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All Journal J@TI (TEKNIK INDUSTRI) Tengkawang : Jurnal Ilmu Kehutanan PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) Jurnal Silva Tropika Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Senopati : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Integrasi: Jurnal Ilmiah Teknik Industri
Fitrianto, Taufik Ramadhan
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PROSES BLEACHING: IMPLIKASINYA PADA PERUBAHAN WARNA DAN SIFAT FISIS KAYU KARET (Hevea Brasiliensis) TERKENA BLUE STAIN Nurhanifah, Nurhanifah; Anggiriani, Siska; Muhamad, Soleh; Wijayanto, Arip; Mulyosari, Desy; Fitrianto, Taufik Ramadhan; Widiyanto, Wahyu
Tengkawang : Jurnal Ilmu Kehutanan Vol 14, No 2 (2024): TENGKAWANG : JURNAL ILMU KEHUTANAN
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jt.v14i2.79136

Abstract

Blue stain can cause discoloration of wood.  This  causes the selling price of wood affected by blue stain to decrease  in the market,  especially  if it  is used  as raw material for furniture. One type of wood that is commonly used to make furniture but is easily affected by blue stain is rubber wood. Effort that can  be made  to overcome this problem are by bleaching the wood attacked by blue stain. Previous research has  been carried out  on pine wood with various bleaching compositions. The best results in terms of physical properties and color change  were obtained in 25% sodium hypochlorite treatment with a water ratio of 1:2. Therefore, it is necessary to conduct similar studies to analyze the effect of the bleaching process using 25% sodium hypochlorite on the discoloration and physical properties of rubber wood. In this research, rubber wood  was treated  with bleaching with  a composition of  25% sodium hypochlorite:water 1:2. The results  obtained  showed that the wood  after  the bleaching process  experienced  an increase in brightness and a color difference compared to the control. Apart from that, the moisture content value also increases after the bleaching process.Keywords: bleaching, blue stain, rubber wood, sodium hypochlorite.AbstrakJamur pewarna (blue stain) dapat menyebabkan perubahan warna pada kayu. Hal tersebut mengakibatkan penurunan harga jual kayu yang terserang blue stain, terutama jika digunakan sebagai bahan baku furnitur. Salah satu jenis kayu yang sering dimanfaatkan untuk pembuatan furnitur namun mudah terserang blue stain adalah kayu karet. Upaya yang dapat dilakukan untuk mengatasi masalah tersebut adalah dengan melakukan proses bleaching pada kayu yang terserang blue stain. Penelitian sebelumnya telah dilakukan pada kayu pinus dengan berbagai komposisi bahan bleaching, dan hasil terbaik dari segi sifat fisik dan perubahan warna diperoleh pada perlakuan sodium hipoklorit 25% dengan perbandingan air 1:2. Oleh karena itu, perlu dilakukan penelitian serupa untuk menganalisis pengaruh proses bleaching menggunakan sodium hipoklorit 25% terhadap perubahan warna dan sifat fisis kayu karet. Hasil yang diperoleh menunjukkan bahwa kayu karet setelah proses bleaching mengalami peningkatan kecerahan dan perbedaan warna dibandingkan kontrol. Selain itu, nilai kadar air juga meningkat setelah proses bleaching.Kata kunci: pemutihan, jamur pewarna, kayu karet, sodium hipoklorit.
Evaluation of Office Chairs to Enhance Comfort and Reduce Musculoskeletal Risk in Sedentary Work Environments Fitrianto, Taufik Ramadhan; Prakoso, Galih; Nugroho, Alfani Risman; Afifah, Anshah Silmi; Anggiriani, Siska; Widiastuti, Retno
Jurnal SENOPATI : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Vol 6, No 2 (2025): Jurnal SENOPATI Vol 6, No 2
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.senopati.2025.v6i2.6750

Abstract

This study evaluates the effectiveness of an ergonomically redesigned office chair, tailored to meet the anthropometric needs of employees. It addresses common issues associated with prolonged sitting, such as musculoskeletal discomfort and fatigue, which are prevalent in sedentary work environments. Utilizing anthropometric data from prior studies, the redesign incorporates modifications in key chair dimensions—such as seat height, seat depth, and backrest height—to enhance user comfort and reduce physical strain. The ROSA (Rapid Office Strain Assessment) tool was employed to assess posture and ergonomic risk for both the old and redesigned chairs. Findings indicate a significant improvement in ergonomic support and comfort with the new design, supported by a statistically significant reduction in ROSA scores, as confirmed through a paired sample t-test. Although the redesign effectively enhances comfort, further improvements are recommended, including adjustable lumbar support and backrest flexibility. This study underscores the importance of ergonomic adaptations in office furniture to support diverse body types and reduce occupational health risks.
Evaluasi Pelaksanaan Training Penggunaan Software Solidworks bagi Karyawan di Industri Furnitur. Fitrianto, Taufik Ramadhan; Rahmat, Bahtiar; Widiyanto, Wahyu; Nurmadina, Nurmadina; Ma'wa, Safarah Putri
Reswara: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 2 (2025)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v6i2.6611

Abstract

Keterbatasan kompetensi dalam pemanfaatan perangkat desain digital masih menjadi tantangan utama di sektor industri furnitur, khususnya bagi industri skala kecil dan menengah. Di tengah tuntutan pasar terhadap desain yang presisi, efisiensi produksi, dan adaptasi terhadap teknologi manufaktur modern, pelatihan teknis dapat menjadi langkah efektif untuk menjawab kesenjangan keterampilan tersebut. Studi ini mengevaluasi efektivitas program pelatihan SolidWorks yang diselenggarakan di CV Mebel Internasional. Dirancang untuk meningkatkan kompetensi karyawan dalam menggunakan perangkat lunak desain parametrik untuk kebutuhan manufaktur furnitur. Pelatihan ini diikuti oleh 15 peserta yang terdiri atas pegawai tetap, tenaga lepas, dan mahasiswa magang, dengan metode yang menggabungkan sesi teori dan praktik untuk mengisi materi keterampilan dalam pemodelan 3D, pembuatan gambar teknik, serta perakitan komponen furnitur. Hasil pelatihan menunjukkan peningkatan signifikan sebesar 71% dalam keterampilan teknis peserta, sebagaimana ditunjukkan oleh skor post-test yang lebih tinggi dibandingkan dengan skor pre-test. Umpan balik yang diberikan peserta memberikan penilaian tinggi terhadap relevansi materi pelatihan (4,23) dan tingkat keterlibatan dalam pelatihan (4,22), meskipun masih terdapat catatan perbaikan pada aspek fasilitas pelatihan (3,02) dan cakupan fitur-fitur lanjutan dari SolidWorks. Rekomendasi untuk pelatihan di masa mendatang mencakup peningkatan dukungan logistik, perpanjangan durasi sesi pelatihan, serta penyampaian materi yang lebih menyeluruh terkait fitur-fitur kompleks SolidWorks
EVALUATION OF OFFICE CHAIR DESIGN FROM ERGONOMIC AND ANTHROPOMETRIC PERSPECTIVES Fitrianto, Taufik Ramadhan; Rahmat, Bahtiar; Nugroho, Alfani Risman; Prakoso, Galih; Afifah, Anshah Silmi; Anggiriani, Siska; Juwitasari, Dhian
J@ti Undip: Jurnal Teknik Industri Vol 20, No 3 (2025): September 2025
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jati.20.3.148-154

Abstract

Workplace seating that does not match user anthropometry often leads to discomfort and musculoskeletal disorders (MSDs). This study evaluates the office chairs used at the Politeknik Industri Furnitur dan Pengolahan Kayu Kendal by combining discomfort analysis and anthropometric mismatch assessment. Thirty-two employees (16 males, 16 females) participated, completing the Nordic Body Map (NBM) questionnaire and providing seated anthropometric measurements. The NBM results revealed that lower back discomfort was the most common complaint, particularly among female respondents, who also reported higher discomfort in the neck, shoulders, and upper back. Mismatch analysis confirmed severe incompatibilities between existing chair dimensions and user anthropometry, with seat height (100% mismatch for both genders) and seat depth (94% for men, 88% for women) as the most problematic. Based on these findings, a redesigned chair was developed, lowering seat height by 30 mm and reducing seat depth by 66 mm, alongside adjustments to backrest and armrest dimensions. Comparison with Indonesian (SNI) and international ergonomic standards (ISO 9241-5, BIFMA G1, EN 1335-1) showed that the redesign falls within recommended ranges. The study demonstrates how anthropometry-based redesign can reduce mismatch and improve comfort, providing practical guidance for the local furniture industry.
Pengaruh Proses Bleaching Terhadap Finishing Kayu Pinus Dan Kayu Karet Terserang Blue Stain: The Effect of Bleaching Process on Finishing of Pine Wood and Rubber Wood Attacked by Blue Stain Mulyosari, Desy; Wijayanto, Arip; Muhamad, Soleh; Nurhanifah, Nurhanifah; Anggiriani, Siska; Fitrianto, Taufik Ramadhan; Widiyanto, Wahyu
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.v9i1.44692

Abstract

ABSTRACT One of the problems faced by the furniture industry is the attack of coloring fungi or what is commonly called blue stain. The attack of coloring fungi causes color changes so that the appearance of the wood decreases. The bleaching process is one way that can be done to overcome the attack of blue stain. The bleaching process in the industry uses the chemical white agent 250 (WA-250). However, research related to the effect of the bleaching process on the finishing of pine wood and rubber wood attacked by blue stain has not been carried out. This study aims to determine the effect of the bleaching process on the finishing of pine wood and rubber wood attacked by blue stain. Finishing tests include testing the adhesion of the finishing layer (cross cut test) referring to ASTM D 3359, flexibility testing is carried out with a coin test, and hardness testing refers to ASTM D 3363. The results of this study are that the bleaching process does not affect the finishing process on pine wood and rubber wood attacked by blue stain, both those treated with bleaching and those without bleaching treatment, which are included in the same finishing quality category. Based on the adhesion test, it is included in class 4B (Good) and its flexibility gets a value of 5 (very good), while the hardness of the finishing layer is in the less category.   Keywords: bleaching, blue stain, finishing, pine wood, rubber wood   ABSTRAK Permasalahan yang dihadapi oleh industri furnitur salah satunya adalah serangan jamur pewarna atau yang biasa disebut blue stain. Serangan jamur pewarna tersebut menyebabkan perubahan warna sehingga terjadi penurunan penampilan kayu. Proses bleaching merupakan salah satu cara yang dapat dilakukan untuk mengatasi adanya serangan blue stain. Proses bleaching pada industri menggunakan bahan kimia white agent 250 (WA-250). Namun, penelitian terkait pengaruh proses bleaching pada finishing kayu pinus dan kayu karet terserang blue stain belum dilakukan. Penelitian ini bertujuan mengetahui pengaruh proses bleaching terhadap finishing pada kayu pinus dan kayu karet yang terserang blue stain. Pengujian finishing meliputi pengujian daya lekat lapisan finishing (cross cut test) mengacu pada ASTM D 3359, pengujian fleksilbilitas dilakukan dengan coin test, dan pengujian kekerasan mengacu pada ASTM D 3363. Hasil penelitian ini adalah proses bleaching tidak mempengaruhi proses finishing pada kayu pinus dan kayu karet yang terserang blue stain baik yang diberi perlakuan bleaching maupun tanpa perlakuan bleaching masuk dalam kategori kualitas finishing yang sama. Berdasarkan uji daya lekat termasuk pada kelas 4B (baik) dan fleksibilitasnya memperoleh nilai 5 (sangat bagus), sedangkan kekerasan lapisan finishingnya kategori kurang. Kata kunci: bleaching, blue stain, finishing, kayu karet, kayu pinus
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.
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.
Co-Authors Affandi, Muhammad Afif Anggiriani, Siska Anshah Silmi Afifah Arip Wijayanto Bahtiar Rahmat Galih Prakoso, Galih Juwitasari, Dhian Ma'wa, Safarah Putri Muhamad, Soleh Mulyosari, Desy Nugroho, Alfani Risman Nurhanifah Nurhanifah Nurmadina, Nurmadina Retno Widiastuti Wahyu Widiyanto Wahyu Widiyanto, Wahyu