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All Journal Media Mesin: Majalah Teknik Mesin INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Otopro IJORER : International Journal of Recent Educational Research Journal of Vocational and Technical Education (JVTE) Journal of Mechanical Engineering, Science, and Innovation
Ika Nurjannah
Teknik Mesin, Universitas Negeri Surabaya
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Transportation Other

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Analysis of Graduate Relevance to Program Learning Outcome Mechanical Engineering in State University of Surabaya Heru Arizal; Tri Hartutuk Ningsih; Ali Hasbi Ramadani; Ika Nurjannah; Husni Mubarok
IJORER : International Journal of Recent Educational Research Vol. 3 No. 1 (2022): January
Publisher : Faculty of Teacher Training and Education Muhammadiyah University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46245/ijorer.v3i1.180

Abstract

The college is one of the create of professional and qualified Human resource.. Universities must develop following the development needs of the business world and the industrial world. The purpose of this study was to analyze the relevance of Mechanical Engineering graduates to the Program Learning Outcome and as material for curriculum evaluation. The subjects of this research were 120 graduates in 2019 and 2020. The technique of collecting data was using a questionnaire through the State University of Surabaya Tracer Study web. The data is then analyzed using quantitative descriptive. As many as 55.83% of alumni are already working, 32.5% are not working, 10% are entrepreneurs, and the rest are continuing their education. The waiting time for graduates to get a first-time job takes an average of 4.49 months. The total relationship between the field of work and the field of education has a very tight, tight and pretty tight relationship of 77.5%. The profile of a mechanical engineering graduate is to become a mechanical engineer. The number of graduates who match the graduate profile is 61.2%. The competence of graduates is still below the competencies needed by the business and industrial. From the data above, we can conclude that graduates from the mechanical engineering study program are relevant to the established Program Learning Outcome.
STUDI NUMERIK SEPARASI ALIRAN 3D AKIBAT PENAMBAHAN FFST PADA BIDANG TUMPU AIRFOIL ASIMETRI Ika Nurjannah; Herman Sasongko; Heru Mirmanto
Otopro Vol 16 No 1 Nov 2020
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v16n1.p12-17

Abstract

3D flow separation is a form of flow loss that cannot be avoided on turbo engines. In the axial compressor, 3D flow separation is due to the interaction between the blade boundary layer and the casing boundary layer or the hub boundary layer. The result of the secondary flow causes blockage of the flow which causes the pressure on the compressor to decrease. Efforts to reduce secondary flow are carried out by adding a FFST to endwall. This research was conducted in a numerical simulation using FLUENT 6.3.26 software. The parameters used in the free stream flow Re = 1.64 x 105 and Turbulence Intensity Tu = 0.3% to assess the comparison of the flow characteristics on the endwall of the British 9C7 / 22.5C50 asymmetric airfoil due to the addition of a FFST and without FFST with variations angle of attack (α) of 00, 80, 120, 140, 160 .The results show that the addition of FFST can increase the turbulent intensity in the area near the wall which turns into momentum, so that it has an impact on the ability of the flow to overcome the adverse pressure in the trailing edge area and further backward (delayed) separation which results in smaller wake. With the addition of the angel of attack, the saddle point position is more directed to the lower side and the attachment line is not induced by the horseshoe vortex, so that the flow is more able to follow the contours of the body, as a result the curling flow is weaker and the wake is narrower and the blockage (energy loss) can be reduced. The most effective energy reduction due to secondary flow through FFST occurs at α = 8 ° at 7.36%.
Wavy Leading Edge (WLE) Influence on a Rectangular Wing Using an Unsteady Analysis Approach Iis Rohmawati; Hiroshi Arai; Ika Nurjannah
Journal of Mechanical Engineering, Science, and Innovation Vol 3, No 1 (2023): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2023.v3i1.4477

Abstract

A rectangular wing with Wavy Leading Edge (WLE) effect was investigated experimentally and numerically. This research was carried out with the NACA 0018 profile. The morphology of humpback whale flippers, which are blunt and rounded in a specific pattern, inspired the design of the WLE. The rectangular wing was explored in pitching motion with a reduced frequency of k = 0.25 and varied aspect ratios. Multiple aspect ratios (AR) of the rectangular wing have been evaluated to determine the best wing aspect ratio, notably 3.9, 5.1, and 7.9. Only at AR 3.9 and 5.1 does the WLE perform efficiently in both upstroke and downstroke motion. WLE has a sinusoidal function shape. The improvement of lift force was stronger during upstroke motion than during downstroke motion. The stall is minimized during the pitching motion of the WLE wing, according to the numerical simulation. This result could be applied to fin stabilizers or wind turbines.
OPTIMALISASI METODE BLADE TURBIN ANGIN SUMBU HORIZONTAL Fathur Rahman; Ika Nurjannah; Handini Novita Sari; Alexander Christian; Muhammad Khoirul Hidayat
Otopro Vol 18 No 2 Mei 2023
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n2.p59-64

Abstract

The utilization of wind turbines is able to convert wind energy into electrical energy. It is recorded from the DG of NREEC source that Indonesia has a wind energy potential of 60.6 Giga Watt (GW) with a total renewable energy potential of 442GW. One of the most common types of wind turbines is the horizontal axis wind turbine. This study uses a literature study method that aims to compare and summarize data optimizing variations in the number of blades and wind speed on horizontal axis wind turbines from various sources. The results of the study are known that the pinwheel power generated by the rotation of the pinwheel blade produces energy that is converted into electrical energy. The wind speed and blade rotation yield are directly proportional to the energy produced. The greater the wind speed given to the turbine, the higher the rotation. Variations in the number of blades result in variations in rotational properties, since the effect of the ratio of tip speed is inversely proportional to wind speed. The performance of horizontal axis wind turbines can be optimized by applying blade design using chord and twist linearization methods. The greatest efficiency of the counter-rotational horizontal shaft wind turbine is achieved at a blade angle of 10° and a wind speed of 4.03m/s, resulting in a maximum efficiency of up to 71.8%, which is higher than the optimal single-rotor power coefficient of 59%. This means dual-rotor wind turbines are more efficient at converting energy than single-rotor wind turbines.
PENGARUH PENERAPAN WEBSITE E-LEARNING PADA MATA PELAJARAN PKKR DI SMK NEGERI 2 SURABAYA Ika Nurjannah; Sisca Aprilliana; Handini Novita Sari; Heru Arizal; I Made Arsana
Journal of Vocational and Technical Education (JVTE) Vol. 5 No. 2 (2023): September
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jvte.v5n2.p56-65

Abstract

Pandemi covid-19 yang berlangsung secara global memiliki banyak dampak di Indonesia, pada sector pendidikan dampak covid-19 mengakibatkan adanya larangan pembelajaran secaralangsung atau tatap muka dan beralih menjadi pembelajaran secara daring. Website e-learning merupakan solusi di dunia pendidikan sebagai layanan yang menawarkan fleksibilitas dan mobilitas yang tinggi dalam pelaksanaan pembelajaran dimasa pandemic covid-19. Tujuan pada penelitian ini untuk mengetahui dan menganalisa respon dan hasil belajar siswa terhadap penerapan website e-learning dalam pembelajaran mata pelajaran PKKR kelas XI TKRO di SMK Negeri 2. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian kuantitatif dengan melakukan pendekatan eksperimen. Metode yang digunakan dalam penelitian ini adalah eksperimen dengan menggunakan desain Pre-test dan post-test control design. Dalam desain ini terdapat dua kelas yang mana kelas pertama diberi perlakuan (treatment) sedangkan kelas yang lain tidak diberi perlakuan. Sampel berjumlah 64 siswa dari kelas XI TKRO 1 berjumlah 33 siswa dan XI TKRO 2 dengan jumlah 31 siswa. Teknik pengumpulan data diperoleh dari angket respon siswa, pre test dan post test. Hasil penelitian menunjukkan bahwa : Respon siswa kelas XI TKRO SMK Negeri 2 Surabaya terhadap pembelajaran online melalui website e-learning adalah “Baik” dengan rata-rata sebesar 66,33%. Serta Penerapan website e-learning dapat meningkatkan hasil belajar siswa dengan nilai ketuntasan klasikal sebesar 61% (Baik). Kata Kunci: Website E-learning, Penelitian kuantitatif, Eksperimen, Respon siswa, Hasil Belajar
Analisis Transisi Pembelajaran Pasca Pandemi Dari Daring ke Luring Di SMKN 3 Surabaya Geovany Bangun Laksana Geo; ika Nurjannah
Journal of Vocational and Technical Education (JVTE) Vol. 5 No. 2 (2023): September
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jvte.v5n2.p74-84

Abstract

Penyebaran covid-19 sudah mulai menyusut sehingga pemerintah mengeluarkan kebijakan memberlakukan pembelajaran secara offline. Sekolah. SMKN 3 Surabaya merupakan sekolah yang terdampak covid-19. Pada pembelajaran yang telah dilaksanakan secara offline guru banyak mengeluh terkait siswa dalam pembelajaran dikelas karena perlu akan penyesuaian dari efek pembelajaran daring ke luring. Tujuan penelitian ini yaitu untuk menganalisis transisi pembelajaran pasca pandemi dari daring ke luring di SMK Negeri 3 Surabaya. Metode pada penelitian ini adalah deskriptif kuantitatif. Metode pengumpulan data yang digunakan yaitu: observasi nilai UAS Ketika daring dan luring, dokumentasi dan penyebaran kuesioner online melalui google form kepada guru otomotif dan siswa kelas XI dan XII TKRO di SMKN 3 Surabaya. Teknik analisis data yang digunakan peneliti yaitu analisis deskriptif dan uji prasyarat. Uji prasyarat yang digunakan yaitu: uji normalitas, uji homogenitas dan uji hipotesis (t). hasil penelitian ini yaitu sebanyak 56% siswa tertarik pada pembelajaran luring diperkuat juga oleh respon guru sebanyak 53% guru menyukai pembelajaran luring. pada data nilai UAS dengan uji normalitas mendapatkan 0,059>0,005 maka data terdistribusi dengan normal, lalu dilanjutkan dengan uji homogenitas mendapatkan nilai 0,293>0,005 maka data tersebut homogen dan dilanjutkan dengan uji hipotesis mendapatkan nilai 0,00<0,05 dengan kesimpulan terdapat perbedaan hasil belajar pada pembelajaran daring dan luring dengan nilai mean 76,9 (daring) dan 83,4 (luring) Kata Kunci: covid-19, pembelajaran daring dan luring, nilai UAS The spread of covid-19 has begun to shrink so the government issued a policy to impose offline learning in schools. SMKN 3 Surabaya is a school affected by covid-19. In learning that has been carried out offline, teachers complain a lot about students in class learning because they need to adjust from the effects of online to offline learning. So the purpose of this study is to analyze the post-pandemic learning transition from online to offline at SMK Negeri 3 Surabaya. this research uses quantitative descriptive methods. The data collection methods used: were the observation of UAS scores when online and offline, documentation, and distributing online questionnaires via Google form to teacher otomotif dan student classes XI and XII TKRO at SMKN 3 Surabaya. The data analysis techniques used by researchers are descriptive analysis and prerequisite tests. The prerequisite tests used were: normality test, homogeneity test, and hypothesis test (t). the results of this study are as many as 56% of students are interested in offline learning strengthened also by the teacher's response as much as 53% of teachers like offline learning. on the UAS score data with the normality test getting 0.059>0.005 then the data is normal, then continued with the homogeneity test getting a value of 0.293>0.005 the data is homogeneous, and continued with the hypothesis test getting a value of 0.00<0.05 with the conclusion that there are normality, homogeneity, and hypothesis tests differences in learning outcomes in online and offline learning with a mean value of 76.9 (online) and 83.4 (offline). Keywords: covid-19, learning daring and luring, UAS score
PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA KELAS XI TKR DI SMK NEGERI 1 JABON Tagar Baharsyah; Ika Nurjannah
Journal of Vocational and Technical Education (JVTE) Vol. 5 No. 2 (2023): September
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jvte.v5n2.p115-124

Abstract

Model pembelajaran yang digunakan masih konvensional dan kurang bervariasi, mengakibatkan semangat belajar menurun karena tingkat kebosanan siswa terhadap materi yang banyak maupun cara penyampaiannya. Sehingga secara tidak langsung dapat menurunkan hasil belajar peserta didik, dapat dilihat dari nilai tugas mata pelajaran PMKR pada semester gasal 2022/2023 yang masih berada pada indikator belum memuaskan. Tujuan pada penelitian ini untuk mengetahui pengaruh model pembelajaran problem based learning terhadap hasil belajar untuk siswa kelas XI TKR SMK Negeri 1 Jabon serta respon siswa terhadap pembelajaran PBL tersebut. Metode penelitian yang digunakan adalah metode penelitian kuantitatif dengan model quasi eksperimental yang memakai pendekatan nonequivalent control group design. Untuk teknik analisis data dalam penelitian ini mengadakan pretest-posttest yang kemudian hasilnya diolah dengan uji homogen, normalitas, dan hipotesis. Pada uji normalitas menggunakan Uji Kolmogorov-Smirnov maupun Saphiro-Wilk, didapatkan nilai signifikasi (sig) untuk semua data dari kelas kontrol maupun kelas eksperimen lebih dari 0,05 maka dapat dikatakan bahwa data yang diperoleh terdistribusi normal. Untuk uji homogenitas diperoleh bahwa nilai sig dari test of homogeneity of variance sebesar 0,927>0,05 pada kedua kelas yang artinya data bersifat homogen dan dapat me-wakili variasi. Uji hipotesis menggunakan uji independent samples t test dan hasil yang diperoleh yaitu bahwa nilai sig (2-tailed) sebesar 0,034 kurang dari 0,05 artinya Ho ditolak dan Ha diterima. Berdasarkan uji hipotesis dan turunannya diperoleh bahwa nilai sig (2-tailed) sebesar 0,034 lebih kecil (>) dari 0,05 yang artinya Ho ditolak dan Ha diterima, Maka model pembelajaran problem based learning memiliki pengaruh yang signifikan terhadap hasil belajar siswa kelas XI TKR SMK negeri 1 Jabon. Dari hasil angket respon, model pembelajaran yang digunakan dapat meningkatkan minat belajar siswa sehingga dapat merangsang mereka untuk menyerap pengetahuan baik itu yang diberikan maupun yang mereka cari sendiri. Hal ini dibuktikan dari penilaian siswa terhadap model pembelajran problem based learning mendapatkan nilai persentase sebesar 76,32%, dimana nilai tersebut jika didasarkan pada kriteria respon penerimaan siswa pada model pembelajaran problem based learning masuk dalam kategori baik.
PENGARUH MODEL PBL TERHADAP HASIL BELAJAR PADA MATA PELAJARAN PKKR KELAS XI TKR DI SMKN 1 JABON Satria Pinandhita; Ika Nurjannah
Journal of Vocational and Technical Education (JVTE) Vol. 5 No. 2 (2023): September
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jvte.v5n2.p125-133

Abstract

SMK merupakan salah satu bentuk pendidikan formal pada jenjang pendidikan menengah yang mempersiapkan peserta didiknya untuk bekerja dalam bidang tertentu. Tuntutan ini mengharuskan guru dan peserta didik beradaptasi dengan menciptakan suasana belajar yang memudahkan mencapai tuntutan tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh, hasil belajar serta respon peserta didik dari penerapan PBL pada materi sistem EFI mata pelajaran PKKR kelas XI TKR SMKN 1 Jabon. Metode penelitian menggunakan quasi eksperimental design dengan desain Non-Equivalent Control Group Design. Subjek penelitian ini adalah XI TKR 1 sebagai kelas kontrol dan XI TKR 2 sebagai kelas eksperimen. Kemudian untuk menganalisa data digunakan uji normalitas, uji homogenitas dan independent sample t-test. Hasil penelitian menunjukkan bahwa: (1) Model PBL berpengaruh secara signifikan, dibutikan melalui data yang diperoleh diuji normalitas menggunakan uji Kolmogorov-Smirnov dan diuji homogenitas menggunakan uji Levene dengan hasil nilai signifikansi semua data > 0,05 sehingga data dinyatakan normal dan homogen. Kemudian diuji hipotesis menggunakan independent sample t-test dengan hasil nilai signifikansi 0,001< 0,05 sehingga Ho ditolak dan Ha diterima. (2) Hasil belajar kelas eksperimen yang mendapat perlakuan dengan model PBL mengalami peningkatan 32,18 lebih besar dari kelas kontrol yang tidak mendapat perlakuan mengalami peningkatan 28,935. (3) Respon peserta didik terhadap penerapan model PBL mendapat rata-rata presentase 85,627% sehingga dapat dikategorikan pada kategori sangat baik. Dari hasil tersebut, dapat disimpulkan bahwa model PBL berpengaruh terhadap hasil belajar pada materi sistem EFI mata pelajaran PKKR dibuktikan dengan hasil independent sample t-test, hasil belajar pada kelas eksperimen serta respon peserta didik terhadap penerapan model PBL.
THE EFFECT OF TEMPERATURE VARIATION AND VARIOUS METAL MATERIALS ON CONDUCTION HEAT TRANSFER RATE Handini Novita Sari; Ika Nurjannah; I Made Arsana; Ghaniy Amirul Dana; Moch. Variant Julianto
Media Mesin: Majalah Teknik Mesin Vol 24, No 2 (2023)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v24i2.21138

Abstract

Thermal conductivity is the value of a material's ability to conduct heat. Heat transfer occurs due to the difference in temperature found in an object. Heat transfer can take place in three ways, namely conduction, radiation and convection. The purpose of this study was to determine the conduction heat transfer rate for 3 solid cylindrical materials, namely aluminum, iron, and brass. by varying the temperature 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃ and 80 ℃. The working principle in this experiment is to prepare 3 variations of solid cylinders, then place them on a thermal conduction trainer by adjusting the temperature of the test on the thermocontrol display (T1) in stages and the test results are obtained as shown by a digital thermometer (T2). From the test results, the results of the heat transfer rate have been found, for the metal material that has the greatest heat transfer rate is aluminum with a heat rate value of 479.7 Watt at 80 ℃, the second largest heat transfer rate value is aluminum with a heat transfer rate of heat is 299.7 Watt at 80℃ while for the material the smallest rate is found in iron material with a value of 214 Watt at 80℃. The average heat transfer rate for aluminum is 325.5 Watt, for an average heat transfer rate for iron is 147.1 Watt, and the average heat transfer rate of brass is 218.5 Watt.
Problem-Based Learning as a Learning Innovation Strategy To Improve the Motivation and Learning Outcomes of Distance Learning Handini Novita Sari; I Made Arsana; Ika Nurjannah
invotek Vol 23 No 1 (2023): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v23i1.1043

Abstract

Distance learning, which lasted long during the COVID-19 emergency, has led to student boredom in participating in the learning process. The impact is a decrease in learning outcomes, so innovative learning methods are needed to minimize this. This study will analyze the application of problem-based learning by considering learning outcomes and student motivation. The subjects of this study were 5th-semester Mechanical Engineering students. The design of this study used classroom action using the Kemmis and McTaggart models, which consisted of three steps: planning, acting and observing, reflecting, and carried out in two cycles. The research data was then analyzed quantitatively based on predetermined indicators. Based on this research study, it was found that learning outcomes data increased by 36% from cycle I to cycle II. The results of student learning motivation in Process I were 27.3% had high learning cycles, 63.7% had moderate learning cycles, and 9.9%. In cycle II, students' learning motivation increased from high, medium, and low, respectively, by 45%, 52%, and 3%. Based on the results of the analysis, this means that problem-based learning strategies improve learning outcomes and student learning motivation.
Co-Authors Alexander Christian Ali Hasbi Ramadani Fathur Rahman Geovany Bangun Laksana Geo Ghaniy Amirul Dana Handini Novita Sari Handini Novita Sari Handini Novita Sari Handini Novita Sari Herman Sasongko Heru Arizal Heru Mirmanto Hiroshi Arai Husni Mubarok I Made Arsana I Made Arsana I Made Arsana Iis Rohmawati Moch. Variant Julianto Muhammad Khoirul Hidayat Satria Pinandhita Sisca Aprilliana Tagar Baharsyah Tri Hartutuk Ningsih