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Optimasi Parameter Pemesinan Untuk Minimasi Keausan Pahat Pada Pembubutan Baja Karbon Rendah Fahrizal, Fahrizal; Suprapto, Edy; ., Priyono; ., Basri
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 10 No. 1 (2022)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v10i1.41418

Abstract

AbstrakMetode optimasi merupakan salah satu metode yang digunakan untuk pengambilan keputusan dengan fungsi tujuan minimasi atau maksimasi. Optimasi kecepatan potong, kedalaman potong, dan gerak makan mesin bubut bertujuan untuk mencari respon yang optimal dengan melakukan kombinasi antar parameternya. Penelitian ini bertujuan untuk mendapatkan kombinasi parameter pemotongan optimal untuk meminimalkan keausan pahat pada proses pembubutan baja karbon rendah. Tujuan penelitian selanjutnya adalah mendapatkan urutan parameter pemotongan yang berpengaruh signifikan terhadap minimasi keausan pahat. Mesin bubut yang digunakan dalam penelitian adalah HMT type L17, sedangkan pahat bubut dari bahan HSS (High Speed Steel). Penelitian dilaksanakan Laboratorium Pemeliharaan dan Pengujian Material Politeknik Negeri Kupang. Optimasi parameter pemotongan menggunakan metode Taguchi dengan matriks orthogonal L9(33). Persentase kontribusi masing-masing parameter menggunakan ANOVA (Analysis of Variance). Hasil penelitian diperoleh bahwa keausan pahat minimal diperoleh pada kombinasi jumlah putaran 180 rpm, kedalaman potong 1,5 mm, dan gerak makan 0,8 mm/menit.   Berdasarkan hasil analisis variasi diperoleh kontribusi setiap faktor terhadap keausan pahat, masing-masing gerak makan memberikan kontribusi terbesar yaitu 35%, kemudian disusul kedalaman potong 10%, dan faktor kecepatan potong tidak memberikan kontribusi.Kata kunci: Parameter pemotongan, Metode Taguchi, ANOVAAbstractOptimization is one of the methods used for decision making with the objective function of minimization or maximization. The optimization of cutting speed, depth of cut, and feeding of turning aim to find the optimal response by combining the parameters. This study aims to obtain the optimal combination of cutting parameters to minimize tool wear in the low carbon steel turning process. The purpose of further research was to obtain a sequence of cutting parameters that have a significant effect on minimizing tool wear. The lathe used in this research is HMT type L17, while the lathe is made of HSS (High Speed Steel). The research was carried out at Kupang State Polytechnic Materials Testing and Maintenance Laboratory. Optimizing the cutting parameters used taguchi method with an orthogonal matrix L9(33). The percentage contribution of each parameter used ANOVA (Analysis of Variance). The results showed that minimal tool wear was obtained at a combination of 180 rpm rotation, 1.5 mm depth of cut, and 0.8 mm/minute of feeding. Based on the results of the analysis of variation, it was found that the contribution of each factor to tool wear, i.e. feeding gave the largest contribution, namely 35%, followed by the depth of cut 10%, and the cutting speed did not contribute.Keywords : Cutting parameters, Taguchi method, ANOVA DAFTAR PUSTAKAAriani, D.W. (2003). Pengendalian Kualitas Statistik Pendekatan Kuantitatif dalam Manajemen Kualitas. Yogyakarta: Penerbit AndiApreza, S., Kurniawan, Z. & Subhan, M. (2017). Optimasi Kekasaran Permukaan Proses Pembubutan Baja ST. 42 dengan Menggunakan Metode Taguchi.  Jurnal Manutech, 9(1): 74-85Chukwu, W.I.E. & Augustine, S. (2016). Optimization of Cutting Parameters of Turning Process in Engineering Machining Operation Using a Geometric Programing Approach. International Journal of Advanced Engineering Research and Technology, 4(11): 335-351Djami, R.J. & Sunaryo. (2014). Metode PCR-TOPSIS untuk optimasi Taguchi Multirespon. Jurnal Statistika, 2(1): 46-55Giyatno (2009). Optimasi Parameter Proses Pemesinan terhadap Keausan Pahat dan Kekasaran Permukaan Benda Hasil Proses CNC Turning dengan Menggunakan Metode Taguchi. Tesis tidak diterbitkan. Semarang: Prodi Teknik Mesin Universitas DiponegoroGupta, M., & Kumar, S. (2013). Multi-Objective Optimization of Cutting Parameters in Turning Using Grey Relation Analysis. International Journal of Industrial Engineering Computations, 4(4): 547-558Mahendra, R.A., Anggara, M.R.A., Kapel, K.E. & Miftahuddin, A.M. (2020). Analisa Efektifitas Uji Kekasaran Permukaan Baja ST 42 dengan Variabel Mekanik Mesin dengan Metode Taguchi. Jurnal JMMME, 1(1): 5-8Nakaminami, M., Tokuma, T., Moriwaki, T., & Nakamoto, K. (2007). Optimal Structure Design Methodology for Compound Multiaxis Machine Tool-I-Analysis of Requirements and Specification. Paper Manufacturing Technology Department. MORI SEIKI CO. LTDPrasetyo, A.B. (2015). Aplikasi Metode Taguchi pada Optimasi Parameter Permesinan terhadap Kekasaran Permukaan dan Keausan Pahat HSS pada Proses Bubut Material ST 37. Mekanika, 13(2): 86-97Pawanr, S., Garg, G.K., & Routroy, S. (2019). Multi-objective optimization of machining parameters to minimize surface roughness and power consumtion using TOPSIS. Procedia 7th CIRP Global Web Conference, 86: 116-120Rochim, T. (1993). Teori dan Teknologi Proses Pemesinan. Bandung: Institut Teknologi BandungSudjana. (1991). Desain dan Analisis Eksperimen. Bandung: Penerbit TarsitoSchey, J.A. (2009). Proses Manufaktur. Edisi Ketiga. Yogyakarta: Penerbit AndiSriyanto, Faisal, & Parkhan, A. (2015). Pengaruh Geometri Pahat Bubut HSS terhadap Nilai Kekasaran Permukaan dan Keausan Pahat Proses Bubut dengan Metode Taguchi. Jurnal Teknika, 13: 35-46Soejanto, I. (2019). Desain Eksperimen dengan Metode Taguchi. Surabaya: Graha IlmuSunengsih, N., Winarni, S. & Amazaina, T.G. (2017). Kajian Terhadap Metode Taguchi-TOPSIS pada Optimasi Multirespon. Seminar Satistika FMIPA Unpad. Bandung: Universitas PadjajaranSchonmetz, A. & Gruber, K. (2013). Pengetahuan Bahan dalam Pengerjaan Logam. Bandung: Penerbit Angkasa.Sularso & Suga, K. (2013). Dasar Perencanaan dan Pemilihan Elemen Mesin. Jakarta: PT. Pradnya ParamitaTriastuti, W. (2009). Metode Taguchi untuk Optimalisasi Produk pada Rancangan Faktorial. Media Statistika, 2(2): 81-92Wibowo, D.B., Soepangkat, B.O., & Pramujati, B. (2013). Optimasi Gaya Potong, Kekasaran Permukaan, dan Keausan Tepi Pahat pada Proses Bubut Baja S45C dengan Menggunakan Kombinasi Metode Taguchi dan Grey Relation Analysis. Seminar Nasional. Surabaya: Institut Teknologi Surabaya
Growth of Rubber Seeds (Hevea brasiliensis Muell.Arg) from Sleeping Eye Stum by Applying Organic Fertilizer Bulk and Liquid Herbal Waste Fahrizal, Fahrizal; Rusli Anwar; Jamaluddin; Bustomi, Muhamad Yazid
Jurnal Loupe Vol 20 No 01 (2024): June 2024
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v20i01.3066

Abstract

The organic fertilizer derived from herbal medicine waste in both bulk and liquid form is rich in macro and micro nutrients as well as decomposing microbes and probiotic bacteria needed to improve soil chemical properties.  These fertilisers can be used to obtain better growth of rubber seedlings, especially rubber seedlings of sleeping eye origin. The objectives of this study was(1) to determine the effect of organic fertilizer and liquid bulk herbs Against Waste growth and (2) to know nutrient uptake of N, P, and K seedling stum Sleep eye. The study was conducted in a 4 x 3 factorial experiment arranged in a completely randomized design (CRD) with five replications. The first factor is the concentration of organic liquid fertilizer consisting of four in the standard: h0 = 0 ml L-1 of air (0%); h1 = 2 ml L-1 air (0.2%); h2 = 4ml L-1 air (0.4%); h3 = 6ml L-1 air (0.6%). The second factor is the dose of organic fertilizer consists of three levels: (b0 = 0 mg ha-1: b1 = 5 mg ha-1: b2 = 10 Mg ha-1). Data were analyzed with Analysis of Variant and continued with Duncan's Multiple Range Test 5% level. The results showed that the dosage of bulk organic fertilizers was significantly different at the level of 5% of the uptake of nitrogen, other observations were not significantly different. While the treatment of liquid organic fertilizer was highly significantly different at the level of 1% of nitrogen absorption, other observations were not significantly different. No real effect on their interaction in all observations. The treatment dose of organic fertilizer 5 Mg ha-1 and the treatment of liquid organic fertilizer 4 ml L-1 provided the highest results in leaf area of 586.46 cm2 per plant compared to the control treatment of 181.06 cm2 per plant. The treatment of bulk organic fertilizer dose and liquid organic fertilizer concentration predicted P2O5 nutrient uptake per rubber plant did not show significant differences. While the treatment of doses of bulk organic fertilizer and concentrations of liquid organic fertilizer is thought to be potassium nutrient uptake per rubber plant does not show significant differences, but can be seen from the growth of diameter, number of leaves, and leaf area.
Managerial Strategies for Curriculum Development in Sports, Nursing, and History Education Programs Based on Outcome-Based Education (OBE) and Research Findings Lestari, Indah; Fahrizal, Fahrizal; Sumarjo, Sumarjo; Rahmi, Lisa; Amirzan, Amirzan
EduLine: Journal of Education and Learning Innovation Vol. 5 No. 2 (2025)
Publisher : PT ARRUS Intelektual Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.eduline3968

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This study investigates managerial strategies for curriculum development in sports science, nursing, and history education programs based on OBE and research findings. The research examines how program managers implement these strategies, the extent of research integration into curricula, and obstacles that affect curriculum effectiveness in producing professional graduates. This study employs qualitative data collected through in-depth interviews, participatory observation, and document analysis from three universities in Aceh, Indonesia. The participants included faculty deans, program heads, curriculum development team leaders, permanent faculty, and final-year students selected through purposive sampling. Data collection focused on managerial practices, stakeholder involvement, theory-practice integration, and research incorporation into curriculum development processes. The collected data was analyzed using interactive data analysis techniques involving data reduction, presentation, and conclusion drawing. The results show that three main managerial strategies are currently implemented: stakeholder-inclusive curriculum development involving both internal and external stakeholders, competency-based curriculum design structured around measurable learning outcomes, and theory-practice integration mechanisms through mandatory collaboration between theoretical and practical course instructors. However, three primary challenges emerged: research-curriculum misalignment reported by 78% of faculty, faculty workload imbalance identified by 85% of respondents, and industry-academia gaps noted by 67% of program administrators. Research integration showed varying implementation levels, with systematic approaches demonstrating higher effectiveness than ad-hoc methods. The findings suggest that effective OBE-based curriculum management requires systematic research-curriculum alignment mechanisms, flexible faculty role definitions supporting research-teaching integration, and ongoing industry partnerships informing both research directions and curricular content. Success depends on institutional commitment to developing coherent systems rather than implementing isolated practices
Drill Methods in Sepak Takraw Learning for Middle School Students: A Study of Sepak Sila Ability Asri A; Adil, Ahmad; Fahrizal, Fahrizal; Suwardi, Suwardi; Hudain, Muh. Adnan
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 2 (2025): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i2.2945

Abstract

This study aims to determine the improvement of sepak sila skills through the drill method in sepak takraw learning in junior high school students. This study uses an approach based on classroom action research. The sample in this study was students of Class VIII of Public Middle School Satu Atap Iwur Pegunungan Bintang, with a sample used of 32 students. The sampling technique used was total sampling. Qualitative data analysis used qualitative descriptive techniques to interpret the results of observations about the learning process. The results showed that in the first cycle of learning Sepak Takraw Sepak Sila using the drill method, the passing rate for all students was 66.67%. In the affective aspect, student motivation to participate in learning still needs to be improved, especially in the early meetings. Discipline and accuracy in performing sepak sila using the drill method still need improvement. While the average completeness value of all students was 93.75% in cycle II, only 7.34% of students had not achieved completeness. However, the learning process encountered several obstacles. In the cognitive aspect, students still have difficulty in working on questions and lack focus when working on assignments, which causes the final grade to be less than optimal. It can be concluded that there is an increase in sepak sila skills by using the drill method in sepak takraw learning among class VIII students of Public Middle School.
Influence of Arm Muscle Strength and Concentration on Badminton Long Service Ability in Elementary Schools Rajab, Abd; Fahrizal, Fahrizal; Kamaruddin, Ilham; Adil, Ahmad; Hudain, Muh. Adnan
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 2 (2025): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i2.2949

Abstract

This study intends to analyze the effect of arm muscle strength, eye-hand coordination, and concentration on badminton long serving ability in students. This type of research uses a quantitative approach with a correlational design. The sample of this study at elementary school YPS Lawewu Sorowako amounted to 16 students. We measured arm strength using a hand-grip dynamometer and evaluated eye-hand coordination through a ball wall-toss test. We analyzed the data using SPSS and AMOS for path analysis. The results indicated that there was a weak positive effect between arm muscle strength and long serve. This effect was not statistically significant because the significance value (0.566) was much greater than 0.05. There was a weak positive effect between eye-hand coordination and long serve. This effect was not statistically significant because the significance value (0.423) was greater than 0.05. There was a weak negative effect between concentration and long service. The effect is not statistically significant because the significance value (0.212) is greater than 0.05. Additionally, there is no significant effect of both variables on long service. Both variables have a significance value > 0.05. Concentration has a negative effect (-0.417). Hand-eye coordination has a weak positive effect (0.152). The conclusion is that there is a weak positive effect between arm muscle strength, hand-eye coordination, and badminton long service. There is a weak negative effect of concentration on badminton long service performance. Next, there is no significant effect of arm muscle strength or hand-eye coordination through concentration on the badminton long service ability of Elementary School extracurricular participants.
Improving Long Jump Learning Outcomes Through Middle School Students' Hopscotch Game Nurhidayat, Budi; Hudain, Muh. Adnan; Kamaruddin, Ilham; Adil, Ahmad; Fahrizal, Fahrizal
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 2 (2025): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i2.2953

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This study aims to determine the effectiveness of implementing the hopscotch game in long jump learning for students of public middle school 13 Penajam Paser Utara, as well as to improve students' long jump abilities, including in aspects of landing method, jump angle, support, and starting speed. This study used a classroom action method with two cycles, involving 32 students of class VII C. Measurements were carried out through long jump tests before and after implementing the hopscotch game, with quantitative data analysis to compare student learning outcomes. The results showed a significant increase in students' long jump abilities. The average long jump score in the pre-cycle was 70, increasing to 72.50 in cycle I and reaching 83.44 in cycle II. This increase shows the effectiveness of the hopscotch game in improving students' abilities, with a learning completion percentage reaching 100%. The application of the hopscotch game in long jump learning has proven effective in improving the long jump abilities of students of public middle school 13 Penajam Paser Utara. Therefore, students can utilize the hopscotch game as an engaging alternative learning method to enhance their physical abilities and skills.
Traditional Massallo Game Approach Model in Elementary School: Foot Reaction Speed in Badminton Sukardi, Sulham; Suwardi, Suwardi; Hudain, Muh. Adnan; Adil, Ahmad; Fahrizal, Fahrizal
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 2 (2025): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i2.2964

Abstract

This study aims to improve the reaction speed of the feet in badminton through the traditional massalo game approach in students of elementary school. The study employed Classroom Action Research, which involved two cycles of planning, action implementation, observation, and reflection. The population and sample of the study were all grade V students of elementary school 171 Pinrang, totaling 20 students. The results of the study showed a significant increase from the pre-cycle to cycle II. In the pre-cycle, 100% of students were in the less category (score < 80) with 0% completion. Cycle I showed an increase, with 50% of students achieving completion in the sufficient category (score ≥ 80-86). In cycle II, after changes were made to the Massaro game approach, every student (100%) completed the tasks in the sufficient category, with their average reaction time increasing by 35% and their active participation reaching 95%. In conclusion, the traditional massalo game approach has proven effective in improving the reaction speed of the feet in badminton while creating a positive and enjoyable learning experience for elementary school students.
Distance Variation Approach in Elementary School Students: Learning Outcomes of Underhand Passing Nur, Nirmawati; Fahrizal, Fahrizal; Suwardi, Suwardi; Hudain, Muh. Adnan; Adil, Ahmad
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 2 (2025): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i2.3001

Abstract

This study aims to enhance the learning outcomes of underhand passing in volleyball games by using a distance variation approach specifically designed for fifth-grade students at public elementary schools. The research method employs classroom action research, a one-cycle process that involves stages of planning, action, observation, and reflection. The subjects of the study were 22 fifth-grade students at Public Elementary School Parak No. 11 Kepulauan Selayar. The distance variation approach applied includes distances of 2 meters, 3 meters, and 4 meters with a focus on the assessment of accuracy (0-30), strength (0-30), and technique (0-40). The results of the study showed an increase in underhand passing ability from the initial condition, where 13 students were in the "less" category, 8 students in the "enough" category, and 1 student in the "good" category, to 0 students in the "less" category, 18 students in the "enough" category, and 2 students in the "good" category in cycle I with an average score of 84.59, and all students were declared complete in underhand passing learning outcomes. Based on the results of the study, it can be concluded that the distance variation approach is effective in improving the learning outcomes of underhand passing in volleyball games for fifth-grade students of Public Elementary School, with a completion rate reaching 100%.
Athletics Formula 1 Games for Elementary School Students: Learning Achievement for 60 Meter Running Speed Hadi, Syamsul; Hudain, Muh. Adnan; Kamaruddin, Ilham; Adil, Ahmad; Fahrizal, Fahrizal
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 3 (2025): June
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i3.3069

Abstract

This study aims to determine whether the implementation of the Kids Athletics Formula 1 game leads to an increase in 60-meter running speed among students in public elementary schools. The study also aims to develop innovative methods for enjoyable athletic learning for elementary school students. We conducted the study in two cycles using the Classroom Action Research method (planning, implementing actions, observation, and reflection). The subjects of the study were 18 grade VI students at public elementary school 7 Salatungo. The instrument used was a 60-meter running speed test with the Learning Objective Completion Criteria set at 80. The results of the study showed a significant increase in students' 60-meter running ability after the implementation of the Kids Athletics Formula 1 game. In the pre-cycle, the average student score was only 62 with a completion percentage of 0% (no students completed). In cycle I, the average score increased to 73 with a completion percentage of 22% (4 students completed). In cycle II, after the improvement of the learning method, the average score increased to 82 with a completion percentage of 100% (all 18 students completed the Learning Objective Achievement Criteria). The implementation of the Kids Athletics Formula 1 game has proven effective in increasing the 60-meter running speed of grade VI students at public elementary school 7 Salatungo. A fun learning approach through games can increase student enthusiasm and significantly improve their athletic skills.
The Effect of Drill Training on Underhand Passing Ability in High School Students Uly, Arfin; Hudain, Muh. Adnan; Adil, Ahmad; Kamaruddin, Ilham; Fahrizal, Fahrizal
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 2 (2025): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i2.3172

Abstract

This study aims to determine the effect of drill training on students' underhand passing ability in high school. The method used was an experiment with a pretest-posttest design, involving 18 students divided into two groups at SMAS Datok Sulaiman Palopo. The first group underwent drill passing training against the wall, while the second group underwent pair passing instruction. Data were collected through underhanded passing ability tests before and after training. The results showed that there was a significant effect of drill training on underhanded passing ability. In the wall training group, the average score increased from 9.11 (pretest) to 11.89 (posttest), with a difference in the increase of 2.78 points and a significance value of 0.000 (p < 0.05). In the pair training group, the average score increased from 9.33 (pretest) to 12.22 (posttest), with a difference in increase of 2.89 points and a significance value of 0.001 (p < 0.05). The decrease in standard deviation in the pair group from 2.236 to 1.333 indicated an increase in consistency. The conclusion of this study is that both training methods proved effective in improving underhand passing ability, with paired training showing slightly higher improvements than wall training. This study contributes to the development of school training programs to improve students' sports skills.