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All Journal J@TI (TEKNIK INDUSTRI) Tengkawang : Jurnal Ilmu Kehutanan PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) Journal of Sylva Indonesiana Jurnal Kehutanan Papuasia (Journal of Papuasia Forestry) Jurnal Silva Tropika Jurnal Senopati : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Integrasi: Jurnal Ilmiah Teknik Industri
Siska Anggiriani
Politeknik Industri Furnitur Dan Pengolahan Kayu
Agriculture, Biological Sciences & Forestry Arts Humanities Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering

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Pengaruh Bleaching Terhadap Sifat Fisis Dan Perubahan Warna Kayu Pinus (Pinus merkusii Jungh et de Vriese) Terserang Blue Stain: The Effect of Bleaching on Physical Properties and Color Change of Blue Stain-Infected Pine Wood Anggiriani, Siska; Wijayanto, Arip; Nurhanifah, Nurhanifah; Muhamad, Soleh; Mulyosari, Desy; Widiyanto, Wahyu; Fitrianto, Taufik Ramadhan
Jurnal Silva Tropika Vol. 9 No. 1 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i1.44803

Abstract

ABSTRACT Pine is one of wood species that widely used as raw material for furniture making. Pine is easy to obtain, easy to work with, and has distinctive colors and patterns. However, pine is susceptible to being attacked by contaminating fungi (blue stain) on its surface. Blue stain attack wood surface is a problem that must be solved due to its effect on wood appearance. The idea to restrain this problem is bleaching process. Bleaching process carried out in this study used 25% sodium hypochlorite which was dissolved in water in a ratio of 1:2 (w/w). The bleaching process carried out has a significant effect on  moisture content (MC) of pine wood, but does not have a significant effect on its density. The MC value of pine wood after bleaching tends to increase compared to the untreated wood. The color change of pine wood after bleaching is indicated by the ΔE value (3.0 < ΔE < 6.0) which is classified as a moderate effect. The color of the control pine wood was originally slightly desaturated orange and after bleaching it became slightly desaturated orange   Keywords: bleaching, color change, finishing, furniture, pine.   ABSTRAK Pinus merupakan salah satu jenis kayu yang banyak digunakan sebagai bahan baku pembuatan furnitur. Hal ini karena Pinus  mudah mudah didapatkan, mudah dikerjakan, dan memiliki warna dan corak yang khas. Namun, Pinus rentan terserang jamur pengotor (blue stain) pada permukaannya. Serangan blue stain pada permukaan kayu merupakan permasalahan yang harus diatasi karena adanya seranagn blue stain dapat mempengaruhi penampilan kayu. Salah satu cara yang dapat dilakukan untuk mengatasi permasalahan tersebut adalah melakukan proses bleaching. Proses bleaching yang dilakukan pada penelitian ini menggunakan sodium hipoklorit 25% yang dilarutkan menggunakan air dengan perbandingan 1:2 (b/b). Proses bleaching yang dilakukan berpengaruh nyata terhadap kadar air (KA) kayu pinus, namun tidak berpengaruh nyata terhadap kerapatannya. Nilai KA kayu pinus setelah bleaching cenderung meningkat dibanding kontrolnya. Perubahan warna kayu Pinus setelah bleaching ditunjukkan dengan nilai ΔE (3,0 < ΔE < 6,0) yang tergolong pengaruhnya sedang. Warna pada kayu pinus control semula berwarna slightly desaturated orange dan setelah bleaching menjadi slightly desaturated orange.   Kata kunci: bleaching, finishing, furnitur, perubahan warna, pinus.
Redesain Kursi Kerja Pegawai berdasar Antropometri Pengguna Guna Meningkatkan Kenyamanan dan Produktivitas Fitrianto, Taufik Ramadhan; Prakoso, Galih; Nugroho, Alfani Risman; Afifah, Anshah Silmi; Anggiriani, Siska; Widiastuti, Retno
Integrasi: Jurnal Ilmiah Teknik Industri Vol 10 No 2 (2025): Integrasi : Jurnal Ilmiah Teknik Industri
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/integrasi.v10i2.434

Abstract

Duduk dalam waktu lama dan penggunaan kursi dengan desain yang kurang memadai menjadi penyebab utama ketidaknyamanan fisik dan gangguan muskuloskeletal (MSDs) di lingkungan kerja. Penelitian ini mengevaluasi efektivitas ergonomis kursi karyawan yang telah didesain ulang di Politeknik Industri Furnitur dan Pengolahan Kayu Kendal, dengan menyesuaikan data antropometri spesifik tenaga kerja. Desain ulang berfokus pada dimensi utama, seperti tinggi dudukan, kedalaman dudukan, dan sudut sandaran, untuk meningkatkan kenyamanan dan postur selama penggunaan yang berkepanjangan. Pengumpulan data dilakukan melalui observasi, kuesioner, dan wawancara terhadap 32 responden. Rapid Office Strain Assessment (ROSA) menunjukkan penurunan signifikan pada skor risiko ergonomis dengan rata-rata perbaikan hingga 3 poin, menandakan desain kursi baru secara efektif mengurangi potensi ketegangan muskuloskeletal. Penelitian ini menegaskan pentingnya intervensi ergonomis dalam meningkatkan kenyamanan dan produktivitas karyawan. Selain itu, hasil kuesioner menunjukkan bahwa kursi yang didesain ulang secara signifikan meningkatkan dukungan punggung (rata-rata skor 4,72) dan kenyamanan keseluruhan (4,09). Namun, beberapa aspek, seperti kedalaman dudukan (3,69), memerlukan penyempurnaan lebih lanjut untuk mengakomodasi dimensi tubuh yang beragam. Analisis korelasi Pearson menunjukkan hubungan negatif antara tinggi badan dan kepuasan (-0,603), menekankan pentingnya desain yang memperhatikan variabilitas antropometri.
Pengaruh Perlakuan Microwave terhadap Karakteristik Kayu Randu (Ceiba pentandra (L) Gaertn.: The Influence of Microwave Treatment on The Characteristics of Randu (Ceiba pentandra (L) Gaertn.) Wood Anggiriani, Siska; Nurhanifah, Nurhanifah; Sutiawan, Jajang
Jurnal Silva Tropika Vol. 6 No. 2 (2022): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jsilvtrop.v6i2.23765

Abstract

ABSTRACT Randu (Ceiba pentandra (L) Gaertn.) wood is one of the fast-growing species which has low density. Wood modification by microwave (MW) treatment were conducted to improve its quality. The aim of this work was to evaluate the effect of microwave treatment on the characteristics (physical properties, wood discoloration, and wettability) of Randu wood. Microwave treatment for 0.5 and 1 minute were applied for Randu wood. The evaluation of wood discoloration, wettability, and physical properties include moisture content, specific gravity, swelling, and anti-swelling efficiency (ASE) were measured.  Wood discoloration and wettability of untreated and treated sample were measured. The results showed that microwave treatment was reduce the swelling, wettability and cause discoloration. Microwave treatment not significantly affected moisture content and specific gravity of treated wood. Microwave treatment increased contact angle than untreated, and 0.5 minutes microwave treatment caused significant discoloration than 1 minutes microwave treatment and untreated sample. The MW treatment indicated to increase the hydrophobicity of Randu wood.   Keywords: discoloration, microwave, randu, wettability.   ABSTRAK Kayu randu (Ceiba pentandra (L) Gaertn.) merupakan salah satu jenis kayu cepat tumbuh yang memiliki kerapatan rendah. Modifikasi kayu dengan perlakuan microwave (MW) dilakukan untuk meningkatkan kualitasnya. Tujuan dari penelitian ini adalah untuk mengevaluasi pengaruh perlakuan microwave terhadap karakteristik (sifat fisik, perubahan warna kayu, dan keterbasahan) kayu Randu. Perlakuan microwave selama 0.5 dan 1 menit diaplikasikan pada kayu randu. Pengujian yang dilakukan yaitu perubahan warna kayu, keterbasahan, dan sifat fisis yang meliputi kadar air, berat jenis, pengembangan, dan anti-swelling efficiency (ASE). Hasil penelitian menunjukkan bahwa perlakuan microwave mengurangi pengembangan, keterbasahan dan menyebabkan perubahan warna. Perlakuan microwave tidak berpengaruh nyata terhadap kadar air dan berat jenis kayu. Perlakuan gelombang mikro meningkatkan sudut kontak dibanding kontrol, dan perlakuan microwave 0.5 menit menyebabkan perubahan warna yang signifikan dibanding microwave 1 menit dan tanpa perlakuan. Perlakuan MW dapat meningkatkan hidrofobisitas kayu randu.  Katakunci: keterbasahan, microwave, randu, perubahan warna.
Uji pembebanan statik meja kerja kantor dengan konstruksi pen-lubang dan alur-isian Rahmat, Bahtiar; Fitrianto, Taufik Ramadhan; Mulyosari, Desy; Nurhanifah, Nurhanifah; Anggiriani, Siska; Afifah, Anshah Silmi
Productum: Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) Vol 9, No 1 (2026)
Publisher : Institut Seni Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24821/productum.v9i1.17612

Abstract

An ergonomic work environment requires furniture to be compatible with the dimensions of the user's body in order to avoid musculoskeletal complaints and decreased productivity. A data-driven anthropometric design approach combined with structural simulation is a strategy to ensure both comfort and strength of the product. This study applies the Finite Element Method (FEM) to analyze the strength of a work table with a hole-and-groove construction before mass production. A combination of mahogany and plywood was chosen for cost efficiency, while the strength of the joints between components was the main focus of the evaluation. The simulation process included 3D modeling, material selection, boundary condition determination, loading in accordance with SNI 8781-2019, meshing, and analysis of results. The desk measured 1200×600×750 mm with four fixed support points on the legs. The results showed good structural performance in all tests. Stability and vertical strength tests showed that the stress and displacement were below the elastic limit of the material. Fatigue tests showed a damage level of only 1 percent, while drop tests resulted in a displacement of 1.55 mm without permanent deformation. Overall, the table design was deemed safe, stable, and suitable for production.
Design of student chair using local wood with ergonomic approach and finite element-based structural validation Fitrianto, Taufik Ramadhan; Rahmat, Bahtiar; Anggiriani, Siska; Mulyosari, Desy; Nurhanifah, Nurhanifah; Nugroho, Alfani Risman; Affandi, Muhammad Afif
Productum: Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) Vol 9, No 1 (2026)
Publisher : Institut Seni Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24821/productum.v9i1.17625

Abstract

This study presents the design and structural validation of an ergonomic student chair using locally sourced Indonesian wood species. The research integrates anthropometric analysis, computer-aided design, and Finite Element Method (FEM) simulations to ensure both comfort and mechanical reliability. Anthropometric data from Indonesian students determined key seating dimensions, while FEM analysis evaluated structural performance under static loading conditions. Four wood species—teak (Tectona grandis), mahogany (Swietenia macrophylla), pine (Pinus merkusii), and sonokeling (Dalbergia latifolia)—were compared based on stress distribution, total deformation, and factor of safety (FoS). All materials satisfied the minimum safety factor of 1.5, confirming adequate strength for classroom use. Sonokeling achieved the highest FoS (2.47), while pine offered the best efficiency index (22.6) when performance was normalized by cost. The results demonstrate that locally available wood can provide safe, ergonomic, and economically feasible alternatives to imported materials. This integrated ergonomic–engineering approach supports sustainable, affordable, and human-centered furniture design for educational environments.
Anthropometric-Based Ergonomic Assessment of Student Chairs to Prevent Musculoskeletal Discomfort Fitrianto, Taufik Ramadhan; Rahmat, Bahtiar; Anggiriani, Siska; Mulyosari, Desy; Nurhanifah, Nurhanifah; Nugroho, Alfani Risman; Affandi, Muhammad Afif
Jurnal SENOPATI : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Vol 7, No 2 (2026): Jurnal SENOPATI Vol 7, No 2 (in progress)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.senopati.2026.v7i2.8302

Abstract

Many students at Politeknik Industri Furnitur dan Pengolahan Kayu have reported musculoskeletal discomfort after prolonged sitting in classroom chairs, including lower back pain, neck stiffness, and shoulder tension. These complaints suggest that the existing chairs may not accommodate users’ anthropometric characteristics. This study aimed to evaluate the ergonomic compatibility of current student chairs and to redesign their dimensions based on anthropometric data to meet both national and international ergonomic standards. The research was conducted through three main stages: (1) identifying discomfort areas using the Nordic Body Map (NBM) questionnaire, (2) collecting key body measurements from male and female students, and (3) performing a mismatch analysis between anthropometric dimensions and chair parameters. The analysis revealed a high level of mismatch—particularly in seat height, depth, and backrest dimensions—which correlated with the prevalence of MSD complaints. A redesigned chair model was then proposed based on student anthropometry and evaluated against available standards. The redesigned dimensions significantly reduced mismatch rates for both male and female users, indicating improved ergonomic compatibility. Alignment with international standards further supports the potential of this design to enhance comfort and reduce musculoskeletal risks. However, despite its functional improvements, the new chair proportions may appear less visually balanced, necessitating further refinement in aesthetic and structural aspects before implementation.
Co-Authors Affandi, Muhammad Afif Anshah Silmi Afifah Arip Wijayanto Bahtiar Rahmat Dhian Juwitasari Fitrianto, Taufik Ramadhan Galih Prakoso, Galih Jajang Sutiawan Muhamad, Soleh Mulyosari, Desy Nugroho, Alfani Risman Nurhanifah Nurhanifah Nurhanifah Retno Widiastuti Sutiawan, Jajang Wahyu Widiyanto Wahyu Widiyanto, Wahyu