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Journal of Mechanical Engineering Learning
Published by Universitas Negeri Semarang
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 139 Documents
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HASIL BELAJAR MATA PELAJARAN CNC MENGGUNAKAN MEDIA SIMULASI SWANSOFT CNC PADA PESERTA DIDIK SMK NEGERI 1 MAGELANG
Journal of Mechanical Engineering Learning Vol 3 No 1 (2014)
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Swansoft CNC simulation media is a complete simulation media which is the same as the real CNC machine. The purposes of this study were to determine the learning outcomes before and after treatment, an increase in the experimental class and comparison with the control class. The researcher used pre-test and post-test control group design . The sample itself is taken is taken in TMC class as a control group, and TMD class as an experimental group. The results showed the average post-test learning outcomes t_count = 3,763 < t_ table = 1.68. Because t is in the region of rejection of Ho, therefore, the experimental group was higher than the control group. The average of pre-test learning outcomes of experimental group was 64,60 and the control group 64,23. The average of post-test learning outcomes experimental class was 84.20, meanwhile the control class 77.31 . The researcher concludes that 1 ) The average of pre-test learning outcomes are relatively similar in both groups and low categorized; 2 ) The average of post-test learning outcomes experimental class was 84,20, meanwhile the control class 77.31 ; 3) Both groups is significantly increased ; 4 ) The results of the experimental class learning is better than control class. It is suggested for the teachers to use Swansoft CNC simulation media. For the further research, investigating the psychomotor as well also needed.
PENGARUH TEMPERATUR PADA PROSES TRANSESTERIFIKASI TERHADAP KARAKTERISTIK BIODIESEL DARI MINYAK GORENG BEKAS
Journal of Mechanical Engineering Learning Vol 3 No 1 (2014)
Publisher : Journal of Mechanical Engineering Learning

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The purpose of this research was to determine the effect of temperature on the quality of the biodiesel transesterification process. Raw materials used in the making process of biodiesel is waste cooking oil. This Research using the transesterification process by react catalyst and methanol then mixed along with the waste cooking oil. The mixing takes one hour each mixing using a variation of temperature of 30°C, 40°C, 50°C and 60°C. Then the transesterification proceeds deposited for approximately 24 hours. The results of the precipitation in the form of biodiesel and glycerin is separated. The biodiesel washing process 4 times washing and drying biodiesel by heating with the temperature reaching 112°C and cooling. Test results on the density characteristics of temperature variation 30°C and 40°C of 0.8779 g / ml, 50°C for 0.8771 g / ml and a temperature of 60°C values ​​obtained 0.8747 g / ml. On testing the viscosity temperature 30°C, 40°C, 50°C and 60°C resulting value 5.258 mm2 / s, 5.078 mm2 / s, 4.939 mm2 / s, and 4.728 mm2 / s. For the test results to the flash point temperature of 30°C is 202.5°C, at 40°C temperature variation of 198.5°C, at temperature 50°C obtained 196.5 ° C and 60°C at 192.5°C. From the test data, the results obtained characteristic density, viscosity and flash point. The results showed that all of the testing of biodiesel produced meets the standard characteristics of biodiesel. It can be concluded that the use of variations in temperature do not affect the characteristics of the biodiesel. In addition, biodiesel research results according to the criteria of diesel motor fuel.
PERBEDAAN HASIL BELAJAR KOMPETENSI MENJELASKAN PROSES-PROSES MESIN KONVERSI ENERGI MENGGUNAKAN MODEL PEMBELAJARAN SNOWBALL THROWING DENGAN MODEL PEMBELAJARAN LANGSUNG
Journal of Mechanical Engineering Learning Vol 3 No 1 (2014)
Publisher : Journal of Mechanical Engineering Learning

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This study aims at finding out if the differences and a significant increase in learning outcomes between the experimental group were taught by Snowball Throwing learning model and the control group were taught with direct instruction on competencies Explaining Processes Energy Conversion Machine. In this study research design pre-experimental design with a static group comparison approach. The population was class X Light Vehicle Engineering (X TKR) SMK N 10 Semarang academic year 2013/2014. Samples was determined using cluster random sampling technique and derived class X TKR 2 as the experimental group and class X TKR 3 as a control group. The results of the analysis of data showed the average value of the initial data for the experimental group was 51.68 then after the experiment increased to 65.33 which means an increase of 13.65 (26%) and for the control group the average value of the initial data for 53.94 then after the experiment increased to 63.97 which means an increase of 10.03 (19%). It concluded there was no difference and a significant improvement in learning outcomes, however the use of Snowball Throwing learning model has been better than direct instruction because of increased learning outcomes experimental group is greater than the control group.
PENGARUH PENGGUNAAN MEDIA VIDEO TERHADAP HASIL BELAJAR SISWA PADA KOMPETENSI DASAR PENGOPERASIAN MESIN BUBUT
Journal of Mechanical Engineering Learning Vol 3 No 1 (2014)
Publisher : Journal of Mechanical Engineering Learning

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This study aims to determine the improvement of student learning outcomes and determine the effect of the use of video media and to know how big influence on learning outcomes. This study used a quasi experimental design (Quasi Experimental Design) to design forms Nonequivalent Control Group Design. The population is the entire class XI student of SMK Muhammadiyah TP in Salatiga, whereas samples taken were students of class XI TP 3 the number of 37 students. Data collection using questionnaires or tests and questionnaires. T - test analysis results obtained tcount = 2.097 > table = 1.69, then the better the experimental group than in the control group. Student learning outcomes in the pre-test showed an average of 65.67 for the experimental group and the control was 68.43, while the learning outcomes of students in post-test shows the average experimental group was 79.83 and 74.71 for the control, then learning using video media can improve student learning outcomes. From the results of the regression analysis obtained 32,72% of student learning outcomes are influenced by the use of video media.
PENINGKATAN HASIL BELAJAR MATA PELAJARAN PEMPROGRAMAN CNC DASAR MENGGUNAKAN SOFTWARE SIMULASI SWANSOFT SINUMERIK 802Se/C
Journal of Mechanical Engineering Learning Vol 3 No 1 (2014)
Publisher : Journal of Mechanical Engineering Learning

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Destination of this research is how to use this software simulation swansoft able to improve the practice of 3 grade students on courses machining base CNC use CNC machine type Sinumerik 802Se/c turning. The population was 3 grade students of Machinical Engineering Education skill courses totaling 62 of 2 class. Methods of data collection using the documentation and performance test also observation sheet. The result showed that there was an incrase in students learning outcomes pre-test score was 6,38 after initially getting treatment increased by 7,76. This is in contrast with the control group increased pre-test score 6,33 to 6,99. The result of the test T post-test obtained t = 12,024 for practice. Therefore,  tcount=10,943 > ttable = 1,67. Therefore, the implementation software simulation swansoft would make a better outcome to the students.
FLUID CIRCUIT SYSTEM EXPERIMENT” UNTUK MENGUKUR KERUGIAN ALIRAN FLUIDA MELALUI FITTNG ELBOW DAN TEE PADA MATA KUIAH MEKANIKA FLUIDA
Journal of Mechanical Engineering Learning Vol 3 No 2 (2014): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Penelitian ini bertujuan untuk mengembangkan media pembelajaran Fluid Ciruit System Experiment untuk mengukur kerugian minor yang terjadi pada fitting elbow dan tee dengan variasi penutupan gate valve sebagai pengatur debit, dan juga untuk mengetahui koefisien kerugian pada fitting elbow dan tee. Penelitian ini menggunakan pipa tembaga       1 inch dengan variasi penutupan gate valve dari 0-4 putaran tutupan. Kerugian minor dapat dilihat pada manometer. Metode penelitian yang digunakan adalah metode penelitian dan pengembangan dengan pendekatan 4D. Validasi media pembelajaran dilakukan oleh 2 pakar ahli mekanika fluida. Pengumpulan data menggunakan metode kuesioner/angket dan dokumentasi. Analisis data untuk kuesioner/angket menggunakan deskriptif persentase. Pengukuran kerugian minor dilakukan sebanyak 3 kali kemudian diambil rata-rata, sehingga diperoleh data hasil penelitian. Hasil pengembangan media pembelajaran ini berupa penggantian reservoir, pemberian nomor pada masing-masing komponen media pembelajaran, penambahan manometer air raksa (Hg). Berdasarkan hasil validasi dari 2 pakar ahli mekanika fluida diperoleh nilai 87,72% sehingga media pembelajaran ini dikategorikan sangat layak digunakan. Komponen-komponen yang digunakan sudah memenuhi standar dan dalam penggunaan sudah berjalan baik. Hasil penelitian menunjukkan aliran fluida yang melewati fitting elbow dan tee mengalami kerugian minor yang dipengaruhi oleh gate valve, semakin betambah penutupan gate valve semakin menurun kerugian minor yang terjadi. Dengan menggunakan persamaan kerugian minor, dapat diperoleh nilai koefisien kerugian pada fitting elbow 900 sebesar 0,99428 sedangkan pada fitting tee sebesar 1,22237.This study aims to develop instructional media Fluid Circuit System Experiment to measure the minor losses that occur in the elbow and tee fittings with variations closing gate valve as a regulator of discharge, and also to determine the loss coefficient at the elbow and tee fittings. Study using 1 inch copper pipe with variations of gate valve closing cover of 0-4 rounds. Minor losses can be seen on the manometer. The method used is the method of research and development with 4D approach. Validation is done by 2 instructional media experts fluid mechanics expert. Data collection using questionnaires / questionnaire and documentation. Analysis of the data for the questionnaire / questionnaire using deskriptif percentage. Measurements minor damages done 3 times and then an average is taken, in order to obtain research data. The results of the development of instructional media is either replacement of the reservoir, giving the number of each component of instructional media, the addition of water manometer mercury (Hg). Based on the results of two expert expert validation of fluid mechanics so that the values ​​obtained 87.72% of instructional media is considered very fit for use.The components that are used to meet the standard and has been running well in use. The results showed that fluid flow past the elbow and tee fittings suffered minor losses are influenced by the gate valve, the gate valve closure betambah diminishing minor losses that occur. By using equations minor losses, the loss coefficient can be obtained on fitting elbow90 0 at 0.99428 while the tee fitting at 1.22237.
PENGEMBANGAN MEDIA PEMBELAJARAN FLUID CIRCUIT SYSTEM EXPERIMENT PADA MATA KULIAH MEKANIKA FLUIDA DENGAN POKOK PEMBAHASAN PENGUKURAN KERUGIAN ALIRAN FLUIDA
Journal of Mechanical Engineering Learning Vol 3 No 2 (2014): Journal of Mechanical Engineering Learning
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Penelitian ini bertujuan untuk menghasilkan media pembelajaran berupa fluid circuit system experiment, mengetahui keefektifan dan keterlaksanaan sebagai media pembelajaran yang valid, dalam mengukur kerugian aliran dalam pipa.Penelitian ini termasuk ke dalam jenis penelitian dan pengembangan (Research and Development) sedangkan desain penelitian ini menggunakan metode ADDIE. Validasi media pembelajaran dilakukan oleh ahli mekanika fluida berjumlah dua orang dan validasi keefektifan dan keterlaksanaan media pembelajaran dilakukan oleh seorang ahli media. Pengujian dilakukan pada mata kuliah mekanika fluida Jurusan Teknik Mesin Fakultas Teknik Universitas Negeri Semarang. Hasil penelitian pengembangan yang dilakukan terhadap media pembelajaran fluid circuit system experiment berupa penggantian komponen  pipa dari besi tuang menjadi pipa tembaga seamless dan penambahan manometer air raksa, sehingga diperoleh media pembelajaran  dengan hasil yang baik berdasarkan uji kerja dari ahli media dan mekanika fluida. Media pembelajaran yang dikembangkan memperoleh penilaian dari ahli media dan ahli mekanika fluida dengan perolehan skor masing-masing 85.56% dan 87,50% sehingga perangkat pembelajaran dinyatakan sangat layak digunakan dalam pembelajaran. Kemudian media pembelajaran fluid circuit system experiment diujicobakan kepada mahasiswa guna mengetahui keefektifan dan keterlaksanaan media pembelajaran fluid circuit system experiment.This research aims to produce learning media fluid circuit system experiment, determine the effectiveness and feasibility as a valid instructional media, in measuring losses in pipe flow.This study belongs to the type of research and development (Research and Development), while the design of this study using ADDIE. Validation is done by two expert learning media fluid mechanics and validation media effectiveness and feasibility study conducted by someone media experts. Tests performed on fluid mechanics courses Department of Mechanical Engineering, Faculty of Engineering, Semarang State University. The results of research conducted on the development of learning media fluid circuit system experiment components such as replacement of cast iron pipe into a seamless copper pipe, instructional media in order to obtain good results with a test based on the work of media experts and fluid mechanics. Learning media developed to obtain an expert assessment of the media and fluid mechanics expert with acquisition scores respectively 85,56 % and 87,50 % stated that it is well worth learning device used in the study. Then learning media fluid circuit system experiment tested the students to determine the effectiveness and feasibility learning media fluid system circuit experiments.  
PENGEMBANGAN MEDIA PEMBELAJARAN PERPINDAHAN PANAS RADIASI DENGAN VARIASI BEDA PERLAKUAN PERMUKAAN SPESIMEN UJI
Journal of Mechanical Engineering Learning Vol 3 No 2 (2014): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Tujuan penelitian ini adalah untuk mengembangkan media pembelajaran perpindahan panas secara radiasi dengan variasi beda perlakuan permukaan spesimen uji dan untuk mengukur kelayakan media pembelajaran yang dikembangkan menurut ahli media, ahli materi perpindahan panas, dan mahasiswa mata kuliah perpindahan kalor dasar. Metode yang digunakan adalah penelitian pengembangan dengan desain penelitian ADDIE (Analisys, Design, Development, Implementation, and Evaluation). Bahan penelitian pengembangan ini adalah media pembelajaran perpindahan panas radiasi yang berupa alat peraga dan modul. Subjek penelitian ini adalah ahli media pembelajaran, ahli materi perpindahan panas dan mahasiswa yang akan menilai kelayakan media pembelajaran yang dikembangkan. Teknik pengumpulan data yang digunakan adalah observasi, angket/kuesioner dan dokumentasi. Hasil penelitian menunjukkan bahwa persentase kelayakan media pembelajaran yang dikembangkan menurut ahli media adalah sebesar 97,42 % dengan kriteria sangat baik. Sedangkan menurut ahli materi perpindahan panas, persentase kelayakan media pembelajaran perpindahan panas secara radiasi yang dikembangkan adalah sebesar 81,25 % dengan kriteria sangat baik. Hasil uji coba penggunaan terhadap mahasiswa mendapatkan perolehan persentase sebesar 84,11 % dengan kriteria sangat baik.The purpose of this research was conducted to develop the instructional media by radiative heat transfer with the variation of surface treatment of the test specimen and to measure the feasibility of instructional media by expert instructional media, experts of heat transfer, and students the basic heat transfer courses.The method used is the research and development with design of the research with ADDIE (Analisys, Design, Development, Implementation, and Evaluation). Materials research is the development of instructional media radiant heat transfer in the form of props and modules. The subjects were expert instructional media, heat transfer material experts and college students, which will assess the feasibility of the developed instructional media. Data collection techniques used were observation, questionnaires/questionnaire and documentation. The results of this study showed that the percentage of feasibility study media developed by media experts are of 97.42% with the criteria of very good. Meanwhile, according to experts heat transfer material, the percentage of instructional media feasibility of radiation heat transfer is equal to 81.25% developed with criteria of very good. The results of testing the use of the percentage of students getting the acquisition of 84.11% with criteria of very good criterion.Tujuan penelitian ini adalah untuk mengembangkan media pembelajaran perpindahan panas secara radiasi dengan variasi beda perlakuan permukaan spesimen uji dan untuk mengukur kelayakan media pembelajaran yang dikembangkan menurut ahli media, ahli materi perpindahan panas, dan mahasiswa mata kuliah perpindahan kalor dasar. Metode yang digunakan adalah penelitian pengembangan dengan desain penelitian ADDIE (Analisys, Design, Development, Implementation, and Evaluation). Bahan penelitian pengembangan ini adalah media pembelajaran perpindahan panas radiasi yang berupa alat peraga dan modul. Subjek penelitian ini adalah ahli media pembelajaran, ahli materi perpindahan panas dan mahasiswa yang akan menilai kelayakan media pembelajaran yang dikembangkan. Teknik pengumpulan data yang digunakan adalah observasi, angket/kuesioner dan dokumentasi. Hasil penelitian menunjukkan bahwa persentase kelayakan media pembelajaran yang dikembangkan menurut ahli media adalah sebesar 97,42 % dengan kriteria sangat baik. Sedangkan menurut ahli materi perpindahan panas, persentase kelayakan media pembelajaran perpindahan panas secara radiasi yang dikembangkan adalah sebesar 81,25 % dengan kriteria sangat baik. Hasil uji coba penggunaan terhadap mahasiswa mendapatkan perolehan persentase sebesar 84,11 % dengan kriteria sangat baik. Tujuan penelitian ini adalah untuk mengembangkan media pembelajaran perpindahan panas secara radiasi dengan variasi beda perlakuan permukaan spesimen uji dan untuk mengukur kelayakan media pembelajaran yang dikembangkan menurut ahli media, ahli materi perpindahan panas, dan mahasiswa mata kuliah perpindahan kalor dasar. Metode yang digunakan adalah penelitian pengembangan dengan desain penelitian ADDIE (Analisys, Design, Development, Implementation, and Evaluation). Bahan penelitian pengembangan ini adalah media pembelajaran perpindahan panas radiasi yang berupa alat peraga dan modul. Subjek penelitian ini adalah ahli media pembelajaran, ahli materi perpindahan panas dan mahasiswa yang akan menilai kelayakan media pembelajaran yang dikembangkan. Teknik pengumpulan data yang digunakan adalah observasi, angket/kuesioner dan dokumentasi. Hasil penelitian menunjukkan bahwa persentase kelayakan media pembelajaran yang dikembangkan menurut ahli media adalah sebesar 97,42 % dengan kriteria sangat baik. Sedangkan menurut ahli materi perpindahan panas, persentase kelayakan media pembelajaran perpindahan panas secara radiasi yang dikembangkan adalah sebesar 81,25 % dengan kriteria sangat baik. Hasil uji coba penggunaan terhadap mahasiswa mendapatkan perolehan persentase sebesar 84,11 % dengan kriteria sangat baik.
DESAIN DAN PRODUKSI MULTIMEDIA PEMBELAJARAN INTERAKTIF MATA KULIAH PNEUMATIK HIDROLIK
Journal of Mechanical Engineering Learning Vol 3 No 2 (2014): Journal of Mechanical Engineering Learning
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Tujuan penelitian ini adalah membuat desain dan produk multimedia pembelajaran interaktif mata kuliah pneumatik hidrolik serta menguji perangkat lunak berupa program multimedia pembelajaran interaktif mata kuliah pneumatik hidroulik berbentuk CD (Compact Disk). Pengumpulan data menggunakan teknik angket yang diisi oleh pakar media pembelajaran dan dosen jurusan teknik mesin mata kuliah pneumatik hidrolik dan mahasiswa jurusan teknik mesin. Hasil penelitian ini adalah terciptanya produk program pembelajaran multimedia interaktif yang dikemas dalam bentuk perangkat lunak dengan media penyimpanan berupa Compact Disk (CD) dengan tambahan fasilitas autorun dan juga file installer sesuai dengan desain yang direncanakan. Berdasarkan hasil penelitian diketahui bahwa persepsi tentang multimedia pembelajaran interaktif mata kuliah pneumatik hidrolik oleh pakar media pembelajaran, dosen dan mahasiswa, menurut pakar media pembelajaran dari segi kualitas teknis adalah 86,67% dengan kriteria sangat baik, dari segi tampilan 82,33% dengan kriteria sangat baik. Menurut dosen dari segi pendidikan 93,33% dengan kriteria sangat baik. Sedangkan menurut mahasiswa 85,1% dengan kriteria sangat baik. Multimedia Pembelajaran Interaktif mata kuliah Pneumatik Hidrolik ini layak dan dapat digunakan sebagai media pembelajaran tambahan dengan tujuan mahasiswa akan lebih memahami materi dengan belajar sendiri dengan asumsi bahwa mahasiswa mempunyai komputer atau laptop.The purpose of this research is to make the product design and multimedia interactive learning courses hydraulic and pneumatic test the software in the form of multimedia interactive learning program courses hidroulik pneumatic shaped CD (Compact Disk). Collecting data using a questionnaire completed by the technical expert and professor of instructional media department of mechanical engineering subjects hydraulic pneumatic and mechanical engineering majors. The results of this research is the creation of interactive multimedia learning program products are packaged in the form of software with storage media such as Compact Disk (CD) with additional facilities autorun and installer files according to the planned design. Based on the survey results revealed that perceptions of multimedia interactive learning course by a hydraulic pneumatic instructional media specialists, faculty and students, according to media expert learning in terms of technical quality is 86.67% with criteria very well, from 82.33% in terms of appearance with the criteria very well. According to the lecturer in terms of education 93.33% with criteria very well. While 85.1% of students according to the criteria very well. Multimedia Interactive Learning courses Hydraulic Pneumatic is feasible and can be used as a supplementary learning media with the aim of better understanding the student will learn the material by himself with the assumption that students have a computer or laptop. 
PENERAPAN METODE PEMBELAJARAN DRILL UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK PADA STANDAR KOMPETENSI MENGUKUR DENGAN MENGGUNAKAN ALAT UKUR
Journal of Mechanical Engineering Learning Vol 3 No 2 (2014): Journal of Mechanical Engineering Learning
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Penelitian ini bertujuan untuk mengetahui hasil belajar standar kompetensi mengukur dengan menggunakan alat ukur yang menggunakan metode pembelajaran demonstrasi dan yang menggunakan metode pembelajaran drill. Penelitian ini merupakan penelitian eksperimen dengan desain Pre test-Post test Control Group Design, menggunakan Tes pilihan ganda sebagai alat pengumpul data penelitian. Populasi penelitian adalah siswa kelas X Teknik Pemesinan SMK Negeri 1 Kota Semarang terdiri dari 108 siswa dan diambil 72 siswa sebagai sampel. Hasil analisis data diperoleh rata-rata post-test kelas eksperimen adalah 81,70 dan rata-rata kelas kontrol adalah 72,70. Kedua kelas berdistribusi normal dan mempunyai dua varians yang sama. Pada uji perbedaan dua rata-rata diperoleh thitung= 4,66. Untuk α = 5% dan dk = (36+36-2) = 70 diperoleh t(0,95)(70) = 1,99, karena thitung ≥ t (0,95)(70) maka H0 ditolak, hal ini berarti ada perbedaan hasil belajar secara signifikan antara kelompok eksperimen dan kelompok kontrol atau dengan kata lain hasil belajar kelas eksperimen lebih baik daripada kelas kontrol.This research aims to find out the results of an standart competence measure with measuring tools learning courses that use demonstrasi learning method and use the drill learning method . This study is an experimental research design with pre-test post test control group design, use the multiple chois test as a tool for collecting research data. The population of the research was a student at mechanical engineering SMK N 1 Semarang city consists of 108 students and taken 72 students as a sample. The research results obtained average post-test test class is 81,70 and the average of the control class is 72,70 . In the hypothesis test is obtained tarithmetic = 4,66 (α = 5%) and dk = (36+36-2) = 70 obtained t(0,95)(70) = 1,99. Because tarithmetic ≥ t (0,95)(70) then H0 rejected. 

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