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All Journal Jurnal Fisika FLUX Info-Teknik Turbo : Jurnal Program Studi Teknik Mesin Jurnal Elemen Jurnal Pengabdian Al-Ikhlas Scientific Journal of Mechanical Engineering Kinematika JTAM ROTARY JMIO: Jurnal Mesin Industri dan Otomotif Journal of Industrial Engineering and Operation Management (JIEOM) Jurnal Taguchi : Jurnal Ilmiah Teknik dan Manajemen Industri
Akhmad Syarief
Lambung Mangkurat University
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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PENGARUH ALKALISASI HYBRID COMPOSITE BULU ITIK ALABIO DAN SERAT PURUN TIKUS TRHADAP KEAUSAN DAN KEKERASAN Akhmad Syarief; Dadang Aling Setiawan; Fadliyanur Fadliyanur
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.294

Abstract

South Kalimantan Province is the habitat for a type of plant known as Purun Tikus. This plant is traditionally used for handicrafts and serves as a habitat for Alabio ducks. Sodium hydroxide (NaOH) is an alkaline chemical compound that effectively removes and cleans residues in fibers. Therefore, this study investigates the composite materials reinforced with duck hair and Purun Tikus using an immersion alkalization method with NaOH. The objective of this research is to determine the effects of alkalization on a hybrid mixture of duck hair and Purun Tikus with a polyester matrix on wear and hardness properties, and to examine the influence of voids on perforated pores. The wear test was performed according to ASTM G99-04, and the hardness test followed the ASTM D-785 standard. Samples were prepared using the hand lay-up method with a composition of 78% polyester, 2% catalyst, and 20% reinforcement with a volume ratio of (10%:90%). The alkalization treatment times were set at 10, 20, 30, 40, 50, and 60 minutes using a 5% NaOH solution. The results indicated that the highest wear value was observed at the 10-minute alkalization time, while the lowest wear value was noted at the 60-minute alkalization time. Conversely, the highest hardness value was obtained at the 60-minute alkalization time, and the lowest at the 10-minute alkalization time. Therefore, alkalization time significantly affects the wear, hardness, and void properties of the composite materials.
Pengaruh fraksi volume dan orientasi sudut serat komposit polyester-serbuk kayu ulin (eusideroxylon zwageri)-kawat kasa terhadap kekuatan bending Akhmad Syarief; Taufik Irfansyah Sofian; Akhmad Ghiffary Budianto; Andy Nugraha
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2163

Abstract

A composite is a material formed from the combination of two or more constituent materials through an inhomogeneous mixture. The ironwood waste has less economic value, which makes the authors interested in conducting research using mosquito nets and particle composite ironwood waste. Which is to find out the effect of volume fraction and angle orientation of the fiber composite polyester-ulinwood powder (Eusideroxylon zwageri)-mosquito wire on the bending strength. The bending test was carried out using the ASTM D-790 standard with the three point bending test method and the composite was manufactured using the hand lay-up method with the particle composition: polyester: 10%: 90%, 15%: 85%, 20%: 80%, and 25%: 75%. The results obtained in the comparison of the composition of less ironwood powder, a finer mesh size with an orientation angle of 45°, and mosquito wire show the highest bending strength and high deformation ability (ductile), and the addition of mosquito net as one of the composite specimen fibers of polyester resin does not increase significant bending strength but can reduce the deformability reduction effect.
EFFECT OF NaOH AND Ca(OH)₂ ALKALI TREATMENT TIME ON PURUN TIKUS FIBER PROPERTIES Akhmad Syarief; Valentino Krisna Mukti; Iphan Radam; Muhammad Nizar Ramadhan; Akhmad Ghifary Budianto; Fadlyannur Fadlyannur; Aulia Aufa Ramadasari; Rizqi Ilmal Yaqin
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 1 (2026): SJME Kinematika June 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i1.875

Abstract

Purun tikus fiber (Eleocharis dulcis) is a promising natural fiber for environmentally friendly composite reinforcement due to its abundant availability and relatively high cellulose content. However, the presence of lignin, hemicellulose, and surface impurities can reduce interfacial bonding and mechanical performance. This study investigated the effect of alkali treatment type and immersion time on the mechanical and morphological properties of single purun tikus fibers. The fibers were treated in 5 wt.% NaOH and Ca(OH)₂ solutions for 3, 6, and 9 h, with three specimens prepared for each treatment variation. Mechanical characterization included single-fiber tensile testing based on ASTM C1557 to determine tensile strength, strain, and elastic modulus, pull-out testing to evaluate interfacial shear strength, and field emission scanning electron microscopy (FESEM) analysis to observe surface morphology changes. The results showed that the the most favorable treatment condition was obtained using NaOH for 3 h. Under this condition, the interfacial shear strength increased from 2.858 MPa to 3.394 MPa, corresponding to an improvement of approximately 18.8%, while the tensile strength was maintained at 0.681 MPa, close to that of the untreated fiber (0.685 MPa). In contrast, longer immersion times of 6 and 9 h reduced the tensile strength and interfacial performance, indicating fiber degradation due to excessive alkalization. FESEM observations confirmed that short-duration alkali treatment improved surface cleanliness and roughness, whereas prolonged treatment caused cracks and structural damage. These findings indicate that controlled NaOH treatment is more effective than Ca(OH)₂ in improving the suitability of purun tikus fiber as a composite reinforcement.
Analisis Pengaruh Variasi Waktu Perlakuan Alkalisasi KOH (Kalium Hidroksida) Terhadap Sifat Mekanik Serat Tunggal Purun Tikus (Eleocharis Dulcis) Akhmad Syarief; Iphan Fitrian Radam; Muhammad Nizar Ramadhan; Akhmad Ghiffary Budianto; Fadliyanur; Aulia Aufa Ramdhasari
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 1 (2026): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i1.4569

Abstract

The utilization of purun tikus (Eleocharis dulcis) fiber as a reinforcement material for composites has considerable potential due to its high cellulose content. However, the hydrophilic nature of this fiber limits its interfacial bonding with the matrix, thus requiring chemical treatment to enhance its performance. This study aims to analyze the effect of varying alkali treatment durations using KOH solution on the mechanical properties of single purun tikus fibers. The alkali treatment was conducted by immersion for 3, 6, 9, and 12 hours. Mechanical tests included tensile and pull-out tests to evaluate tensile strength, elongation, elastic modulus, and interfacial shear strength (IFSS). The results showed that treatment for 3 hours provided the most significant improvement, with tensile strength reaching 75.25 MPa, elastic modulus of 12,137.5 MPa, and IFSS of 13.78 MPa. This improvement is attributed to the removal of lignin and hemicellulose, which enhanced fiber–matrix interfacial bonding. Conversely, longer treatment durations led to cellulose degradation and decreased mechanical performance. Therefore, the optimum alkali treatment duration using KOH for purun tikus fibers is 3 hours, which yields maximum improvements in mechanical strength and interfacial bonding quality.
PERANCANGAN MESIN PENGOLAH SERAT DAUN NANAS (ANANAS COMOSUS L) Akhmad Syarief; Krisna Enos Sukoco
JTAM ROTARY Vol 8, No 1 (2026): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v8i1.18208

Abstract

Pengolahan serat daun nanas masih didominasi oleh metode manual sehingga kurang efisien dari segi waktu dan kapasitas produksi. Penelitian ini bertujuan untuk merancang mesin pengolah serat daun nanas (Ananas comosus L.) serta mengevaluasi kelayakan mekanisnya melalui perhitungan analitik dan simulasi metode elemen hingga (Finite Element Analysis/FEA). Komponen utama yang dirancang meliputi motor listrik, sistem transmisi V-belt dan pulley, poros, mata pisau, serta rangka mesin. Mesin menggunakan motor berdaya 1,5 kW dengan putaran 1450 rpm yang menghasilkan putaran poros sebesar 614 rpm. Hasil simulasi menunjukkan bahwa tegangan Von Mises maksimum pada poros sebesar 10,2 MPa dengan perpindahan 0,004 mm dan faktor keamanan 5,19. Pada rangka, tegangan maksimum sebesar 9,66 MPa dengan perpindahan 0,150 mm yang menunjukkan kestabilan struktur yang baik. Mesin memiliki kapasitas pengolahan sebesar 17,5 kg/jam dengan 12 mata pisau. Hasil ini menunjukkan bahwa mesin yang dirancang memenuhi kriteria kekuatan dan keamanan serta layak secara teknis untuk meningkatkan efisiensi pengolahan serat daun nanas. The processing of pineapple leaf fibers is predominantly carried out manually, resulting in low efficiency in terms of processing time and production capacity. This study aims to design a pineapple leaf fiber processing machine (Ananas comosus L.) and evaluate its structural feasibility using analytical calculations and finite element analysis (FEA). The design includes key components such as an electric motor, V-belt and pulley transmission system, shaft, cutting blades, and supporting frame. The machine utilizes a 1.5 kW motor operating at 1450 rpm, producing a shaft speed of 614 rpm. Simulation results show that the maximum Von Mises stress on the shaft is 10.2 MPa with a displacement of 0.004 mm and a safety factor of 5.19. The frame exhibits a maximum stress of 9.66 MPa and a displacement of 0.150 mm, indicating adequate structural stability. The machine achieves a processing capacity of 17.5 kg/h using 12 cutting blades. These results confirm that the designed machine meets mechanical safety criteria and is technically feasible to improve the efficiency of pineapple leaf fiber processing.
Analisa Pengaruh Metode Pengurangan Kadar Air terhadap Kualitas Pemipilan Jagung menggunakan Mesin Pemipil Type Spiral Rotary Aswar Aswar; Simon Parekke; Ichsan Ristiawan; Zulkarnain Arifin; Muhammad Fathirahman; Dwilma Shopie; Bambang Surono; Akhmad Syarief
TURBO [Tulisan Riset Berbasis Online] Vol 14 No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4539

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh pengurangan kadar air terhadap kualitas pemipilan jagung menggunakan mesin pemipil tipe spiral rotary. Jagung hibrida Bima 9 diuji dengan empat perlakuan pengeringan yang berbeda, yaitu tanpa pengeringan (S0), dijemur selama 8 jam (S1), dioven selama 1 jam pada suhu 90°C (S2), dan dioven selama 2 jam pada suhu 90°C (S3). Sampel jagung dipipil menggunakan mesin pemipil tipe spiral rotary, dan hasil pemipilan dianalisis berdasarkan efisiensi mesin, kualitas pemipilan, dan kerusakan biji. Hasil penelitian menunjukkan bahwa pengurangan kadar air meningkatkan efisiensi mesin dan kualitas pemipilan, dengan kadar air 18.3% (S3) menghasilkan rata-rata efisiensi mesin tertinggi sebesar 85% dan pemipilan yang bersih, meskipun dengan sedikit kerusakan pada biji. Kadar air yang lebih tinggi, seperti pada S1 (24.4%), menghasilkan efisiensi mesin yang rendah dan banyak biji yang tertinggal pada tongkol. Penelitian ini menyarankan bahwa kadar air optimal untuk pemipilan jagung menggunakan mesin pemipil spiral rotary adalah sekitar 18–22%. Temuan ini memberikan kontribusi dalam meningkatkan efisiensi pemipilan jagung di industri pengolahan pakan ternak.
Co-Authors A’yan Sabitah Abdul Ghofur Achmad Azhar Basyir Ade Azhari Rahmatuloh Ahmad Ramadan Aji Nihin Akhmad Ghifary Budianto Akhmad Ghiffary Budianto Akhmad Maulana Gumai Akhmad Wahyudi Akhmad Yafie Andy Nugraha Andy Nugraha Apip Amrullah Aswar Aswar Aulia Aufa Ramadasari Aulia Aufa Ramadhasari Aulia Aufa Ramdhasari Bagus Lutfiwijaya Baramsyah Baramsyah Candra Dwi Putra Dadang Aling Setiawan Defrihans Galang P Defrihans Galang Putranto Dhanu Suryanta Dhanu Suryanta Suryanta Dwi Suci Adianto Dwilma Shopie Fadliyanur Fadliyanur Fadliyanur Fadliyanur Fadliyanur Fadlyannur Fadlyannur Hansen Rivaldo Napitulu Hansen Rivaldo Napitupulu Ichsan Ristiawan Ichwan Noor Ardiyat Iphan Fitrian Radam Iphan Radam Isworo, Hajar Krisna Enos Sukoco Lukmanul Hakim Luqmanul Hakim Maidi Maidi Mastiadi Tamjidillah Ma’ruf Ma’ruf Misbachudin Misbachudin Moh. Sulhan Muhammad Ainur Rahman Muhammad Amin Muhammad Arzy Satria Muhammad Fathirahman Muhammad Nizar Ramadhan Muhammad Nizar Ramadhan Nanda Dwiguna R.M.B Agung E.W Rangga Mahesa Ricky Indriyanto Ripal Anugrahto Rizqi Ilmal Yaqin Sabitah, A'yan Sigit Mujiarto Simon Parekke Surono, Bambang Taufik Irfansyah Sofian Tumanggor, Agustina Hotma Uli Valentino Krisna Mukti Yopi Riyanto Yudistira Bayu Setiambodo Zulkarnain Arifin