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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 14 Documents
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Search results for , issue "Vol 2 No 2 (2013): Journal of Mechanical Engineering Learning" : 14 Documents clear
PENGGUNAAN BAHAN AJAR CD INTERAKTIF UNTUK MENINGKATKAN HASIL BELAJAR KOMPETENSI MENGGAMBAR 2 DIMENSI DENGAN PROGRAM AUT O CAD
Journal of Mechanical Engineering Learning Vol 2 No 2 (2013): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui peningkatan hasil belajar kompetensi menggambar 2 dimensi dengan program  AutoCAD yang menggunakan bahan ajar CD interaktif  dibandingkan dengan yang tidak menggunakan bahan ajar CD interaktif. Penelitian ini menggunakan jenis penelitian eksperimental-sungguhan (True Experimental Design) dengan rancangan penelitian  randomized control-group pretest-posttest design. Populasi penelitian ini berjumlah 105 siswa kelas XI Jurusan Permesinan SMKN 1 Magelang. Pengambilan sampel dilakukan secara acak diperoleh kelompok eksperimen kelas XI Mesin A sebanyak 27 siswa dan kelompok kontrol kelas XI Mesin B sebanyak 26 siswa. Data dikumpulkan dengan metode tes dan data dianalisis secara kuantitatif. Hasil uji-t diperoleh bahwa terjadi peningkatan hasil belajar kompetensi menggambar 2 dimensi dengan program autocad yang menggunakan bahan ajar CD interaktif  dibandingkan yang menggunakan modul.AbstractThis research aims to determine the improvement of  learning outcomes competency 2dimensions drawing with AutoCAD program that uses an interactive CD instructional materials compared with those not using an interactive CD teaching materials. This research uses experimental research-real (True Experimental Design) with the study design randomized control-group pretest-posttest design. The study population consists of  105 students of  class XI SMK 1 Magelang Machining Department. Sampling was done randomly obtained experimental group class XI Engines A total of  27 students of  class XI and machine control group B were 26 students. Data collected with the test method and the data were analyzed quantitatively. T-test results means that an increase in competency learning outcomes 2 dimensional drawing with AutoCAD program that uses an interactive CD teaching materials than using modules.
PERANGKAT PENGUKUR TINGKAT KEPUASAN MAHASISWA TERHADAP PROSES PEMBELAJRAN DI JURUSAN TEKNIK MESIN UNIVERSITAS NEGERI SEMARANG
Journal of Mechanical Engineering Learning Vol 2 No 2 (2013): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Abstract

AbstrakEvaluasi proses pembelajaran merupakan komponen penting dalam mengukur kualitas pembelajaran. Sistem evaluasi pembelajaran dilakukan dengan mengukur tingkat kepuasan mahasiswa terhadap sistem pembelajaran yang telah diterima.Penelitian ini bertujuan untuk menguji perangkat pengkur tingkat kepuasan mahasiswa terhadap proses pembelajaran yang dikemas dalam bentuk aplikasi berbasis web. Penelitian ini menggunakan metode penelitian dan pengembangan pendidikan (Educational Research and Development) dengan model 4D (define, design, develop, dan disseminate). Perangkat telah divalidasi oleh dua orang ahli dengan hasil penilaian 83,33 % yang berarti sangat baik. Uji coba lapangan terhadap 20 mahasiswa Jurusan Teknik Mesin Universitas Negeri Semarang didapatkan hasil bahwa perangkat baik dengan presentase 79,5%. Hasil penelitian tersebut menunjukkan bahwa perangkat pengukur tingkat kepuasan mahasiswa terhadap proses pembelajaran yang berbasis web layak digunakan. Berdasarkan hasil penelitian diharapkan perangkat pengukur tingkat kepuasan mahasiswa terhadap proses pembelajaran yang berbasis web dapat mempermudah Jurusan Teknik Mesin Universitas Negeri Semarang dalam melakukan evalusai system pembelajaran.AbstractLearning evaluation system is an important component in measuring the quality of  learning process. The learning evaluation system is done by measuring the students’ satisfaction level of  learning system that has been received. This research’s purpose are to examine the software of  students’ satisfaction level of  learning process which is packed in web. This research used Educational Research and Development method which was done by 4D model (define, design, develop, and disseminate). The software had been validated by two experts with assessment results 83.33%, which was meant the software was very good. The field trials had been done with 20 students of  Mechanical Engineering Major of  Engineering Faculty in Semarang State University. The result of  the field trials showed that the software percentage was 79.5% or good. The results of  the research showed that the software of  students’ satisfaction measurement of  learning process is worth using.Based on the results, the researcher expect that the software of  students’ satisfaction level of  learning process can facilitate the Mechanical Engineering Major of  Engineering Faculty in Semarang State University in conducting learning system evaluation
ANALISIS PANAS PADA KNALPOT BERBASIS SPONGE STEEL
Journal of Mechanical Engineering Learning Vol 2 No 2 (2013): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui panas sponge steel, panas gas buang, dan panasbody knalpot berbasis sponge steel. Metode penelitiannya adalah dekripstif. Membaranyasponge steel ini mencapai rata-rata panas 545 oC pada putaran 7000 rpm, panas tersebutnaik mencapai 118% dari panas dalam knalpot standart yang hanya mencapai 250 oC. Penurunanpanasgasbuang inimencapai25.8% padaputaran 7000rpmkarenaterjadipenurunantekanangasbuang setelah melewatiruangmixerknalpot berbasisspongesteel. Panasbodyknalpotberbasisspongesteel yangdilapisi asbesmencapai49.3 oCpada putaran 7000 rpmsedangkanknalpotstandartmencapaipanas 114oCsehingga penurunantemperaturpanasknalpotberbasisspongesteel sebesar56.7%.Simpulan penelitianinipanasknalpotberbasisspongesteel meningkatdrastisdariknalpot standart,tetapigasbuang yangdihasilkan menurunkarenaterdapat ruangmixerdi dalamknalpot untukmensearahkanpartikelpanasyangbergerakacak sehingga tekanan menurun.AbstractHeat Analysis Based On Sponge Steel Exhaust. This study aims to determine the heat spongesteel, hot flue gas, and heat-based sponge stainless muff ler body. The research method is dekripstif.Thissteel spongeiscandescent averaged545 oCheatat 7000rpmrotation,theheatroseto118%of the heat in the exhaust standard, which only reached 250 oC. This decrease in exhaustgasheat to reach25.8%at7000 rpmrotationdue to a decreaseinpressureof the exhaustgas after passing through a sponge-based steel exhaust mixer. Hot body exhaust sponge-basedasbestos-coated steel reached 49.3 °C at 7000 rpm rotation while the standard exhaust heatreaches 114 °C so that the hot exhaust temperature reduction based steel sponge was 56.7%.The conclusions of  this study based sponge stainless exhaust heat from the exhaust standardincreased dramatically, but the resulting f lue gas decreases because there is space in the exhaustmixer for saming direction hot particles that move randomly so the pressure decreases.
RANCANG BANGUN BOILER PADA INDUSTRI TAHU UNTUK PROSES PEMANASAN SISTEM UAP DENGAN MENGGUNAKAN CATIA V5
Journal of Mechanical Engineering Learning Vol 2 No 2 (2013): Journal of Mechanical Engineering Learning
Publisher : Journal of Mechanical Engineering Learning

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Abstract

AbstrakPenelitian ini bertujuan untuk: 1) merancang kontruksi boiler jenis Vertical fire tube boiler menghasilkan uap jenuh pada temperatur 100 0C – 150 0C, 2) merancang boiler menggunakan standar perancangan ASME (American Society of Mechanical Engineers), 3) mengetahui desain dan analisis statis boiler menggunakan CATIA V5. Metode penelitian menggunakan Research and Development dengan bantuan perangkat lunak (software). Hasil penelitian didapatkan spesifikasi boiler tekanan uap operasi 2 bar dan tekanan internal perancangan 6 bar. Dimensi boiler yaitu diameter 757 mm, tinggi 2200 mm dan didalamnya terdapat pipa api dengan diameter 68 mm berjumlah 21 buah. Bahan bakar menggunakan kayu bakar. Volume air maksimal yang dapat di isikan dalam boiler hingga 327 liter. Material yang digunakan plat carbon steel SA 285 Grade C dan pipa seamless carbon steel SA 53 Grade B. Analisis statis boiler diperoleh tegangan maksimal 2,92 x 108 N/m2, displacement maksimal yang terjadi pada kontruksi boiler adalah 1,47 mm. Kontruksi boiler memiliki angka keamanan 1,42.The objective of this research are: 1) to design contruction of boiler tipe Vertical Fire Tube boiler to result 100 0C – 150 0C saturated steam temperature, 2) to design boiler with ASME (American Society of Mechanical Engineers) of plan standart, 3) to determine the design and static analysis boiler with CATIA V5. The method used in this research is Research and Development with software. These results get boiler specification 2 bar of operation steam presure and 6 bar of internal design presure. Boiler dimention are 757 mm of diameter, 2200 mm of high and on inside are 68 mm diameters of 21 fire tube. The fuel is wood. Maximal water volume to be used in boiler up to 327 liter. The material used are carbon steel SA 285 Grade C and pipe seamless carbon steel SA 53 Grade B. Analysis static of boiler to result 2,92 x 108 N/m2 of maximal strees, maximum displacement on the boiler contruction is 1,47 mm. Boiler contruction have 1,42 of safety value.

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