Owabong Waterpark is a water tourism object located in Purbalingga District, Central Java. With the title as the most complete water tourism in Central Java, the Owabong Waterpark brand is famous. However, this phenomenon is not supported by the existence of signage and wayfinding as visual identities and information media. The lack of visible signage and wayfinding as directional media and the inconsistency of signage and wayfinding designs make it difficult for visitors to find information. Currently, the existence of signage and wayfinding does not only function as a signpost that can only be appreciated or seen. More than that, for the company itself, innovation from signage and wayfinding can also function as a business medium that can increase company revenue. To create solutions to existing problems, signage and wayfinding designs were developed. The research was conducted using literature methods, observation, interviews, and questionnaires with the results of the Owabong Waterpark signage and wayfinding need a redesign. By carrying out in-depth research and planning a design concept that is mature and in accordance with the existing phenomena in Owabong Waterpark, it is hoped that it will be the right solution to respond to signage and wayfinding problems.

Effect of Current and Coating Time on the Layer Thickness and Corrosion Rate of Electroplated AISI 1045 Afira Ainur Rosidah; Vuri Ayu Setyowati; Miftahul Choir
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Corrosion mostly occurs on carbon steel which is applied for automotive components and household needs. This natural phenomenon is impossible to be avoided. However, it can be set by escalating its corrosion initiation time. Electroplating is a method that can be used to give protection to slower the corrosion initiation time by forming a layer on the specimen surface, additionally, this method is simple and low cost. One of the most commonly used metals for electroplating is nickel, nickel electroplating is suitable for automotive component coating. For these reasons, this study is focused on analyzing the effect of current and coating time on the layer thickness and corrosion rate of AISI 1045 carbon steel with nickel electroplating. The current variations used were 0.5; 1.0; and 1.5 A and the coating time variations were 5, 10, and 15 minutes. AISI 1045 was used as the cathode, nickel was as the anode, and nickel chloride was the electrolyte solution. The specimen with a current of 1.5 A and a coating time of 15 minutes shows the thickest coating and the lowest corrosion rate, with values of 0.0205 mm and 0.94 mpy, respectively. This study indicates that the increase of the current and coating time enhances the layer thickness and declines the corrosion rate.

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Contact Name
Syamsul Mujahidin

Contact Email
syamsul@lecturer.itk.ac.id

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+6285931379488

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spectajournal@itk.ac.id

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Ruangan LPPM Gedung A lantai 2, Kampus ITK, Jl Soekarno Hatta KM 15, Karang Joang, Balikpapan, Balikpapan Utara, KALTIM

Location
Kota balikpapan,

Kalimantan timur

INDONESIA

Abstract

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Syamsul Mujahidin

Contact Email syamsul@lecturer.itk.ac.id

Phone +6285931379488

Journal Mail Official spectajournal@itk.ac.id

Editorial Address Ruangan LPPM Gedung A lantai 2, Kampus ITK, Jl Soekarno Hatta KM 15, Karang Joang, Balikpapan, Balikpapan Utara, KALTIM

Location Kota balikpapan, Kalimantan timur INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Syamsul Mujahidin

Contact Email
syamsul@lecturer.itk.ac.id

Phone
+6285931379488

Journal Mail Official
spectajournal@itk.ac.id

Editorial Address
Ruangan LPPM Gedung A lantai 2, Kampus ITK, Jl Soekarno Hatta KM 15, Karang Joang, Balikpapan, Balikpapan Utara, KALTIM

Location
Kota balikpapan,

Kalimantan timur

INDONESIA